6873fc8026
Upgraded to Rails 2.0.2, except that we maintain vendor/rails/actionpack/lib/action_controller/routing.rb from Rail 1.2.6 (at least for now), so that Routes don't change. We still get to enjoy Rails's many new features. Also fixed a bug in Chunk-handling: disable WikiWord processing in tags (for real this time).
690 lines
32 KiB
Ruby
690 lines
32 KiB
Ruby
require 'cgi'
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require 'action_view/helpers/date_helper'
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require 'action_view/helpers/tag_helper'
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module ActionView
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module Helpers
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# Form helpers are designed to make working with models much easier compared to using just standard HTML
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# elements by providing a set of methods for creating forms based on your models. This helper generates the HTML
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# for forms, providing a method for each sort of input (e.g., text, password, select, and so on). When the form
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# is submitted (i.e., when the user hits the submit button or <tt>form.submit</tt> is called via JavaScript), the form inputs will be bundled into the <tt>params</tt> object and passed back to the controller.
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#
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# There are two types of form helpers: those that specifically work with model attributes and those that don't.
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# This helper deals with those that work with model attributes; to see an example of form helpers that don't work
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# with model attributes, check the ActionView::Helpers::FormTagHelper documentation.
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#
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# The core method of this helper, form_for, gives you the ability to create a form for a model instance;
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# for example, let's say that you have a model <tt>Person</tt> and want to create a new instance of it:
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#
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# # Note: a @person variable will have been created in the controller.
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# # For example: @person = Person.new
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# <% form_for :person, @person, :url => { :action => "create" } do |f| %>
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# <%= f.text_field :first_name %>
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# <%= f.text_field :last_name %>
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# <%= submit_tag 'Create' %>
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# <% end %>
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#
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# The HTML generated for this would be:
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#
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# <form action="/persons/create" method="post">
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# <input id="person_first_name" name="person[first_name]" size="30" type="text" />
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# <input id="person_last_name" name="person[last_name]" size="30" type="text" />
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# <input name="commit" type="submit" value="Create" />
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# </form>
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#
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# The <tt>params</tt> object created when this form is submitted would look like:
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#
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# {"action"=>"create", "controller"=>"persons", "person"=>{"first_name"=>"William", "last_name"=>"Smith"}}
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#
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# The params hash has a nested <tt>person</tt> value, which can therefore be accessed with <tt>params[:person]</tt> in the controller.
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# If were editing/updating an instance (e.g., <tt>Person.find(1)</tt> rather than <tt>Person.new</tt> in the controller), the objects
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# attribute values are filled into the form (e.g., the <tt>person_first_name</tt> field would have that person's first name in it).
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#
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# If the object name contains square brackets the id for the object will be inserted. For example:
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#
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# <%= text_field "person[]", "name" %>
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#
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# ...will generate the following ERb.
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#
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# <input type="text" id="person_<%= @person.id %>_name" name="person[<%= @person.id %>][name]" value="<%= @person.name %>" />
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#
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# If the helper is being used to generate a repetitive sequence of similar form elements, for example in a partial
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# used by <tt>render_collection_of_partials</tt>, the <tt>index</tt> option may come in handy. Example:
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#
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# <%= text_field "person", "name", "index" => 1 %>
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#
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# ...becomes...
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#
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# <input type="text" id="person_1_name" name="person[1][name]" value="<%= @person.name %>" />
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#
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# There are also methods for helping to build form tags in link:classes/ActionView/Helpers/FormOptionsHelper.html,
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# link:classes/ActionView/Helpers/DateHelper.html, and link:classes/ActionView/Helpers/ActiveRecordHelper.html
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module FormHelper
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# Creates a form and a scope around a specific model object that is used as a base for questioning about
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# values for the fields.
