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# frozen_string_literal: true
require "active_support/concern"
module Decidim
# A set of convenient methods to generate dynamic jsonb objects in a way is
# compatible with AttirubteObject and ActiveModel thus making it easy to
# integrate into Rails forms and similar workflows.
module JsonbAttributes
extend ActiveSupport::Concern
class_methods do
# Public: Mirrors the `attribute` interface to define attributes in
# custom jsonb objects.
#
# name - Attribute's name
# fields - The attribute's child fields
#
# Example:
# jsonb_attribute(:settings, [[:custom_setting, String], [:another_setting, Boolean])
# # This will generate `custom_setting`, `custom_setting=` and
# # `another_setting`, `another_setting=` and will keep them
# # syncronized with a hash in `settings`:
# # settings = { "custom_setting" => "demo", "another_setting" => "demo"}
#
# Returns nothing.
def jsonb_attribute(name, fields, *options)
attribute(name, { String => Object }, default: {})
fields.each do |f, type|
attribute f, type, *options
define_method f do
field = public_send(name) || {}
field[f.to_s] || field[f.to_sym]
end
define_method "#{f}=" do |value|
field = public_send(name) || {}
value_type = self.class.attribute_types[f.to_s]
value = value_type.cast(value) if value_type
public_send("#{name}=", field.merge(f => super(value)))
end
end
end
end
end
end
Version data entries
19 entries across 19 versions & 1 rubygems