Views for unique validations created on loading, not execution

This commit is contained in:
Sam Lown 2011-05-20 12:21:42 +02:00
parent 938bf2cf2c
commit d56179aa6b
3 changed files with 48 additions and 15 deletions

View file

@ -10,6 +10,7 @@
* Removed railties dependency (DAddYE) * Removed railties dependency (DAddYE)
* DesignDoc cache refreshed if a database is deleted. * DesignDoc cache refreshed if a database is deleted.
* Fixing dirty tracking on collection_of association. * Fixing dirty tracking on collection_of association.
* Uniqueness Validation views created on initialization, not on demand!
## 1.1.0.beta5 - 2011-04-30 ## 1.1.0.beta5 - 2011-04-30

View file

@ -3,7 +3,7 @@
module CouchRest module CouchRest
module Model module Model
module Validations module Validations
# Validates if a field is unique # Validates if a field is unique
class UniquenessValidator < ActiveModel::EachValidator class UniquenessValidator < ActiveModel::EachValidator
@ -11,29 +11,33 @@ module CouchRest
# or add one if necessary. # or add one if necessary.
def setup(model) def setup(model)
@model = model @model = model
if options[:view].blank?
attributes.each do |attribute|
opts = merge_view_options(attribute)
if model.respond_to?(:has_view?) && !model.has_view?(opts[:view_name])
opts[:keys] << {:allow_nil => true}
model.view_by(*opts[:keys])
end
end
end
end end
def validate_each(document, attribute, value) def validate_each(document, attribute, value)
keys = [attribute] opts = merge_view_options(attribute)
unless options[:scope].nil?
keys = (options[:scope].is_a?(Array) ? options[:scope] : [options[:scope]]) + keys
end
values = keys.map{|k| document.send(k)}
values = values.first if values.length == 1
view_name = options[:view].nil? ? "by_#{keys.join('_and_')}" : options[:view] values = opts[:keys].map{|k| document.send(k)}
values = values.first if values.length == 1
model = (document.respond_to?(:model_proxy) && document.model_proxy ? document.model_proxy : @model) model = (document.respond_to?(:model_proxy) && document.model_proxy ? document.model_proxy : @model)
# Determine the base of the search # Determine the base of the search
base = options[:proxy].nil? ? model : document.instance_eval(options[:proxy]) base = opts[:proxy].nil? ? model : document.instance_eval(opts[:proxy])
if base.respond_to?(:has_view?) && !base.has_view?(view_name) if base.respond_to?(:has_view?) && !base.has_view?(opts[:view_name])
raise "View #{document.class.name}.#{options[:view]} does not exist!" unless options[:view].nil? raise "View #{document.class.name}.#{opts[:view_name]} does not exist for validation!"
keys << {:allow_nil => true}
model.view_by(*keys)
end end
rows = base.view(view_name, :key => values, :limit => 2, :include_docs => false)['rows'] rows = base.view(opts[:view_name], :key => values, :limit => 2, :include_docs => false)['rows']
return if rows.empty? return if rows.empty?
unless document.new? unless document.new?
@ -47,6 +51,17 @@ module CouchRest
end end
end end
private
def merge_view_options(attr)
keys = [attr]
keys.unshift(*options[:scope]) unless options[:scope].nil?
view_name = options[:view].nil? ? "by_#{keys.join('_and_')}" : options[:view]
options.merge({:keys => keys, :view_name => view_name})
end
end end
end end

View file

@ -16,7 +16,11 @@ describe "Validations" do
before(:all) do before(:all) do
@objs = ['title 1', 'title 2', 'title 3'].map{|t| WithUniqueValidation.create(:title => t)} @objs = ['title 1', 'title 2', 'title 3'].map{|t| WithUniqueValidation.create(:title => t)}
end end
it "should create a new view if none defined before performing" do
WithUniqueValidation.has_view?(:by_title).should be_true
end
it "should validate a new unique document" do it "should validate a new unique document" do
@obj = WithUniqueValidation.create(:title => 'title 4') @obj = WithUniqueValidation.create(:title => 'title 4')
@obj.new?.should_not be_true @obj.new?.should_not be_true
@ -35,6 +39,7 @@ describe "Validations" do
@obj.should be_valid @obj.should be_valid
end end
it "should allow own view to be specified" do it "should allow own view to be specified" do
# validates_uniqueness_of :code, :view => 'all' # validates_uniqueness_of :code, :view => 'all'
WithUniqueValidationView.create(:title => 'title 1', :code => '1234') WithUniqueValidationView.create(:title => 'title 1', :code => '1234')
@ -50,6 +55,13 @@ describe "Validations" do
}.should raise_error }.should raise_error
end end
it "should not try to create a defined view" do
WithUniqueValidationView.validates_uniqueness_of :title, :view => 'fooobar'
WithUniqueValidationView.has_view?('fooobar').should be_false
WithUniqueValidationView.has_view?('by_title').should be_false
end
it "should not try to create new view when already defined" do it "should not try to create new view when already defined" do
@obj = @objs[1] @obj = @objs[1]
@obj.class.should_not_receive('view_by') @obj.class.should_not_receive('view_by')
@ -60,6 +72,11 @@ describe "Validations" do
end end
context "with a proxy parameter" do context "with a proxy parameter" do
it "should create a new view despite proxy" do
WithUniqueValidationProxy.has_view?(:by_title).should be_true
end
it "should be used" do it "should be used" do
@obj = WithUniqueValidationProxy.new(:title => 'test 6') @obj = WithUniqueValidationProxy.new(:title => 'test 6')
proxy = @obj.should_receive('proxy').and_return(@obj.class) proxy = @obj.should_receive('proxy').and_return(@obj.class)