This article will discuss how to implement an admin panel with activeadmin in Ruby on Rails. First, create a project and a few models.
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rails new active_admin_blog
rails g scaffold User email name
rails g scaffold Post title body user:belongs_to
rails db:migrate
Now in app/models/user.rb, define the following relationship:
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# app/models/user.rb
class User < ApplicationRecord
has_many :posts
end
Add the required gems.
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gem 'activeadmin'
gem 'devise'
Run the following command:
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bundle install
Now configure active admin.
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rails g active_admin:install
Add resources for active admin.
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rails generate active_admin:resource User
rails generate active_admin:resource Post
Migrate the database.
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rails db:migrate
Run rails server and look at http://localhost:3000/admin/login - you will see an admin login form. Open rails console and create an admin.
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AdminUser.create(email: 'admin@email.com', password: '123123', password_confirmation: '123123')
Uncomment the following line from app/admin/users.rb:
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# app/admin/users.rb
permit_params :email, :name
Uncomment the following line from app/admin/posts.rb:
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# app/admin/posts.rb
permit_params :title, :body, :user_id
Once you’ve created a user, everything should work smoothly!