DDC (Data Driven Controllers) lets you declare how to wire Rails into your app without the need for code. A Rails controller's job is parsing/interpreting parameters to send to your application domain and taking those results and translating them back out to an HTTP result (html/status/headers). DDC removes the need for all the boiler plate controller code and tests.
By adhering to a couple of interfaces, you can avoid writing most controller code and tests. See this blog post for more information.
Add this line to your application's Gemfile:
gem 'ddc'And then execute:
$ bundle
Or install it yourself as:
$ gem install ddc
controllers/monkeys_controller.rb
DDC::ControllerBuilder.build :monkeys,
before_actions: [:authenticate_user!],
actions: {
show: {
context: 'context_builder#user_and_id',
service: 'monkey_service#find'
},
index: {
context: 'context_builder#user',
service: 'monkey_service#find_all'
},
update: {
context: 'context_builder#monkey',
service: 'monkey_service#update'
},
create: {
context: 'context_builder#monkey',
service: 'monkey_service#create'
}
}lib/context_builder.rb
class ContextBuilder
def user(context_params)
HashWithIndifferentAccess.new current_user: context_params[:current_user]
end
def user_and_id(context_params)
user(context_params).merge(id: context_params[:params][:id])
end
def monkey(context_params)
info = context_params[:params].permit(monkey: [:color, :poo])
user_and_id(context_params).merge(info)
end
endlib/monkeys_service.rb
class MonkeyService
def find(context)
id, user = context.values_at :id, :current_user
me = find_for_user user, id
if me.present?
ok(me)
else
not_found
end
end
def update(context)
id, user, updates = context.values_at :id, :current_user, @model_type
me = find_for_user user, id
translated_updates = translated_cid_to_id(updates)
if me.present?
me.update_attributes translated_updates
ok(me)
else
not_found
end
end
private
def not_found
{status: :not_found}.freeze
end
def ok(obj)
{status: :ok, object: obj}
end
end
# shortcut for default CRUD service
MonkeyService = DDC::ServiceBuilder.build(:monkey)- Fork it ( https://github.com/atomicobject/ddc/fork )
- Create your feature branch (
git checkout -b my-new-feature) - Commit your changes (
git commit -am 'Add some feature') - Push to the branch (
git push origin my-new-feature) - Create a new Pull Request
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