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#
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# <% form_for :person, @person, :url => { :action => "update" } do |f| %>
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# First name: <%= f.text_field :first_name %>
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# Last name : <%= f.text_field :last_name %>
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# Biography : <%= f.text_area :biography %>
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# Admin? : <%= f.check_box :admin %>
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# <% end %>
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#
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# Worth noting is that the form_for tag is called in a ERb evaluation block, not an ERb output block. So that's <tt><% %></tt>,
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# not <tt><%= %></tt>. Also worth noting is that form_for yields a <tt>form_builder</tt> object, in this example as <tt>f</tt>, which emulates
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# the API for the stand-alone FormHelper methods, but without the object name. So instead of <tt>text_field :person, :name</tt>,
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# you get away with <tt>f.text_field :name</tt>.
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#
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# Even further, the form_for method allows you to more easily escape the instance variable convention. So while the stand-alone
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# approach would require <tt>text_field :person, :name, :object => person</tt>
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# to work with local variables instead of instance ones, the form_for calls remain the same. You simply declare once with
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# <tt>:person, person</tt> and all subsequent field calls save <tt>:person</tt> and <tt>:object => person</tt>.
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#
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# Also note that form_for doesn't create an exclusive scope. It's still possible to use both the stand-alone FormHelper methods
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# and methods from FormTagHelper. For example:
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#
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# <% form_for :person, @person, :url => { :action => "update" } do |f| %>
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# First name: <%= f.text_field :first_name %>
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# Last name : <%= f.text_field :last_name %>
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# Biography : <%= text_area :person, :biography %>
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# Admin? : <%= check_box_tag "person[admin]", @person.company.admin? %>
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# <% end %>
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#
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# Note: This also works for the methods in FormOptionHelper and DateHelper that are designed to work with an object as base,
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# like FormOptionHelper#collection_select and DateHelper#datetime_select.
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#
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# HTML attributes for the form tag can be given as :html => {...}. For example:
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#
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# <% form_for :person, @person, :html => {:id => 'person_form'} do |f| %>
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# ...
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# <% end %>
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#
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# The above form will then have the <tt>id</tt> attribute with the value </tt>person_form</tt>, which you can then
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# style with CSS or manipulate with JavaScript.
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#
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# === Relying on record identification
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#
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# In addition to manually configuring the form_for call, you can also rely on record identification, which will use
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# the conventions and named routes of that approach. Examples:
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#
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# <% form_for(@post) do |f| %>
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# ...
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# <% end %>
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#
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# This will expand to be the same as:
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#
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# <% form_for :post, @post, :url => post_path(@post), :html => { :method => :put, :class => "edit_post", :id => "edit_post_45" } do |f| %>
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# ...
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# <% end %>
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#
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# And for new records:
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#
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# <% form_for(Post.new) do |f| %>
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# ...
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# <% end %>
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#
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# This will expand to be the same as:
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#
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# <% form_for :post, @post, :url => posts_path, :html => { :class => "new_post", :id => "new_post" } do |f| %>
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# ...
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# <% end %>
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#
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# You can also overwrite the individual conventions, like this:
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#
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# <% form_for(@post, :url => super_post_path(@post)) do |f| %>
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# ...
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# <% end %>
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#
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# And for namespaced routes, like admin_post_url:
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#
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# <% form_for([:admin, @post]) do |f| %>
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# ...
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# <% end %>
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#
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# === Customized form builders
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#
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# You can also build forms using a customized FormBuilder class. Subclass FormBuilder and override or define some more helpers,
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# then use your custom builder. For example, let's say you made a helper to automatically add labels to form inputs.
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#
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# <% form_for :person, @person, :url => { :action => "update" }, :builder => LabellingFormBuilder do |f| %>
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# <%= f.text_field :first_name %>
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# <%= f.text_field :last_name %>
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# <%= text_area :person, :biography %>
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# <%= check_box_tag "person[admin]", @person.company.admin? %>
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# <% end %>
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#
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# In many cases you will want to wrap the above in another helper, so you could do something like the following:
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#
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# def labelled_form_for(name, object, options, &proc)
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# form_for(name, object, options.merge(:builder => LabellingFormBuiler), &proc)
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# end
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#
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# If you don't need to attach a form to a model instance, then check out FormTagHelper#form_tag.
