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Extract TextFieldTag

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1 parent e749fb5 commit 520fe7defea2271cc540e8190a7b9d83d8dfb8d5 @rafaelfranca rafaelfranca committed Jan 16, 2012
@@ -677,7 +677,7 @@ def label(object_name, method, content_or_options = nil, options = nil, &block)
# # => <input type="text" id="snippet_code" name="snippet[code]" size="20" value="#{@snippet.code}" class="code_input" />
#
def text_field(object_name, method, options = {})
- InstanceTag.new(object_name, method, self, options.delete(:object)).to_input_field_tag("text", options)
+ ActionView::Helpers::Tags::TextFieldTag.new(object_name, method, self, options).render
end
# Returns an input tag of the "password" type tailored for accessing a specified attribute (identified by +method+) on an object
@@ -1,7 +1,8 @@
module ActionView
module Helpers
module Tags
- autoload :LabelTag, 'action_view/helpers/tags/label_tag'
+ autoload :LabelTag, 'action_view/helpers/tags/label_tag'
+ autoload :TextFieldTag, 'action_view/helpers/tags/text_field_tag'
end
end
end
@@ -0,0 +1,114 @@
+module ActionView
+ module Helpers
+ module Tags
+ class TextFieldTag
+ include Helpers::ActiveModelInstanceTag, Helpers::TagHelper, Helpers::FormTagHelper
+
+ DEFAULT_FIELD_OPTIONS = { "size" => 30 }
+
+ attr_reader :object
+
+ def initialize(object_name, method_name, template_object, options = {})
+ @object_name, @method_name = object_name.to_s.dup, method_name.to_s.dup
+ @template_object = template_object
+
+ @object_name.sub!(/\[\]$/,"") || @object_name.sub!(/\[\]\]$/,"]")
+ @object = retrieve_object(options.delete(:object))
+ @options = options
+ @auto_index = retrieve_autoindex(Regexp.last_match.pre_match) if Regexp.last_match
+ end
+
+ def render(&block)
+ options = @options.stringify_keys
+ options["size"] = options["maxlength"] || DEFAULT_FIELD_OPTIONS["size"] unless options.key?("size")
+ options = DEFAULT_FIELD_OPTIONS.merge(options)
+ options["type"] ||= "text"
+ options["value"] = options.fetch("value"){ value_before_type_cast(object) }
+ options["value"] &&= ERB::Util.html_escape(options["value"])
+ add_default_name_and_id(options)
+ tag("input", options)
+ end
+
+ private
+
+ def value_before_type_cast(object)
+ 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 retrieve_object(object)
+ if object
+ object
+ elsif @template_object.instance_variable_defined?("@#{@object_name}")
+ @template_object.instance_variable_get("@#{@object_name}")
+ end
+ rescue NameError
+ # As @object_name may contain the nested syntax (item[subobject]) we need to fallback to nil.
+ nil
+ end
+
+ def retrieve_autoindex(pre_match)
+ object = self.object || @template_object.instance_variable_get("@#{pre_match}")
+ if object && object.respond_to?(:to_param)
+ 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
+
+ def add_default_name_and_id_for_value(tag_value, options)
+ unless tag_value.nil?
+ pretty_tag_value = tag_value.to_s.gsub(/\s/, "_").gsub(/[^-\w]/, "").downcase
+ specified_id = options["id"]
+ add_default_name_and_id(options)
+ options["id"] += "_#{pretty_tag_value}" if specified_id.blank? && options["id"].present?
+ else
+ add_default_name_and_id(options)
+ end
+ end
+
+ def add_default_name_and_id(options)
+ if options.has_key?("index")
+ options["name"] ||= tag_name_with_index(options["index"])
+ options["id"] = options.fetch("id"){ tag_id_with_index(options["index"]) }
+ options.delete("index")
+ elsif defined?(@auto_index)
+ options["name"] ||= tag_name_with_index(@auto_index)
+ options["id"] = options.fetch("id"){ tag_id_with_index(@auto_index) }
+ else
+ options["name"] ||= tag_name + (options['multiple'] ? '[]' : '')
+ options["id"] = options.fetch("id"){ tag_id }
+ end
+ options["id"] = [options.delete('namespace'), options["id"]].compact.join("_").presence
+ end
+
+ def tag_name
+ "#{@object_name}[#{sanitized_method_name}]"
+ end
+
+ def tag_name_with_index(index)
+ "#{@object_name}[#{index}][#{sanitized_method_name}]"
+ end
+
+ def tag_id
+ "#{sanitized_object_name}_#{sanitized_method_name}"
+ end
+
+ def tag_id_with_index(index)
+ "#{sanitized_object_name}_#{index}_#{sanitized_method_name}"
+ end
+
+ def sanitized_object_name
+ @sanitized_object_name ||= @object_name.gsub(/\]\[|[^-a-zA-Z0-9:.]/, "_").sub(/_$/, "")
+ end
+
+ def sanitized_method_name
+ @sanitized_method_name ||= @method_name.sub(/\?$/,"")
+ end
+ end
+ end
+ end
+end

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