When Rails does not recognize Rake tasks in lib/tasks
When you put a Rake task into lib/tasks, but running it fails with...
Don't know how to build task name:of:task
... does your Rake task's filename end in .rb? It needs to end in .rake instead.
Related cards:
Rails logs are not flushed automatically (in Rake tasks)
The Rails logger will store its content in a buffer and write it into the file system every 1000 lines. This will come back to bite you when using Rails.logger.info to write log output during Rake tasks or on a production console.
You often won...
Bugfix: Rails 2 does not find an association when it is named with a string instead of a symbol
Association named 'variations' was not found; perhaps you misspelled it?
I just was hunting down a strange error with this model:
class Model
placeholder = 'variations'
has_many placeholder
nested_scope :v...
How to fix: "rake db:rollback" does not work
When you run rake db:rollback and nothing happens, you are probably missing the latest migration file (or have not migrated yet).
$ rake db:rollback
$
If that happens to you, check your migration status.
$ rake db:migrate:status
...
Capistrano + Rails: Automatically skipping asset compilation when assets have not changed
In medium-sized to large Rails applications, asset compilation can take several minutes. In order to speed up deployment, asset precompilation can be skipped. This card automates the process.
Capistrano 3
namespace :de...
PSA: "index: true" in Rails migrations does not work as you'd expect
Several Rails migration methods accept index: true as an option to create an index. In some cases (like #add_column), this option is silently discarded. Know what you are doing, or use #add_index instead.
Example
Consider the following ...
How to fix: Session hash does not get updated when using "merge!"
tl;dr: Do not use merge! for session hashes. Use update instead.
Outline
Let's assume you're modifying the Rails session. For simplicity, let's also assume your session is empty when you start (same effect when there is data):
# In o...
Rails 3 ActiveRecord::Persistence#becomes does not copy changed attributes
Note: ActiveRecord::Base#becomes has a lot of quirks and inconsistent behavior. You probably want to use ActiveType.cast instead...
Some nifty Rails Rake tasks
Did you know?
rake stats # => LOC per controllers, models, helpers; code ratios, and more
rake notes # => collects TODO, FIXME and other Tags from comments and displays them
rake about # (Rails 3+) => Rails, Ruby, Rake, Rack etc. vers...
Cucumber does not find neither env.rb nor step definitions when running features in nested directories
Usually, Cucumber feature files live in features/. When you group them in sub directories, make sure to add -r features to the standard Cucumber options.
In Rails apps, Cucumber options are likely to be stored in config/cucumber.yml.
When Internet Explorer does not render webfonts on customer machines
Things to check first
- Do you deliver fonts in a format that the target IE version understands?
- Did you double-check your
@font-facedeclarations with all the hacky syntax that is required? Compare them with other decl...