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def form_for(record_or_name_or_array, *args, &proc)
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raise ArgumentError, "Missing block" unless block_given?
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options = args.extract_options!
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case record_or_name_or_array
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when String, Symbol
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object_name = record_or_name_or_array
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when Array
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object = record_or_name_or_array.last
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object_name = ActionController::RecordIdentifier.singular_class_name(object)
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apply_form_for_options!(record_or_name_or_array, options)
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args.unshift object
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else
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object = record_or_name_or_array
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object_name = ActionController::RecordIdentifier.singular_class_name(object)
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apply_form_for_options!([object], options)
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args.unshift object
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end
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concat(form_tag(options.delete(:url) || {}, options.delete(:html) || {}), proc.binding)
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fields_for(object_name, *(args << options), &proc)
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concat('</form>', proc.binding)
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end
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def apply_form_for_options!(object_or_array, options) #:nodoc:
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object = object_or_array.is_a?(Array) ? object_or_array.last : object_or_array
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html_options =
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if object.respond_to?(:new_record?) && object.new_record?
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{ :class => dom_class(object, :new), :id => dom_id(object), :method => :post }
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else
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{ :class => dom_class(object, :edit), :id => dom_id(object, :edit), :method => :put }
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end
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options[:html] ||= {}
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options[:html].reverse_merge!(html_options)
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options[:url] ||= polymorphic_path(object_or_array)
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end
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# Creates a scope around a specific model object like form_for, but doesn't create the form tags themselves. This makes
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# fields_for suitable for specifying additional model objects in the same form:
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#
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# ==== Examples
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# <% form_for @person, :url => { :action => "update" } do |person_form| %>
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# First name: <%= person_form.text_field :first_name %>
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# Last name : <%= person_form.text_field :last_name %>
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#
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# <% fields_for @person.permission do |permission_fields| %>
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# Admin? : <%= permission_fields.check_box :admin %>
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# <% end %>
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# <% end %>
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#
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# ...or if you have an object that needs to be represented as a different parameter, like a Client that acts as a Person:
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#
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# <% fields_for :person, @client do |permission_fields| %>
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# Admin?: <%= permission_fields.check_box :admin %>
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# <% end %>
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#
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# ...or if you don't have an object, just a name of the parameter
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#
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# <% fields_for :person do |permission_fields| %>
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# Admin?: <%= permission_fields.check_box :admin %>
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# <% end %>
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#
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# Note: This also works for the methods in FormOptionHelper and DateHelper that are designed to work with an object as base,
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# like FormOptionHelper#collection_select and DateHelper#datetime_select.
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def fields_for(record_or_name_or_array, *args, &block)
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raise ArgumentError, "Missing block" unless block_given?
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options = args.extract_options!
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case record_or_name_or_array
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when String, Symbol
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object_name = record_or_name_or_array
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object = args.first
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when Array
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object = record_or_name_or_array.last
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object_name = ActionController::RecordIdentifier.singular_class_name(object)
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apply_form_for_options!(record_or_name_or_array, options)
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else
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object = record_or_name_or_array
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object_name = ActionController::RecordIdentifier.singular_class_name(object)
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end
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builder = options[:builder] || ActionView::Base.default_form_builder
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yield builder.new(object_name, object, self, options, block)
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end
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# Returns a label tag tailored for labelling an input field for a specified attribute (identified by +method+) on an object
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# assigned to the template (identified by +object+). The text of label will default to the attribute name unless you specify
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# it explicitly. Additional options on the label tag can be passed as a hash with +options+. These options will be tagged
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# onto the HTML as an HTML element attribute as in the example shown.
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#
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# ==== Examples
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# label(:post, :title)
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# #=> <label for="post_title">Title</label>
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#
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# label(:post, :title, "A short title")
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# #=> <label for="post_title">A short title</label>
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#
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# label(:post, :title, "A short title", :class => "title_label")
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# #=> <label for="post_title" class="title_label">A short title</label>
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#
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def label(object_name, method, text = nil, options = {})
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InstanceTag.new(object_name, method, self, nil, options.delete(:object)).to_label_tag(text, options)
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end
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# Returns an input tag of the "text" type tailored for accessing a specified attribute (identified by +method+) on an object
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# assigned to the template (identified by +object+). Additional options on the input tag can be passed as a
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# hash with +options+. These options will be tagged onto the HTML as an HTML element attribute as in the example
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# shown.
