CODEWITHSUNDEEP
ruby-on-railsdevise
LaurentL
LaurentL

Reputation: 213

unknown attribute `user_id'

I'm trying to associate my users that I created with Devise to the posts . But I am getting the error mentioned int the title whenever I try to create a post logged in as a user. Thank you very much :)

 class PostsController < ApplicationController
  def index
    @posts = Post.all
  end

  def new
    @post = Post.new
  end

  def create
    @post = Post.new(params.require(:post).permit(:task))
    @post.user = current_user
    if @post.save
        redirect_to @post, alert:"Post created successfully."
    else
        redirect_to new_post_path, alert: "Error creating post."
    end
  end

  def show
    @post = Post.find(params[:id])
  end

end

The user model

class User < ActiveRecord::Base

  devise :database_authenticatable, :registerable,
         :recoverable, :rememberable, :trackable, :validatable

  has_many :posts
end

Post model

class Post < ActiveRecord::Base

validates_presence_of :task
belongs_to :user

end

Upvotes: 3

Views: 5661

Answers (6)

Sebasti&#225;n Echeverr&#237;a
Sebasti&#225;n Echeverr&#237;a

Reputation: 37

Actually when you want to add an index that corresponds to an association you havo to create a migration using, in this case:

rails g migration AddUserIdToPin user:references

Rails will immediately know that you want to include an index onto the second table using the User Id unique, primary, key.

Hope this helps!.

Upvotes: 1

Ishtiaque05
Ishtiaque05

Reputation: 451

Look into you schema.rb and under post table can you seen the user_id column. If there is no user_id you need to add a migration column to add user_id using the following command:

rails generate migration add_user_id_to_posts user_id: integer

Using this command a migration file name 20171220171727_add_user_id_to_posts.rb will be created. For you the time stamp 20141220171727 will be different. In the migration file you will see you have the following code:

class AddUserIdToPosts < ActiveRecord::Migration
  def change
   add_column :posts, 'user_id', :integer
  end
end

If your migration looks like the above then run:

rake db:migrate

to apply the migration. Restart the server now and see if your code works or not.

Upvotes: 1

domdaviesdev
domdaviesdev

Reputation: 89

For adding user id to pin the following worked for me

rails g migration add_user_to_pin user_id:integer

Upvotes: 3

Chris Valentine
Chris Valentine

Reputation: 1637

I just did this same stuff. Mine works this way for me.

I do have a user_id column in my posts table. I verified by doing this in rails console (rails c)

Post.column_names

Which returned all the fields, and user_id was among them.

in my Post model it belongs_to :user, and in my User model it has_many :posts.

In my PostsController though, mine differs from yours.

I have 

@post = Post.new(post_params)
@post.user_id = current_user.id

Which seems to work just fine. This was also written after I implemented Devise for the user

Upvotes: 0

1andsock
1andsock

Reputation: 1567

In your create action, try something like:

def create
  @post = Post.new(params.require(:post).permit(:task))
  @post.user_id = current_user.id
  if @post.save
    redirect_to @post, alert:"Post created successfully."
  else
    redirect_to new_post_path, alert: "Error creating post."
  end
end

and also make sure in your Posts database table that you have an integer field called user_id

Upvotes: 0

Mohamed El Mahallawy
Mohamed El Mahallawy

Reputation: 13882

You probably don't have a user_id column on your Posts table in your db.

Upvotes: 2

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