rails-migrations

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Generate Rails migrations from a schema

I am creating a new Rails application which will work with an e开发者_JS百科xisting schema. I have been given the schema SQL but I want to create Rails migrations to populate the database in developme[详细]

2023-02-21 12:06 分类：问答
How to create a new migrate in rails 3

How can I开发者_Python百科 create a new migration in rails 3?rails g migration <migrationname>[详细]

2023-02-21 06:19 分类：问答
Why did I get an ActiveRecord::Relation object?

I tried to get a car instance from database, theCar = Car.where(:name => \'TOYOTA\') puts theCar.user_name[详细]

2023-02-21 00:56 分类：问答
How to insert two associated instances in to corresponding tables by using a Migration?

I have two ActiveRecode model, Car and User, which has many-to-one association: class Car < ActiveRecord::Base[详细]

2023-02-20 19:26 分类：问答
rails3 migration to add new column does not save values to table

So, I created the following migration: class AddAclToUsers < ActiveRecord::Migration def self.up add_column :users, :acl, :integer[详细]

2023-02-19 23:13 分类：问答
Setting up MYSQL with the latest version of Ruby on Rails

I am a total ruby on rails noob, and I have been trying to follow Lynda.com\'s ruby on rails 3 essential training. However, this was made when mysql was the default database, and somehow since then th[详细]

2023-02-18 00:06 分类：问答
rails model relationship and migration

I have some problem trying to understand when building a rails app with several models and relation ships between them...[详细]

2023-02-16 21:15 分类：问答
How to make Rails migration conditional on current RAILS_ENV?

How do you make a Rails migration conditional on the current RAILS_ENV? Specifically, I want to: Check a migration into head-of-master[详细]

2023-02-14 17:45 分类：问答
Create migration from application

I want to create migrations to add columns from my rails application (not through rails g migration xxxx), while creating the migration I want to store the version number to the for the migration for[详细]

2023-02-14 16:03 分类：问答
Rails - authoritative source for your database schema?

I have Rails app, and every once in a while, when I bring new developer onboard they exclaim that they should be able to produce the current DB schema in their dev environment by running the whole his[详细]

2023-02-10 22:26 分类：问答