rails-migrations

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Rails 3, generate migration with foreign key

How I can do or generate a migration with a foreign key? I have municipios table, and I want to relate with the t开发者_如何学JAVAable ciudades, the table will have these fields: nombre_id (name id),[详细]

2023-03-27 12:06 分类：问答
Rails migration: primary key id with unsigned int(10)

I want to define primary key id as below in my 开发者_开发百科tables through rails migration id INT(10) UNSIGNED NOT NULL AUTO_INCREMENT[详细]

2023-03-19 16:59 分类：问答
Creating (Dropping) Multiple Tables in One Migration

Is it possible to create (self.up) multiple tables in one rails three migration.If this is possible, what is the conventional wisdom on using such an approach.Something tells me i开发者_StackOverflow中[详细]

2023-03-19 14:24 分类：问答
Ruby on rails: rake migrate down doesn't seem to be working

I generated a migration that adds a column called encrypted_password to the users table present in my databse. This was generated automatically by rails using the command:[详细]

2023-03-19 13:37 分类：问答
What is a good way to change some hard-coded files to a active-record models?

Right now my products model has a string column of category, with the form having a select which gets its values from an array in the product model. Right now there are only three possible categories:[详细]

2023-03-19 07:13 分类：问答
Check if a table exists in Rails

I have a rake task that won\'t work unless a table exists. I\'m working with more than 20 engineers on a website so I want to make sure they have migrated the table before they can do a rake task whic[详细]

2023-03-18 01:28 分类：问答
schema.rb does not include :unique on add_index

I have the following migration: class UniqueIndexOnCustomValueKeys < ActiveRecord::Migration def self.up[详细]

2023-03-14 08:10 分类：问答
Rails Models relationships

Hello fellow developers! Recently I\'ve been playing with Rails 3.0 and after quite a bit of research I\'m kinda stuck.[详细]

2023-03-12 20:35 分类：问答
Updating migration timestamps in feature branches

Let\'s say there\'s active development in both my main branch (devlop) and my feature branch. Both are adding migrations now and again. Before merging the feature branch into the main branch, I\'m goi[详细]

2023-03-09 15:46 分类：问答
How do I move a column (with contents) to another table in a Rails migration?

I need to move some columns from one existing table to another.How do I do it using a rails migration?[详细]

2023-03-08 17:06 分类：问答