CODEWITHSUNDEEP
ruby-on-railsrubyruby-on-rails-5
Çağatay Karahan
Çağatay Karahan

Reputation: 55

RoR Active Records undefined method

I created 2 models User and Server but when I tried to add a data to Server I cannot get the result that I want. When I tried this on Rails Console I am not getting any errors. This is making my head crazy for 2 days now. Tried lots of things.

user.rb

class User < ApplicationRecord
   belongs_to :server
end

User Migration

class CreateUsers < ActiveRecord::Migration[5.0]
  def change
    create_table :users do |t|
      t.integer :channel_id
      t.timestamps

    end
  end
end

server.rb

class Server < ApplicationRecord
has_many :user
end

Server Migration

class CreateServers < ActiveRecord::Migration[5.0]
  def change
    create_table :servers do |t|
      t.string :name
      t.timestamps
    end
  end
end

My Controller:

def alert(args)
 @server =  Server.where(name: args)
   if @server == []
     Server.create(name: args)
     respond_with :message, text: t('.bildirim_on')
   else
   end
     @user = @server.user.create(channel_id: 215682104)
end

I am getting this error:

  Server Load (0.1ms)  SELECT "servers".* FROM "servers" WHERE "servers"."name" = ?  [["name", "videoyun"]]
Completed in 28ms (ActiveRecord: 0.8ms)
undefined method `user' for #<Server::ActiveRecord_Relation:0x00000004dae158>

Upvotes: 0

Views: 73

Answers (2)

at0misk
at0misk

Reputation: 76

class Server < ApplicationRecord
 has_many :user
end

:user should be :users

Upvotes: 0

fedebns
fedebns

Reputation: 494

That's because @server is an ActiveRecord_Relationship, not a Server instance. You should use Server.find_by(name: args) and check if is .present? before creating it (it will return a Server instance or nil, instead of an ActiveRecord Relationship).

Also you should assign to @server the new one within the if statement.

Upvotes: 3

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