CODEWITHSUNDEEP
ruby-on-railsrubyactiverecord
Peege151
Peege151

Reputation: 1560

Unidentified Method 'id' for nil:NilClass

I'm trying to incorporate amistad (friendship gem) and I'm having some trouble.

Here is my controller for friendship create..

def create
invitee = User.find_by_id(params[:id])
if current_user.invite invitee
  redirect_to new_friend_path, :notice => "Successfully invited friend!"
else
  redirect_to new_friend_path, :notice => "Sorry! You can't invite that user!"
end
end

I have current_user defined in a session helper (with help from Michael Hartl's tutorial) as

def current_user
remember_token = User.encrypt(cookies[:remember_token])
@current_user ||= User.find_by(remember_token: remember_token)
end

The error I am getting is pointing to this line of my controller

if current_user.invite invitee

and the error states undefined method `id' for nil:NilClass

I have also tried changing the friendship controller's create action to 

def create
invitee = User.find_by_id(params[:id])
if @current_user.invite invitee
  redirect_to new_friend_path, :notice => "Successfully invited friend!"
else
  redirect_to new_friend_path, :notice => "Sorry! You can't invite that user!"
end
end

Once I do that, it seems as though amistad's magic is forgotten, because 'invite' calls an undefined method error.

As you can tell, I'm pretty new to RoR and working on incorporating gems.

I'd appreciate any help getting this to work! Thanks, Peege

Upvotes: 0

Views: 581

Answers (2)

Kirti Thorat
Kirti Thorat

Reputation: 53018

The reason you are getting that error is because, current_user method of SessionsHelper is not getting called instead current_user is treated as a local variable.

Add include SessionsHelper in your controller class. So, current_user method would be accessible to your controller.

EDIT

params[:id] is currently nil. Change the code as below:

 <%= link_to 'Add Friend', friends_path(id: @user.id), :method =>"post", class: "btn btn-default btn-success" %>

Upvotes: 1

Chuanpin Zhu
Chuanpin Zhu

Reputation: 2256

I guess the problem is in this line:

invitee = User.find_by_id(params[:id])

post your create url, Before seeing your create request url. I can only guess: maybe there isn't id parameter, please try:

invitee = User.find(params[:user_id])

Upvotes: 1

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