Association named 'variations' was not found; perhaps you misspelled it? I just was hunting down a strange error with this...
When you're getting this error, one possibility is that you've created a select field for an association instead...
When internationalizing your Rails app, you'll be replacing strings like 'Please enter your name' with t('.name_prompt'). You...
When you have a complex recipe setup with multistage deployment you may run into this error: `role_list_from': unknown...
The SQL code generated by Graticule's spherical distance computation is insufficient and can lead to NULL distances in edge...
Seems like a useful gem for cases where ActiveRecord is overkill but you don't want to do everything by...
I introduced DataMapper on my last two major projects. As those projects matured after I had left, they both migrated...
Using rename_column, remove_column, etc. more than once in a migration makes that migration run slower than it should...
Gem to generate entity relationship diagrams from your Rails 3 ActiveRecord models. The diagram style is pretty and configurable.
For performance improvements (and to remove the need for eager loading), the ActsAsTaggableOn gem supports caching your tag lists directly...
"Classic" Excel (XLS) has a magic limit of 65535 rows per worksheet. This was fixed in XLSX but the version...
When you have objects in your database that hold latitude and longitude and you want to find others that are...
Instead of running all missing migrations on your test database with rake db:migrate RAILS_ENV=test you can also...
Two new methods on and off are the new way of declaring event handlers. bind, delegate and live area deprecated...
There are several options, but most of them are impractical. The best way is to use the :ruby filter:
Note: This applies specifically to MySQL. In PostgreSQL for example, this is not an issue. If you care about performance...
Clearance is a gem that provides authentication functionality (e.g. login, logout). This note explains, how the clearance login, logout and...
Look here for informations how you can show the MySQL default character set. At first you need the Amazon RDS...
If you want to distribute a 's width equally over its columns, you can use the following CSS property:
To show the collation of your tables you have to login to the MySQL console and execute SHOW TABLE STATUS...
To show the MySQL default character set you have to login to the MySQL console and execute SHOW VARIABLES LIKE...
First keep in mind that :dependent => :destroy hooks into before_destroy. So when you use other before_destroy callbacks the...
Using the jQuery adapter breaks the built-in save function of CKEditor. Phenomenon: The page is submitted correctly, but the...
If you want to know the exact hits on your website (or whatever logfile you want) for a specific date...