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Ruby

Dave Faliskie
Dave Faliskie
17,793 Points
Posted by Dave Faliskie
Dave Faliskie
17,793 Points

Does State_Machine still work with rails 4?

I'm doing the creating user friendships in rails and I just started adding states with state_machine. I keep getting an error when I try to actually create the "friendship"

protected method around_validation called for #<StateMachine::Machine

and points to the model shown below, saying there is no method create.

def self.request(user1, user2)
    transaction do
      friendship1 = create(user: user1, friend: user2, state: 'pending')
      friendship2 = create(user: user2, friend: user1, state: 'requested')

      friendship1.send_request_email unless friendship1.new_record?
      friendship1
    end
  end

this is the controller with the create method.

def create
    if params[:user_friendship] && params[:user_friendship].has_key?(:friend_id)
      @friend = User.where(profile_name: params[:user_friendship][:friend_id]).first
      @user_friendship = UserFriendship.request(current_user, @friend)
      respond_to do |format|
        if @user_friendship.new_record?
          format.html { flash[:error] = "There was a problem."; redirect_to profile_path(@friend) }
          format.json { render json: @user_friendship.to_json, status: :precondition_failed }
        else
          format.html { flash[:success] = "Friendship created."; redirect_to profile_path(@friend) }
          format.json { render json: @user_friendship.to_json }
        end
      end
    else
      flash[:error] = "Friend required"
      redirect_to root_path
    end
  end

I believe I am doing everything correctly, unless there is something with state_machine I need to configure.

Does state_machine work with rails 4? if not how should I go about doing states?

Any input would be awesome, Thanks

2 Answers

Keith Gordon
PLUS
Keith Gordon
Courses Plus Student 93 Points
Keith Gordon
Keith Gordon
Courses Plus Student 93 Points

Instead of 

gem "state_machine"

use the updated version 

gem "state_machines"