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#
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# ==== Examples
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# text_field(:post, :title, :size => 20)
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# # => <input type="text" id="post_title" name="post[title]" size="20" value="#{@post.title}" />
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#
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# text_field(:post, :title, :class => "create_input")
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# # => <input type="text" id="post_title" name="post[title]" value="#{@post.title}" class="create_input" />
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#
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# text_field(:session, :user, :onchange => "if $('session[user]').value == 'admin' { alert('Your login can not be admin!'); }")
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# # => <input type="text" id="session_user" name="session[user]" value="#{@session.user}" onchange = "if $('session[user]').value == 'admin' { alert('Your login can not be admin!'); }"/>
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#
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# text_field(:snippet, :code, :size => 20, :class => 'code_input')
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# # => <input type="text" id="snippet_code" name="snippet[code]" size="20" value="#{@snippet.code}" class="code_input" />
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#
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def text_field(object_name, method, options = {})
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InstanceTag.new(object_name, method, self, nil, options.delete(:object)).to_input_field_tag("text", options)
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end
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# Returns an input tag of the "password" type tailored for accessing a specified attribute (identified by +method+) on an object
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# assigned to the template (identified by +object+). Additional options on the input tag can be passed as a
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# hash with +options+. These options will be tagged onto the HTML as an HTML element attribute as in the example
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# shown.
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#
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# ==== Examples
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# password_field(:login, :pass, :size => 20)
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# # => <input type="text" id="login_pass" name="login[pass]" size="20" value="#{@login.pass}" />
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#
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# password_field(:account, :secret, :class => "form_input")
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# # => <input type="text" id="account_secret" name="account[secret]" value="#{@account.secret}" class="form_input" />
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#
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# password_field(:user, :password, :onchange => "if $('user[password]').length > 30 { alert('Your password needs to be shorter!'); }")
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# # => <input type="text" id="user_password" name="user[password]" value="#{@user.password}" onchange = "if $('user[password]').length > 30 { alert('Your password needs to be shorter!'); }"/>
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#
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# password_field(:account, :pin, :size => 20, :class => 'form_input')
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# # => <input type="text" id="account_pin" name="account[pin]" size="20" value="#{@account.pin}" class="form_input" />
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#
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def password_field(object_name, method, options = {})
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InstanceTag.new(object_name, method, self, nil, options.delete(:object)).to_input_field_tag("password", options)
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end
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# Returns a hidden input tag tailored for accessing a specified attribute (identified by +method+) on an object
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# assigned to the template (identified by +object+). Additional options on the input tag can be passed as a
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# hash with +options+. These options will be tagged onto the HTML as an HTML element attribute as in the example
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# shown.
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#
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# ==== Examples
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# hidden_field(:signup, :pass_confirm)
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# # => <input type="hidden" id="signup_pass_confirm" name="signup[pass_confirm]" value="#{@signup.pass_confirm}" />
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#
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# hidden_field(:post, :tag_list)
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# # => <input type="hidden" id="post_tag_list" name="post[tag_list]" value="#{@post.tag_list}" />
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#
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# hidden_field(:user, :token)
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# # => <input type="hidden" id="user_token" name="user[token]" value="#{@user.token}" />
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def hidden_field(object_name, method, options = {})
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InstanceTag.new(object_name, method, self, nil, options.delete(:object)).to_input_field_tag("hidden", options)
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end
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# Returns an file upload input tag tailored for accessing a specified attribute (identified by +method+) on an object
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# assigned to the template (identified by +object+). Additional options on the input tag can be passed as a
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# hash with +options+. These options will be tagged onto the HTML as an HTML element attribute as in the example
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# shown.
