rails select boolean

To select a boolean value in Ruby on Rails, you can follow these steps:

1. Start by defining a boolean attribute in your Rails model. For example, let's say we have a model called "User" and we want to add a boolean attribute called "admin". In your user.rb file, you would have:

class User < ApplicationRecord
  attribute :admin, :boolean
end

1. Next, you can use the select form helper in your view to create a dropdown menu for the "admin" attribute. This will allow the user to select either "true" or "false" as the value for the "admin" attribute. For example, in your form, you would have:

<%= form.select :admin, options_for_select([['True', true], ['False', false]]) %>

This will generate an HTML select element with two options: "True" and "False".

1. In your controller, you can permit the "admin" attribute to be mass-assigned. For example, in your UsersController, you would have:

def user_params
  params.require(:user).permit(:admin)
end

This will allow the "admin" attribute to be set when creating or updating a user.

1. Finally, in your controller's create or update action, you can access the value of the "admin" attribute through the params hash. For example:

def create
  @user = User.new(user_params)
  if @user.save
    # Handle successful user creation
  else
    # Handle user creation failure
  end
end

This will create a new User object with the selected value for the "admin" attribute.

These steps outline how to select a boolean value in Ruby on Rails using the select form helper and the params hash. By following these steps, you should be able to successfully implement a dropdown menu for a boolean attribute in your Rails application.