I'm trying to get rid of duplication of strong params in controller that handles STI models. For example I have models:
class Recipe < ActiveRecord::Base
has many :fruits
accepts_nested_attributes_for :fruits, allow_destroy :true
end
class Fruit < ActiveRecord::Base
belongs_to :recipe
end
class Apple < Fruit
end
class Orange < Fruit
end
class RecipesController < Admin::BaseController
...
def update
@recipe.update_attributes recipe_params
end
...
def recipe_params
params.require(:recipe).permit( :some_recipe_params
...
??? )
end
end
Is there any convenient way to permit 'apple_attributes' and 'orange_attributes' without repeating them in permit options ? In future application will have more fruit types. Or maybe fruit models should be handled in another controller.
I found an ugly way to do it with whitelisted:
params.require(:recipe).permit( ... ).tap do |whitelisted|
Recipe.fruit_types.each do |type|
whitelisted[:"#{type.pluralize}_attributes"] = params[:recipe][:"#{type.pluralize}_attributes"] || {}
end
end