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#
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# ==== Examples
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# file_field(:user, :avatar)
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# # => <input type="file" id="user_avatar" name="user[avatar]" />
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#
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# file_field(:post, :attached, :accept => 'text/html')
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# # => <input type="file" id="post_attached" name="post[attached]" />
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#
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# file_field(:attachment, :file, :class => 'file_input')
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# # => <input type="file" id="attachment_file" name="attachment[file]" class="file_input" />
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#
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def file_field(object_name, method, options = {})
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InstanceTag.new(object_name, method, self, nil, options.delete(:object)).to_input_field_tag("file", options)
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end
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# Returns a textarea opening and closing tag set tailored for accessing a specified attribute (identified by +method+)
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# on an object assigned to the template (identified by +object+). Additional options on the input tag can be passed as a
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# hash with +options+.
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#
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# ==== Examples
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# text_area(:post, :body, :cols => 20, :rows => 40)
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# # => <textarea cols="20" rows="40" id="post_body" name="post[body]">
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# # #{@post.body}
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# # </textarea>
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#
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# text_area(:comment, :text, :size => "20x30")
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# # => <textarea cols="20" rows="30" id="comment_text" name="comment[text]">
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# # #{@comment.text}
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# # </textarea>
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#
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# text_area(:application, :notes, :cols => 40, :rows => 15, :class => 'app_input')
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# # => <textarea cols="40" rows="15" id="application_notes" name="application[notes]" class="app_input">
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# # #{@application.notes}
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# # </textarea>
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#
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# text_area(:entry, :body, :size => "20x20", :disabled => 'disabled')
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# # => <textarea cols="20" rows="20" id="entry_body" name="entry[body]" disabled="disabled">
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# # #{@entry.body}
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# # </textarea>
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def text_area(object_name, method, options = {})
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InstanceTag.new(object_name, method, self, nil, options.delete(:object)).to_text_area_tag(options)
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end
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# Returns a checkbox tag tailored for accessing a specified attribute (identified by +method+) on an object
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# assigned to the template (identified by +object+). It's intended that +method+ returns an integer and if that
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# integer is above zero, then the checkbox is checked. Additional options on the input tag can be passed as a
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# hash with +options+. The +checked_value+ defaults to 1 while the default +unchecked_value+
|
|
# is set to 0 which is convenient for boolean values. Since HTTP standards say that unchecked checkboxes don't post anything,
|
|
# we add a hidden value with the same name as the checkbox as a work around.
|
|
#
|
|
# ==== Examples
|
|
# # Let's say that @post.validated? is 1:
|
|
# check_box("post", "validated")
|
|
# # => <input type="checkbox" id="post_validate" name="post[validated]" value="1" checked="checked" />
|
|
# # <input name="post[validated]" type="hidden" value="0" />
|
|
#
|
|
# # Let's say that @puppy.gooddog is "no":
|
|
# check_box("puppy", "gooddog", {}, "yes", "no")
|
|
# # => <input type="checkbox" id="puppy_gooddog" name="puppy[gooddog]" value="yes" />
|
|
# # <input name="puppy[gooddog]" type="hidden" value="no" />
|
|
#
|
|
# check_box("eula", "accepted", {}, "yes", "no", :class => 'eula_check')
|
|
# # => <input type="checkbox" id="eula_accepted" name="eula[accepted]" value="no" />
|
|
# # <input name="eula[accepted]" type="hidden" value="no" />
|
|
#
|
|
def check_box(object_name, method, options = {}, checked_value = "1", unchecked_value = "0")
|
|
InstanceTag.new(object_name, method, self, nil, options.delete(:object)).to_check_box_tag(options, checked_value, unchecked_value)
