1+ module Rubaidh #:nodoc:
2+ module FormHelper
3+
4+ # def self.included(base)
5+ # base.alias_method_chain :fields_for, :fieldset
6+ # end
7+ #
8+ # # Behaves just like the regular +fields_for+ with a little extra magic
9+ # # juju in that it creates a fieldset around the fields inside.
10+ # def fields_for_with_fieldset(object_name, *args, &block)
11+ # options = args.last.is_a?(Hash) ? args.pop : {}
12+ # object = args.first
13+ # legend = options.delete(:legend) || object_name.to_s.humanize
14+ # concat tag('fieldset', options, true), block.binding
15+ # concat "<legend>#{legend}</legend>", block.binding
16+ # fields_for_without_fieldset(object_name, object, options.merge(:builder => FormBuilder), &block)
17+ # concat "</fieldset>", block.binding
18+ # end
19+
20+ def label_for ( object_name , method , options = { } )
21+ ActionView ::Helpers ::InstanceTag . new ( object_name , method , self , nil , options . delete ( :object ) ) . to_label_tag ( options )
22+ end
23+
24+ def label_tag ( name , text , options = { } )
25+ content_tag ( 'label' , text , { 'for' => name } . merge ( options . stringify_keys ) )
26+ end
27+
28+ def fieldset ( options , builder , &block )
29+ legend = options . delete ( :legend )
30+ concat tag ( 'fieldset' , options , true ) , block . binding
31+ concat "<legend>#{ legend } , block . binding unless legend . blank?
32+ block . call ( builder )
33+ concat "</fieldset>" , block . binding
34+ end
35+
36+ def grouped_collection_select ( object_name , method , collection , group_method , group_label_method , value_method , text_method , options = { } , html_options = { } )
37+ ActionView ::Helpers ::InstanceTag . new ( object_name , method , self , nil , options . delete ( :object ) ) . to_grouped_collection_select_tag ( collection , group_method , group_label_method , value_method , text_method , options , html_options )
38+ end
39+ end
40+
41+ module InstanceTag #:nodoc:
42+ def to_label_tag ( options = { } )
43+ options = options . stringify_keys
44+ add_default_name_and_id ( options )
45+ options . delete ( 'name' )
46+ options [ 'for' ] = options . delete ( 'id' )
47+
48+ text = options . delete ( 'label' ) || @method_name . humanize
49+ text += "\n " + content_tag ( 'span' , '(required)' , :class => :required ) if options . delete ( 'required' )
50+ description = options . delete ( 'description' )
51+
52+ label = content_tag 'label' , text , options
53+
54+ unless description . blank?
55+ label += content_tag ( 'p' , description , { } )
56+ end
57+
58+ label
59+ end
60+
61+ def to_grouped_collection_select_tag ( collection , group_method , group_label_method , value_method , text_method , options , html_options )
62+ html_options = html_options . stringify_keys
63+ add_default_name_and_id ( html_options )
64+ value = value ( object )
65+ content_tag (
66+ "select" ,
67+ add_options (
68+ option_groups_from_collection_for_select (
69+ collection , group_method , group_label_method ,
70+ value_method , text_method , value ) ,
71+ options , value ) ,
72+ html_options
73+ )
74+ end
75+ end
76+
77+ module FormBuilderMethods #:nodoc:
78+ def label_for ( method , options = { } )
79+ @template . label_for ( @object_name , method , options . merge ( :object => @object ) )
80+ end
81+
82+ # Implement a collection select for groups of options. See
83+ # +options_from_collection_for_select+ for more information, but it's more
84+ # or less the same as +collection_select+.
85+ def grouped_collection_select ( method , collection , group_method , group_label_method , value_method , text_method , options = { } , html_options = { } )
86+ @template . grouped_collection_select ( @object_name , method , collection , group_method , group_label_method , value_method , text_method , options . merge ( :object => @object ) , html_options )
87+ end
88+ end
89+
90+ class FormBuilder < ActionView ::Helpers ::FormBuilder #:nodoc:
91+ ( ActionView ::Helpers ::FormHelper . instance_methods - %w( label_for hidden_field check_box radio_button form_for fields_for ) + %w( datetime_select date_select ) ) . each do |selector |
92+ src = <<-end_src
93+ def #{ selector }
94+ label_options = label_options_from_options(options)
95+ label_for(method, label_options) + "\n " + super
96+ end
97+ end_src
98+ class_eval src , __FILE__ , __LINE__
99+ end
100+
101+ def select ( method , choices , options = { } , html_options = { } )
102+ label_options = label_options_from_options ( options )
103+ label_for ( method , label_options ) + "\n " + super
104+ end
105+
106+ def collection_select ( method , collection , value_method , text_method , options = { } , html_options = { } )
107+ label_options = label_options_from_options ( options )
108+ label_method = method . to_s . gsub /_ids$/ , 's'
109+
110+ # Generate the correct name for HABTM relations and multi-select boxes.
111+ html_options [ :name ] = "#{ object_name } #{ method } if html_options [ :multiple ]
112+
113+ label_for ( label_method , label_options ) + "\n " + super
114+ end
115+
116+ def grouped_collection_select ( method , collection , group_method , group_label_method , value_method , text_method , options = { } , html_options = { } )
117+ label_options = label_options_from_options ( options )
118+ label_method = method . to_s . gsub /_ids$/ , 's'
119+
120+ # Generate the correct name for HABTM relations and multi-select boxes.
121+ html_options [ :name ] = "#{ object_name } #{ method } if html_options [ :multiple ]
122+
123+ label_for ( label_method , label_options ) + "\n " + super
124+ end
125+
126+ def check_box ( method , options = { } , checked_value = "1" , unchecked_value = "0" )
127+ label_options = label_options_from_options ( options )
128+ super + "\n " + label_for ( method , label_options )
129+ end
130+
131+ def radio_button ( method , tag_value , options = { } )
132+ label_options = label_options_from_options ( options )
133+ super + "\n " + label_for ( method , label_options )
134+ end
135+
136+ def fields_for ( object_name , object , builder = self . class , &proc )
137+ @template . fields_for ( object_name , object , builder , &proc )
138+ end
139+
140+ def fieldset ( options = { } , builder = self , &block )
141+ @template . fieldset ( options , builder , &block )
142+ end
143+
144+ private
145+ def label_options_from_options ( options )
146+ label_options = options . dup
147+
148+ # Remove the options from the main field which apply solely to the
149+ # label.
150+ [ :label , :description , :required ] . each do |v |
151+ options . delete ( v )
152+ end
153+
154+ # Tidy up the label options so they only have what's required.
155+ label_options . reject do |k , v |
156+ ![ :id , :label , :description , :required ] . include? ( k )
157+ end
158+ end
159+ end
160+ end
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