102 lines
3.4 KiB
Ruby
102 lines
3.4 KiB
Ruby
![]() |
module SimpleForm
|
||
|
module Inputs
|
||
|
class CollectionInput < Base
|
||
|
# Default boolean collection for use with selects/radios when no
|
||
|
# collection is given. Always fallback to this boolean collection.
|
||
|
# Texts can be translated using i18n in "simple_form.yes" and
|
||
|
# "simple_form.no" keys. See the example locale file.
|
||
|
def self.boolean_collection
|
||
|
i18n_cache :boolean_collection do
|
||
|
[ [I18n.t(:"simple_form.yes", :default => 'Yes'), true],
|
||
|
[I18n.t(:"simple_form.no", :default => 'No'), false] ]
|
||
|
end
|
||
|
end
|
||
|
|
||
|
def input
|
||
|
raise NotImplementedError,
|
||
|
"input should be implemented by classes inheriting from CollectionInput"
|
||
|
end
|
||
|
|
||
|
def input_options
|
||
|
options = super
|
||
|
options[:include_blank] = true unless skip_include_blank?
|
||
|
options
|
||
|
end
|
||
|
|
||
|
private
|
||
|
|
||
|
def collection
|
||
|
@collection ||= begin
|
||
|
collection = options.delete(:collection) || self.class.boolean_collection
|
||
|
collection.respond_to?(:call) ? collection.call : collection.to_a
|
||
|
end
|
||
|
end
|
||
|
|
||
|
def has_required?
|
||
|
super && (input_options[:include_blank] || multiple?)
|
||
|
end
|
||
|
|
||
|
# Check if :include_blank must be included by default.
|
||
|
def skip_include_blank?
|
||
|
(options.keys & [:prompt, :include_blank, :default, :selected]).any? || multiple?
|
||
|
end
|
||
|
|
||
|
def multiple?
|
||
|
!!options[:input_html].try(:[], :multiple)
|
||
|
end
|
||
|
|
||
|
# Detect the right method to find the label and value for a collection.
|
||
|
# If no label or value method are defined, will attempt to find them based
|
||
|
# on default label and value methods that can be configured through
|
||
|
# SimpleForm.collection_label_methods and
|
||
|
# SimpleForm.collection_value_methods.
|
||
|
def detect_collection_methods
|
||
|
label, value = options.delete(:label_method), options.delete(:value_method)
|
||
|
|
||
|
unless label && value
|
||
|
common_method_for = detect_common_display_methods
|
||
|
label ||= common_method_for[:label]
|
||
|
value ||= common_method_for[:value]
|
||
|
end
|
||
|
|
||
|
[label, value]
|
||
|
end
|
||
|
|
||
|
def detect_common_display_methods(collection_classes = detect_collection_classes)
|
||
|
collection_translated = translate_collection if collection_classes == [Symbol]
|
||
|
|
||
|
if collection_translated || collection_classes.include?(Array)
|
||
|
{ :label => :first, :value => :last }
|
||
|
elsif collection_includes_basic_objects?(collection_classes)
|
||
|
{ :label => :to_s, :value => :to_s }
|
||
|
else
|
||
|
sample = collection.first || collection.last
|
||
|
|
||
|
{ :label => SimpleForm.collection_label_methods.find { |m| sample.respond_to?(m) },
|
||
|
:value => SimpleForm.collection_value_methods.find { |m| sample.respond_to?(m) } }
|
||
|
end
|
||
|
end
|
||
|
|
||
|
def detect_collection_classes(some_collection = collection)
|
||
|
some_collection.map { |e| e.class }.uniq
|
||
|
end
|
||
|
|
||
|
def collection_includes_basic_objects?(collection_classes)
|
||
|
(collection_classes & [
|
||
|
String, Integer, Fixnum, Bignum, Float, NilClass, Symbol, TrueClass, FalseClass
|
||
|
]).any?
|
||
|
end
|
||
|
|
||
|
def translate_collection
|
||
|
if translated_collection = translate(:options)
|
||
|
@collection = collection.map do |key|
|
||
|
[translated_collection[key] || key, key]
|
||
|
end
|
||
|
true
|
||
|
end
|
||
|
end
|
||
|
end
|
||
|
end
|
||
|
end
|
||
|
|