exactly what does rake db:migrate do?

Posted by happythenewsad on Stack Overflow See other posts from Stack Overflow or by happythenewsad
Published on 2009-06-17T13:55:16Z Indexed on 2010/04/05 7:33 UTC
Read the original article Hit count: 136

Filed under:

rake

|

migration

|

ruby-on-rails

Does rake db:migrate only add new migrations, or does it drop all migrations/changes and build everything new?

I think rake is throwing an error because it is trying to access a table attribute in migration 040 that was deleted in migration 042. somehow my DB and rake are out of synch and I want to fix them.

for you experts out there - is it common for rake to get out of synch with migrations? how can I avoid this (no, I do not hand-edit my schema or rake files).

© Stack Overflow or respective owner

Related posts about rake

When working with gems in Rails, what does 'cannot remove Object::ClassMethods' stem from?

as seen on Stack Overflow - Search for 'Stack Overflow'
Frequently I have run into a problem when installing gems that provides a problem like: Does anyone know what this stems from? I've seen in it several different cases, yet still haven't learned what exactly is causing it. $ sudo rake gems:install --trace (in /u/app/releases/20100213003957) ** Invoke… >>> More
Why aren't the :locals hash variables being passed in to a partial, when called from inside my rake

as seen on Stack Overflow - Search for 'Stack Overflow'
I need to render a bunch of painfully long running partials using a rake task. When I try to pull the partial from a rake task, I get the dreaded "Called id for nil, which would mistakenly be 4" error, which usually means that my locals hash has not been properly set into the partial. Here's the… >>> More
mysql compatability error - rake aborted error on rake db:create

as seen on Stack Overflow - Search for 'Stack Overflow'
I'm a starter in ROR I' m using ruby 1.9.3 and rails 3.2.1 This is what appears on using rake db:create command **>rake db:create rake aborted! Please install the mysql adapter: 'gem install activerecord-mysql-adapter' <can't activate mysql <~> 2.8.1>, already activated mysql-2.9… >>> More
Having problems using haml and rails3

as seen on Stack Overflow - Search for 'Stack Overflow'
After installing rails3, I'm experiencing problems when trying to use haml with it. I have the updated gem installed, and after rails PROJECT_NAME , I did haml --rails in its root. It apparently had worked fine, since I have haml folder inside plugins, init.rb, as expected. But when I try to rake… >>> More
email-spec destroys my rake cucumber:all

as seen on Stack Overflow - Search for 'Stack Overflow'
This works fine: $ rake cucumber:all Then $ script/plugin install git://github.com/bmabey/email-spec.git remote: Counting objects: 162, done. remote: Compressing objects: 100% (130/130), done. remote: Total 162 (delta 18), reused 79 (delta 13) Receiving objects: 100% (162/162), 127.65 KiB | 15 KiB/s… >>> More

Related posts about migration

Where do I find scripts generated by SharePoint MCMS Migration Profiles

as seen on Server Fault - Search for 'Server Fault'
I am attempting to migrate data from an Microsoft Content Management Server (MCMS) 2002 instance into a new Microsoft Office Sharepoint Server (MOSS) 2007 installation using the Manage Microsoft Content Management Server Migration Profiles tool in the Operations space of MOSS Central Administration… >>> More
SQL SERVER – Microsoft SQL Server Migration Assistant V6.0 Released

as seen on SQL Authority - Search for 'SQL Authority'
Every company makes a different decision about the database when they start, but as they move forward they mature and make the decision which is based on their experience and best interest of the organization. Similarly, quite a many organizations make different decisions on database, like Sybase… >>> More
Core Data migration problem: "Persistent store migration failed, missing source managed object model

as seen on Stack Overflow - Search for 'Stack Overflow'
The Background A Cocoa Non Document Core Data project with two Managed Object Models. Model 1 stays the same. Model 2 has changed, so I want to migrate the store. I've created a new version by Design Data Model Add Model Version in Xcode. The difference between versions is a single relationship… >>> More
The Business case for Big Data

as seen on Oracle Blogs - Search for 'Oracle Blogs'
The Business Case for Big Data Part 1 What's the Big Deal Okay, so a new buzz word is emerging. It's gone beyond just a buzzword now, and I think it is going to change the landscape of retail, financial services, healthcare....everything. Let me spend a moment to talk about what i'm going to talk… >>> More
Core Data migration failing with error: Failed to save new store after first pass of migration

as seen on Stack Overflow - Search for 'Stack Overflow'
In the past I had already implemented successfully automatic migration from version 1 of my data model to version 2. Now, using SDK 3.1.3, migrating from version 2 to version 3 fails with the following error: Unresolved error Error Domain=NSCocoaErrorDomain Code=134110 UserInfo=0x5363360 "Operation… >>> More