|
|
end
|
|
|
|
# Returns a radio button tag for accessing a specified attribute (identified by +method+) on an object
|
|
# assigned to the template (identified by +object+). If the current value of +method+ is +tag_value+ the
|
|
# radio button will be checked. Additional options on the input tag can be passed as a
|
|
# hash with +options+.
|
|
#
|
|
# ==== Examples
|
|
# # Let's say that @post.category returns "rails":
|
|
# radio_button("post", "category", "rails")
|
|
# radio_button("post", "category", "java")
|
|
# # => <input type="radio" id="post_category" name="post[category]" value="rails" checked="checked" />
|
|
# # <input type="radio" id="post_category" name="post[category]" value="java" />
|
|
#
|
|
# radio_button("user", "receive_newsletter", "yes")
|
|
# radio_button("user", "receive_newsletter", "no")
|
|
# # => <input type="radio" id="user_receive_newsletter" name="user[receive_newsletter]" value="yes" />
|
|
# # <input type="radio" id="user_receive_newsletter" name="user[receive_newsletter]" value="no" checked="checked" />
|
|
def radio_button(object_name, method, tag_value, options = {})
|
|
InstanceTag.new(object_name, method, self, nil, options.delete(:object)).to_radio_button_tag(tag_value, options)
|
|
end
|
|
end
|
|
|
|
class InstanceTag #:nodoc:
|
|
include Helpers::TagHelper
|
|
|
|
attr_reader :method_name, :object_name
|
|
|
|
DEFAULT_FIELD_OPTIONS = { "size" => 30 }.freeze unless const_defined?(:DEFAULT_FIELD_OPTIONS)
|
|
DEFAULT_RADIO_OPTIONS = { }.freeze unless const_defined?(:DEFAULT_RADIO_OPTIONS)
|
|
DEFAULT_TEXT_AREA_OPTIONS = { "cols" => 40, "rows" => 20 }.freeze unless const_defined?(:DEFAULT_TEXT_AREA_OPTIONS)
|
|
DEFAULT_DATE_OPTIONS = { :discard_type => true }.freeze unless const_defined?(:DEFAULT_DATE_OPTIONS)
|
|
|
|
def initialize(object_name, method_name, template_object, local_binding = nil, object = nil)
|
|
@object_name, @method_name = object_name.to_s.dup, method_name.to_s.dup
|
|
@template_object, @local_binding = template_object, local_binding
|
|
@object = object
|
|
if @object_name.sub!(/\[\]$/,"")
|
|
if object ||= @template_object.instance_variable_get("@#{Regexp.last_match.pre_match}") and object.respond_to?(:to_param)
|
|
@auto_index = object.to_param
|
|
else
|
|
raise ArgumentError, "object[] naming but object param and @object var don't exist or don't respond to to_param: #{object.inspect}"
|
|
end
|
|
end
|
|
end
|
|
|
|
def to_label_tag(text = nil, options = {})
|
|
name_and_id = options.dup
|
|
add_default_name_and_id(name_and_id)
|
|
options["for"] = name_and_id["id"]
|
|
content = (text.blank? ? nil : text.to_s) || method_name.humanize
|
|
content_tag("label", content, options)
|
|
end
|
|
|
|
def to_input_field_tag(field_type, options = {})
|
|
options = options.stringify_keys
|
|
options["size"] = options["maxlength"] || DEFAULT_FIELD_OPTIONS["size"] unless options.key?("size")
|
|
options = DEFAULT_FIELD_OPTIONS.merge(options)
|
|
if field_type == "hidden"
|
|
options.delete("size")
|
|
end
|
|
options["type"] = field_type
|
|
options["value"] ||= value_before_type_cast(object) unless field_type == "file"
|
|
add_default_name_and_id(options)
|
|
tag("input", options)
|
|
end
|
|
|
|
def to_radio_button_tag(tag_value, options = {})
|
|
options = DEFAULT_RADIO_OPTIONS.merge(options.stringify_keys)
|
|
options["type"] = "radio"
|
|
options["value"] = tag_value
|
|
if options.has_key?("checked")
|
|
cv = options.delete "checked"
|
|
checked = cv == true || cv == "checked"
|
|
else
|
|
checked = self.class.radio_button_checked?(value(object), tag_value)
|
|
end
|
|
options["checked"] = "checked" if checked
|
|
pretty_tag_value = tag_value.to_s.gsub(/\s/, "_").gsub(/\W/, "").downcase
|
|
options["id"] ||= defined?(@auto_index) ?
