CODEWITHSUNDEEP
ruby-on-railsruby-on-rails-4
jordancolbycox
jordancolbycox

Reputation: 538

How to parse a parameter in a URI for use in a controller?

I want to be able to use the ID present in the route post 'users/:id/contacts/create' => 'contacts#create'. I am trying to parse the ID by params[:id]. As shown below, in my contact controller:

      def create
    @contact = Contact.new(contact_params)
    if @contact.save
      render json: @contact, status: :created, location: @contact
    else
      render json: @contact.errors, status: :unprocessable_entity
    end
  end

The contact params function is:

    def contact_params
  params.require(:contact).permit( :name, :email, :phone, :user_id=>params[:id])
end

However, when I am posting the data, the :user_id is returning as null.

Upvotes: 0

Views: 82

Answers (2)

Yang
Yang

Reputation: 1923

Please try this:

def contact_params
  params[:contact][:user_id] = params[:id]
  params.require(:contact).permit( :name, :email, :phone, :user_id )
end

Upvotes: 2

Abs
Abs

Reputation: 3962

Maybe you want to change the id parameter route to nested because it is not the primary object/resource of the ContactsController

resources :users do
  resources :contacts, as: 'users_contacts'
end

Then run bundle exec rake routes CONTROLLER=users

Should print how its setup.

I think your parameters should then appear as you want them 

 params.require(:contact).permit( :name, :email, :phone, :user_id)

Remember you also want to do this so as to follow the rails way. Any deviation from standard way will make things complex unnecessarily in future.

As a suggestion try generating a default scaffold controller with routes done like that.

rails g scaffold_controller Contacts

That should have this object saved via post in the code and a sneak peak at the parameters.

Hope it helps.

Upvotes: 1

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