Change Default URL
Sometimes, we want to change the displayed URL because url like /post/4/edit is not descriptive and then friendly_id come into play! Here is a simple guide for using friendly_id in your rails app.
Add Gem
First thing you need to do is to add friendly_id gem to you Gemfile. Just add gem 'friendly_id', '~> 5.1.0' to your Gemfile and run bundle install and restart your server.
Create Friendly Id Slugs
You need to create a table in your database. It’s pretty easy to do.
If you want to use friendly id for a new resource, say User, run these commands:
```rails generate friendly_id
rails generate scaffold user name:string slug:string:uniq
rake db:migrate
If you want to use friendly id for an existing resource, say Post, run these commands:
```rails generate friendly_id
rails generate migration add_slug_to_posts slug:string:uniq
rake db:migrate
Edit Model
You may need to edit your corresponding model(like User or Post). Change :title in the code to meet your need.
class Post < ActiveRecord::Base
validates(:title, :content, presence: true)
extend FriendlyId
friendly_id :title, use: :slugged
end
Edit Controller
To get things done, you also need to edit you corresponding controller. Use friendly.find instead of find and permit :slug.
class PostsController < ApplicationController
private
def post_params
params.require(:post).permit(:title, :content, :category, :slug)
end
def find_post
@post = Post.friendly.find(params[:id])
end
end
One More Thing
If you use friendly id for your existing resource, you may also need to run this command in rails console Post.find_each(&:save). Then it should work.
Deploy to Heroku
If your app is deployed at heroku, these commands are also need:
git push heroku master
heroku run rake db:migrate
heroku run rails c
Post.find_each(&:save)
exit
