before_* callbacks rollback transactions if its method returns false

10/05/16  Public, Rails Errors, Troubleshooting

I had a form, where in one of the fields, the user was clicking a drop-down menu, and choosing between one of three choices.

After the form was submitted, I had a callback that was doing something to the record.

When the user selected op...

Dealing with a LocalJumpError

06/20/16  Public, Troubleshooting, Ruby General

This is commonly caused by having return called within a block.

Here is an example. This example triggered an Airbrake error of type LocalJumpError:

task :decrement_taken_pto_...

Debugging & learning SQL in the rails console

11/19/15  Public, Databases, Troubleshooting, Other Languages

Sometimes examining the SQL generated by ActiveRecord query and finder methods can be useful in debugging and learning SQL. Rails' ActiveRecord provides the to_sql method to make this easy.

Open up the rails console with rails c or `rails c...

Using git bisect to troubleshoot

06/30/15  Public, Troubleshooting

Occasionally, something added to a gem used by one of your projects will break your application. Finding out where, when, and how it broke can be a challenge...

https://mojolingo.com/blog/2013/using-git-bisect-to-troubleshoot-ruby-gems/

See and force the hover state in Google Chrome editor

06/19/15  Public, Troubleshooting

http://stackoverflow.com/questions/4515124/see-hover-state-in-chrome-developer-tools