|
|
"#{@object_name}_#{@auto_index}_#{@method_name}_#{pretty_tag_value}" :
|
|
"#{@object_name}_#{@method_name}_#{pretty_tag_value}"
|
|
add_default_name_and_id(options)
|
|
tag("input", options)
|
|
end
|
|
|
|
def to_text_area_tag(options = {})
|
|
options = DEFAULT_TEXT_AREA_OPTIONS.merge(options.stringify_keys)
|
|
add_default_name_and_id(options)
|
|
|
|
if size = options.delete("size")
|
|
options["cols"], options["rows"] = size.split("x") if size.respond_to?(:split)
|
|
end
|
|
|
|
content_tag("textarea", html_escape(options.delete('value') || value_before_type_cast(object)), options)
|
|
end
|
|
|
|
def to_check_box_tag(options = {}, checked_value = "1", unchecked_value = "0")
|
|
options = options.stringify_keys
|
|
options["type"] = "checkbox"
|
|
options["value"] = checked_value
|
|
if options.has_key?("checked")
|
|
cv = options.delete "checked"
|
|
checked = cv == true || cv == "checked"
|
|
else
|
|
checked = self.class.check_box_checked?(value(object), checked_value)
|
|
end
|
|
options["checked"] = "checked" if checked
|
|
add_default_name_and_id(options)
|
|
tag("input", options) << tag("input", "name" => options["name"], "type" => "hidden", "value" => options['disabled'] && checked ? checked_value : unchecked_value)
|
|
end
|
|
|
|
def to_date_tag()
|
|
defaults = DEFAULT_DATE_OPTIONS.dup
|
|
date = value(object) || Date.today
|
|
options = Proc.new { |position| defaults.merge(:prefix => "#{@object_name}[#{@method_name}(#{position}i)]") }
|
|
html_day_select(date, options.call(3)) +
|
|
html_month_select(date, options.call(2)) +
|
|
html_year_select(date, options.call(1))
|
|
end
|
|
|
|
def to_boolean_select_tag(options = {})
|
|
options = options.stringify_keys
|
|
add_default_name_and_id(options)
|
|
value = value(object)
|
|
tag_text = "<select"
|
|
tag_text << tag_options(options)
|
|
tag_text << "><option value=\"false\""
|
|
tag_text << " selected" if value == false
|
|
tag_text << ">False</option><option value=\"true\""
|
|
tag_text << " selected" if value
|
|
tag_text << ">True</option></select>"
|
|
end
|
|
|
|
def to_content_tag(tag_name, options = {})
|
|
content_tag(tag_name, value(object), options)
|
|
end
|
|
|
|
def object
|
|
@object || (@template_object.instance_variable_get("@#{@object_name}") rescue nil)
|
|
end
|
|
|
|
def value(object)
|
|
self.class.value(object, @method_name)
|
|
end
|
|
|
|
def value_before_type_cast(object)
|
|
self.class.value_before_type_cast(object, @method_name)
|
|
end
|
|
|
|
class << self
|
|
def value(object, method_name)
|
|
object.send method_name unless object.nil?
|
|
end
|
|
|
|
def value_before_type_cast(object, method_name)
|
|
unless object.nil?
|
|
object.respond_to?(method_name + "_before_type_cast") ?
