Activerecord Migration Index Exists

I’m not sure why I’m unable to checkout a branch that I had worked on earlier. See the commands below (note: co is an alias for checkout): [email protected]

Releases | Riding Rails – As always, huge thanks to the many contributors who helped with this release. Webpacker 3.0: No separate process needed, less config generated

NOTE: This tutorial is for RoR 2. If you’re using RoR 3, please see additional details here. We’ve also posted an updated tutorial for Ruby on Rails 4.

You can specify the index name in your migration. add_index :users, :email, unique: true, name: 'my_index_name'.

Active Record Migrations. Migrations. After, the table will exist. Active Record. This migration will create a user_id column and appropriate index. For more.

136 comments to Using the FOR command to copy files listed in a text file

Rails Migrations: Check Existence and Keep Going? – Stack Overflow – Oct 29, 2009. For Rails 2.X, you can check the existence of columns with the following: columns ("[table-name]").index {|col| == "[column-name]"}.

Postgres Sched_migration_cost Oracle To Sql Server Migration Using Ssis Hi Friends, Now my company planing to migrate legacy Oracle database to SQL Server 2005 using SSIS. can anybody suggest how migrate Oracle to SQL Server. May 4, 2017. Discover how you can migrate your Oracle database to SQL Server by yourself using our automatic solution accompanied by

The Basics of Web Application Security. Modern web development has many challenges, and of those security is both very important and often under-emphasized.

Aug 22, 2014. class AddIndexToUsers < ActiveRecord::Migration def change remove_index : users, :id_number if index_exists?(:id_number) add_index :users.

Getting Started with Rails. This guide covers getting up and running with Ruby on Rails. After reading this guide, you will know: How to install Rails, create a new.

Feb 7, 2015. There is an index_exists? method on one of the ActiveRecord. It's worth noting, however, that this only returns true if an index exists that.

index_exists? (ActiveRecord::ConnectionAdapters. – APIdock – suppliers, :company_id) # Check an index on multiple columns exists index_exists?(:suppliers, [:company_id, :company_type]) # Check a unique index exists.