diff options
Diffstat (limited to 'actionpack/lib/action_view/helpers/tags/collection_helpers.rb')
-rw-r--r-- | actionpack/lib/action_view/helpers/tags/collection_helpers.rb | 82 |
1 files changed, 82 insertions, 0 deletions
diff --git a/actionpack/lib/action_view/helpers/tags/collection_helpers.rb b/actionpack/lib/action_view/helpers/tags/collection_helpers.rb new file mode 100644 index 0000000000..4e33e79a36 --- /dev/null +++ b/actionpack/lib/action_view/helpers/tags/collection_helpers.rb @@ -0,0 +1,82 @@ +module ActionView + module Helpers + module Tags + module CollectionHelpers + class Builder + attr_reader :object, :text, :value + + def initialize(template_object, object_name, method_name, object, + sanitized_attribute_name, text, value, input_html_options) + @template_object = template_object + @object_name = object_name + @method_name = method_name + @object = object + @sanitized_attribute_name = sanitized_attribute_name + @text = text + @value = value + @input_html_options = input_html_options + end + + def label(label_html_options={}, &block) + @template_object.label(@object_name, @sanitized_attribute_name, @text, label_html_options, &block) + end + end + + def initialize(object_name, method_name, template_object, collection, value_method, text_method, options, html_options) + @collection = collection + @value_method = value_method + @text_method = text_method + @html_options = html_options + + super(object_name, method_name, template_object, options) + end + + private + + def instantiate_builder(builder_class, item, value, text, html_options) + builder_class.new(@template_object, @object_name, @method_name, item, + sanitize_attribute_name(value), text, value, html_options) + end + + # Generate default options for collection helpers, such as :checked and + # :disabled. + def default_html_options_for_collection(item, value) #:nodoc: + html_options = @html_options.dup + + [:checked, :selected, :disabled].each do |option| + next unless current_value = @options[option] + + accept = if current_value.respond_to?(:call) + current_value.call(item) + else + Array(current_value).map(&:to_s).include?(value.to_s) + end + + if accept + html_options[option] = true + elsif option == :checked + html_options[option] = false + end + end + + html_options[:object] = @object + html_options + end + + def sanitize_attribute_name(value) #:nodoc: + "#{sanitized_method_name}_#{sanitized_value(value)}" + end + + def render_collection #:nodoc: + @collection.map do |item| + value = value_for_collection(item, @value_method) + text = value_for_collection(item, @text_method) + default_html_options = default_html_options_for_collection(item, value) + + yield item, value, text, default_html_options + end.join.html_safe + end + end + end + end +end |