On Sunday, 9 September 2012 00:49:30 UTC-4, John Merlino wrote:
>
> Without going to detail, I'll just show important code:
>
> text field is passed the name of object, could be a symbol (:user) or
> string ("user[]"). method is datbase attribute or virtual attribute.
> the options hash, among other things, includes the object if persisted
> (e.g. @user).
> def text_field(object_name, method, options = {})
> Tags::TextField.new(object_name, method, self, options).render
> end
>
> TextField doesn't have initialize, it calls on super which is Base,
> and we create some instance variables holding our object information
> and so forth:
> class Base
> ...
>
> 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
> ...
>
> We call render on text field object
> def render
> options = @options.stringify_keys
> options["size"] = options["maxlength"] unless options.key?
> ("size")
> options["type"] ||= field_type
> options["value"] = options.fetch("value")
> { value_before_type_cast(object) } unless field_type == "file"
> options["value"] &&= ERB::Util.html_escape(options["value"])
> add_default_name_and_id(options)
>
> [snip]
>
> and thats pretty much it. Wheres the name attribute and its value
> appended to the returned string from render?
>
add_default_name_and_id is doing the work here.
--Matt Jones
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