95 lines
3.3 KiB
Ruby
95 lines
3.3 KiB
Ruby
module SimpleForm
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module Inputs
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class CollectionInput < Base
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# Default boolean collection for use with selects/radios when no
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# collection is given. Always fallback to this boolean collection.
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# Texts can be translated using i18n in "simple_form.yes" and
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# "simple_form.no" keys. See the example locale file.
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def self.boolean_collection
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i18n_cache :boolean_collection do
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[ [I18n.t(:"simple_form.yes", :default => 'Yes'), true],
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[I18n.t(:"simple_form.no", :default => 'No'), false] ]
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end
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end
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def input
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label_method, value_method = detect_collection_methods
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@builder.send(:"collection_#{input_type}", attribute_name, collection,
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value_method, label_method, input_options, input_html_options)
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end
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def input_options
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options = super
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options[:include_blank] = true unless skip_include_blank?
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options
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end
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private
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def collection
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@collection ||= begin
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collection = options.delete(:collection) || self.class.boolean_collection
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collection.respond_to?(:call) ? collection.call : collection.to_a
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end
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end
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# Checkbox components does not use the required html tag.
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# See more info here - https://github.com/plataformatec/simple_form/issues/340#issuecomment-2871956
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def has_required?
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super && (input_options[:include_blank] || multiple?) && input_type != :check_boxes
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end
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# Check if :include_blank must be included by default.
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def skip_include_blank?
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(options.keys & [:prompt, :include_blank, :default, :selected]).any? || multiple?
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end
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def multiple?
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!!options[:input_html].try(:[], :multiple)
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end
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# Detect the right method to find the label and value for a collection.
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# If no label or value method are defined, will attempt to find them based
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# on default label and value methods that can be configured through
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# SimpleForm.collection_label_methods and
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# SimpleForm.collection_value_methods.
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def detect_collection_methods
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label, value = options.delete(:label_method), options.delete(:value_method)
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unless label && value
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common_method_for = detect_common_display_methods
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label ||= common_method_for[:label]
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value ||= common_method_for[:value]
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end
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[label, value]
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end
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def detect_common_display_methods
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collection_classes = detect_collection_classes
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if collection_classes.include?(Array)
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{ :label => :first, :value => :last }
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elsif collection_includes_basic_objects?(collection_classes)
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{ :label => :to_s, :value => :to_s }
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else
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sample = collection.first || collection.last
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{ :label => SimpleForm.collection_label_methods.find { |m| sample.respond_to?(m) },
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:value => SimpleForm.collection_value_methods.find { |m| sample.respond_to?(m) } }
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end
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end
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def detect_collection_classes
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collection.map { |e| e.class }.uniq
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end
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def collection_includes_basic_objects?(collection_classes)
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(collection_classes & [
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String, Integer, Fixnum, Bignum, Float, NilClass, Symbol, TrueClass, FalseClass
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]).any?
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end
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end
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end
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end
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