CODEWITHSUNDEEP
ruby-on-railsrails-activerecordrails-admin
Mark Korzhov
Mark Korzhov

Reputation: 2159

How to get a user name by its id in rails_admin?

I have models User and Article.

User has the following associations:

class User < ActiveRecord::Base
  has_many :articles

and Article's:

class Article < ActiveRecord::Base
  belongs_to :user, required: true

I use rails_admin as a control panel and customize a required fields in rails_admin.rb as follows:

  config.model Article do
    list do
      field :id
      field :title
      field :user_id
      field :created_at
    end
  end

But how to implement that instead of :user_id displays the name of the user? I have a username field in my database.

Thanks!

Upvotes: 1

Views: 799

Answers (2)

K M Rakibul Islam
K M Rakibul Islam

Reputation: 34318

In your Article model, you can add a custom method that will return the user_name:

def user_name
  self.user.username
end

Then, you can use this user_name field in your admin like other model attributes:

config.model Article do
  list do
    field :id
    field :title
    field :created_at
    field :user_name
 end
end

Upvotes: 1

Alexandre Voyer
Alexandre Voyer

Reputation: 819

Here's another stab at it...

Rails_admin looks for a "name" or "title" field on the model, if there are none, it will display a somewhat ugly "User#1".

All you need to do in your User Model is to add the following method:

def title
  try(:username)
end

I like to go back to this presentation for Rails Admin's best practices: http://www.slideshare.net/benoitbenezech/rails-admin-overbest-practices

It's a bit dated but everything you need is there (around page 14 for your case)

Upvotes: 0

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