51 lines
1.9 KiB
Ruby
51 lines
1.9 KiB
Ruby
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require 'cgi'
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require 'erb'
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module ActionView
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module Helpers
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# This is poor man's Builder for the rare cases where you need to programmatically make tags but can't use Builder.
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module TagHelper
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include ERB::Util
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# Examples:
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# * <tt>tag("br") => <br /></tt>
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# * <tt>tag("input", { "type" => "text"}) => <input type="text" /></tt>
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def tag(name, options = nil, open = false)
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"<#{name}#{tag_options(options.stringify_keys) if options}" + (open ? ">" : " />")
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end
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# Examples:
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# * <tt>content_tag("p", "Hello world!") => <p>Hello world!</p></tt>
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# * <tt>content_tag("div", content_tag("p", "Hello world!"), "class" => "strong") => </tt>
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# <tt><div class="strong"><p>Hello world!</p></div></tt>
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def content_tag(name, content, options = nil)
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"<#{name}#{tag_options(options.stringify_keys) if options}>#{content}</#{name}>"
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end
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# Returns a CDATA section for the given +content+. CDATA sections
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# are used to escape blocks of text containing characters which would
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# otherwise be recognized as markup. CDATA sections begin with the string
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# <tt><![CDATA[</tt> and end with (and may not contain) the string
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# <tt>]]></tt>.
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def cdata_section(content)
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"<![CDATA[#{content}]]>"
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end
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private
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def tag_options(options)
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cleaned_options = convert_booleans(options.stringify_keys.reject {|key, value| value.nil?})
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' ' + cleaned_options.map {|key, value| %(#{key}="#{html_escape(value.to_s)}")}.sort * ' ' unless cleaned_options.empty?
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end
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def convert_booleans(options)
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%w( disabled readonly multiple ).each { |a| boolean_attribute(options, a) }
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options
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end
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def boolean_attribute(options, attribute)
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options[attribute] ? options[attribute] = attribute : options.delete(attribute)
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end
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end
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end
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end
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