Rails: Unpermitted parameter in Rails 5

Question

First of all I want simply get an object inside the current object that I\'m sending to my backend.

I have this simple JSON (generated from a f

Answer 1

I had this issue when working on a Rails 6 application.

My application consists of a User model that has a one-to-one relationship a Personal_Info model

My original code was this:

User Model

class User < ApplicationRecord 
  has_one :personal_info, class_name: 'PersonalInfo', dependent: :destroy
  accepts_nested_attributes_for :personal_info, allow_destroy: true
end

Personal Info Model

class PersonalInfo < ApplicationRecord
  belongs_to :user
end

User Controller

class UsersController < ApplicationController

  def index
    @users = User.all
  end
  .
  .

  def user_params
    params.require(:user).permit(:email, :password, :password_confirmation,
                                 personal_info_attributes: [:first_name,  
                                 :last_name, :phone, :gender, :dob, 
                                 :address, :city, :state, :country])
  end
end

The issue was that I did not add the Personal_Info id to the accepted user params (parameters).

Here's how I fixed it:

I simply had to add the Personal_Info id to the UsersController params this way:

User Controller

class UsersController < ApplicationController

  def index
    @users = User.all
  end
  .
  .

  def user_params
    params.require(:user).permit(:email, :password, :password_confirmation,
                                 personal_info_attributes: [:id, :first_name,  
                                 :last_name, :phone, :gender, :dob, 
                                 :address, :city, :state, :country])
  end
end

Another way is to add the update_only option to the Users Model this way:

class User < ApplicationRecord 
  has_one :personal_info, class_name: 'PersonalInfo', dependent: :destroy
  accepts_nested_attributes_for :personal_info, update_only: true, allow_destroy: true
end

That's all.

I hope this helps