0 
class CreateAdminUsersPagesJoin < ActiveRecord::Migration[5.0]
  def up
    create_table :admin_users_pages2, :id => false  do |t|
      t.integer "admin_user_id"
      t.integer "page_id"
    end
    add_index :admin_users_pages2 ["admin_user_id", "page_id"]
  end

  def down
    drop_table :admin_users_pages2
  end
end

When i run rake db:migrate It gets aborted and gives the following error: no implicit conversion of String into Integer

Any help is appreciated.

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4
  • did you run rake db:migrate from scratch? Commented Sep 12, 2016 at 1:44
  • also what is to do with [5.0]? Commented Sep 12, 2016 at 1:48
  • 1
    Please format your question properly so that it's readable. Use the { } in the format bar to mark formatted code. Commented Sep 12, 2016 at 1:52
  • Run rake db:migrate with --trace option. rake db:migrate --trace which gives you more info on where exactly it is erroring out. Commented Sep 12, 2016 at 1:54

1 Answer 1

Reset to default
3 
class CreateAdminUsersPagesJoin < ActiveRecord::Migration[5.0]
  def up
    create_table :admin_users_pages2, :id => false  do |t|
      t.integer "admin_user_id"
      t.integer "page_id"
    end
    add_index :admin_users_pages2, ["admin_user_id", "page_id"]
  end

  def down
    drop_table :admin_users_pages2
  end
end

You had missed comma for add_index line.

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