CODEWITHSUNDEEP
ruby-on-rails-4boolean
Kelly
Kelly

Reputation: 469

Defining Boolean Method Ruby Beginner

Back again with a Boolean method definition question for beginners.

Here is the method I'd like to write: 

def has_booth?
end

I'm not quite sure what to pass as the argument. I want this to return true for users that have created a booth and false for those that haven't. Booths are associated with a user id and each user can has_one booth. Booths also have a name parameter.

I tried things like 

booth.id.nil?

and 

booth_id.nil?

and

booth.name.nil?

and 

booth.name != nil

and

if current_user
      if session[:booth_id]

Can you please guide me as to what I'm doing incorrectly or point me towards some literature? I have seen a bunch of tutorials for creating simple methods that have simple arguments and return or puts something on a screen, but nothing that seems to help me move the needle. I'd like to do this as correctly as possible.

If it is helpful, here is my booths controller:

class BoothsController < ApplicationController
  before_action :logged_in_user

  def index
    @booths = Booth.all
  end

  def new
    @booth = Booth.new
  end

  def create
    @booth = current_user.build_booth(booth_params)
    if @booth.save
      flash[:success] = "Congrats on opening your booth!"
      redirect_to root_url
    else
      render 'new'
    end
  end

  def show
    @user = User.find(params[:id])
    @booth = Booth.find(params[:id])
  end

  private

    def booth_params
      params.require(:booth).permit(:name)
    end
end

I appreciate any help or guidance towards a solution. Thanks!

Upvotes: 0

Views: 7204

Answers (1)

Mario P&#233;rez Alarc&#243;n
Mario P&#233;rez Alarc&#243;n

Reputation: 3638

You could use the exists? method:

Booth.exists?(user_id: id) # Return true if exists a Booth with user_id == id

Your method will look like this: 

def has_booth?(user_id)
  Booth.exists?(user_id: user_id)
end

Although, you should put that method in the User model: 

class User < ActiveRecord::Base
  has_one :booth

  def booth? # It's convention booth? instead of has_booth?
    !!self.booth
  end
end

Then in your views you could just call the method on your users:

<% if current_user.booth? %> ...

Upvotes: 1

Related Questions