|
|
object.send(method_name + "_before_type_cast") :
|
|
object.send(method_name)
|
|
end
|
|
end
|
|
|
|
def check_box_checked?(value, checked_value)
|
|
case value
|
|
when TrueClass, FalseClass
|
|
value
|
|
when NilClass
|
|
false
|
|
when Integer
|
|
value != 0
|
|
when String
|
|
value == checked_value
|
|
else
|
|
value.to_i != 0
|
|
end
|
|
end
|
|
|
|
def radio_button_checked?(value, checked_value)
|
|
value.to_s == checked_value.to_s
|
|
end
|
|
end
|
|
|
|
private
|
|
def add_default_name_and_id(options)
|
|
if options.has_key?("index")
|
|
options["name"] ||= tag_name_with_index(options["index"])
|
|
options["id"] ||= tag_id_with_index(options["index"])
|
|
options.delete("index")
|
|
elsif defined?(@auto_index)
|
|
options["name"] ||= tag_name_with_index(@auto_index)
|
|
options["id"] ||= tag_id_with_index(@auto_index)
|
|
else
|
|
options["name"] ||= tag_name + (options.has_key?('multiple') ? '[]' : '')
|
|
options["id"] ||= tag_id
|
|
end
|
|
end
|
|
|
|
def tag_name
|
|
"#{@object_name}[#{@method_name}]"
|
|
end
|
|
|
|
def tag_name_with_index(index)
|
|
"#{@object_name}[#{index}][#{@method_name}]"
|
|
end
|
|
|
|
def tag_id
|
|
"#{sanitized_object_name}_#{@method_name}"
|
|
end
|
|
|
|
def tag_id_with_index(index)
|
|
"#{sanitized_object_name}_#{index}_#{@method_name}"
|
|
end
|
|
|
|
def sanitized_object_name
|
|
@object_name.gsub(/[^-a-zA-Z0-9:.]/, "_").sub(/_$/, "")
|
|
end
|
|
end
|
|
|
|
class FormBuilder #:nodoc:
|
|
# The methods which wrap a form helper call.
|
|
class_inheritable_accessor :field_helpers
|
|
self.field_helpers = (FormHelper.instance_methods - ['form_for'])
|
|
|
|
attr_accessor :object_name, :object, :options
|
|
|
|
def initialize(object_name, object, template, options, proc)
|
|
@object_name, @object, @template, @options, @proc = object_name, object, template, options, proc
|
|
end
|
|
|
|
(field_helpers - %w(label check_box radio_button fields_for)).each do |selector|
|
|
src = <<-end_src
|
|
def #{selector}(method, options = {})
|
|
@template.send(#{selector.inspect}, @object_name, method, options.merge(:object => @object))
|
|
end
|
|
end_src
|
|
class_eval src, __FILE__, __LINE__
|
|
end
|
|
|
|
def fields_for(record_or_name_or_array, *args, &block)
|
|
case record_or_name_or_array
|
|
when String, Symbol
|
|
name = "#{object_name}[#{record_or_name_or_array}]"
|
|
when Array
|
|
object = record_or_name_or_array.last
|
|
name = "#{object_name}[#{ActionController::RecordIdentifier.singular_class_name(object)}]"
|
|
args.unshift(object)
|
|
else
|
|
object = record_or_name_or_array
|
|
name = "#{object_name}[#{ActionController::RecordIdentifier.singular_class_name(object)}]"
|
|
args.unshift(object)
|
|
end
|
|
|
|
@template.fields_for(name, *args, &block)
|
|
end
|
|
|
|
def label(method, text = nil, options = {})
|
|
@template.label(@object_name, method, text, options.merge(:object => @object))
|
|
end
|
|
|
|
def check_box(method, options = {}, checked_value = "1", unchecked_value = "0")
|
|
@template.check_box(@object_name, method, options.merge(:object => @object), checked_value, unchecked_value)
|
|
end
|
|
|
|
def radio_button(method, tag_value, options = {})
|
|
@template.radio_button(@object_name, method, tag_value, options.merge(:object => @object))
|
|
end
|
|
|
|
def error_message_on(method, prepend_text = "", append_text = "", css_class = "formError")
|
|
@template.error_message_on(@object, method, prepend_text, append_text, css_class)
|
|
end
|
|
|
|
def error_messages(options = {})
|
|
@template.error_messages_for(@object_name, options.merge(:object => @object))
|
|
end
|
|
|
|
def submit(value = "Save changes", options = {})
|
|
@template.submit_tag(value, options.reverse_merge(:id => "#{object_name}_submit"))
|
|
end
|
|
end
|
|
end
|
|
|
|
class Base
|
|
cattr_accessor :default_form_builder
|
|
self.default_form_builder = ::ActionView::Helpers::FormBuilder
|
|
end
|
|
end
|