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# frozen_string_literal: true
require "active_support/concern"
module Decidim
# A set of convenience methods to deal with attachment attributes for Virtus
# models that may set the attachment records through the original model
# (Decidim::Attachment) or through the user submitted form data (String).
module AttachmentAttributes
extend ActiveSupport::Concern
class_methods do
# Public: Mirrors Virtus' `attribute` interface to define attachment
# attributes for form objects.
#
# name - The attribute's name
#
#
# Example:
#
# attachment_attribute :photos
# # This will create two attributes of the following types:
# # attribute :photos, Array[String]
# # attribute :add_photos, Array
# # In addition, it will generate the getter method for the attribute
# # returning an array of the Decidim::Attachment records.
#
# Returns nothing.
def attachments_attribute(name)
attribute name, Array[String]
attribute "add_#{name}".to_sym, Array
# Define the getter method that fetches the attachment records based on
# their types. For Strings and Integers, assumes they are IDs and will
# fetch the attachment record matching that ID.
variable_name = "@#{name}_records"
define_method name do
return instance_variable_get(variable_name) if instance_variable_defined?(variable_name)
original = instance_variable_get("@#{name}")
return original unless original.is_a?(Array)
instance_variable_set(
variable_name,
original.map do |attachment|
if attachment.is_a?(String) || attachment.is_a?(Integer)
Decidim::Attachment.find_by(id: attachment)
else
attachment
end
end.compact
)
end
end
end
end
end
Version data entries
25 entries across 25 versions & 1 rubygems