Some ways to DRY in Rails

1. Seminar
Some ways to DRY in Rails
Presenter: Bui Trung Kien – Framgia Inc

2. Content
●
Model
●
Controller
●
Views

3. Model
●
Use 'scope'
scope :admin, ->{where(admin: true)}
●
Use 'module'
app/model/concern/set_user.rb
module SetUser
//code goes here
end
app/model/user.rb
class Admin < ActiveRecord::Base
include SetUser

4. Controller
●
Use 'before_action'
app/controllers/users_controller.rb
class UsersController < ApplicationController
before_action :set_user,
only: [:show, :edit, :update, :destroy]
.
.
.
private
def set_user
@user = User.find params[:id]
end

5. Controller
Use respond_with and respond_to
class UsersController <
ApplicationController
respond_to :html, :json, :xml
def index
@users = User.all
respond_with @users
end

6. Controller
●
Move business code logic into model methods.
●
Move view logic code into helper methods.
And then try to DRY it up.

7. View
●
Use 'partial'.
●
Use nested layout.

8. THANKS FOR WATCHING