How could it be that my database.yml disappears?
Probably was in the repository once and got deleted in a commit that you pulled.
Related cards:
ActiveRecord::RecordNotFound errors allow you to query the :name and :id of the model that could not be found
ActiveRecord::RecordNotFound errors provide quite meaningful error messages that can provide some insight on application details. Consider the following:
ActiveRecord::RecordNotFound: Couldn't find Organisation::Membership with 'id'=12 [WHE...
IRB's multi-line autocomplete and how to disable it
Recent IRB versions include a multi-line autocomplete which may be helpful to novice users but can be distracting.
Cycling through options works by pressing the Tab key (as usual), and for some methods you also get some kind of documentation, tho...
How to make sure that manual deploy tasks (scheduled in Pivotal Tracker) are executed on deploy (with Capistrano)
We regularly have tasks that need to be performed around a deploy. Be it to notify operations about changed application behavior, be it to run a little oneline script after the deploy. Most database-related stuff can be handled by migrations, but ...
NPM: How to verify that your package-lock.json fulfills dependencies of package.json
Your package-lock.json should always match and resolve all packages from your package.json.
Coming from Yarn, I was looking for an option like Yarn's --frozen-lockfile which validates that. Here is what seems to be the way to do it.
Usin...
How to resize your boot partition when there is an encrypted partition after it
Boot partitions from installations prior to the 16.04 era are terribly small. When you install updates and encounter errors due to a full /boot partition, consider risizing it.
If you can't do the steps described below, ask someone experienced ...
Git: How to check out branches that exist on multiple remotes
So you're using multiple remotes that offer the same branch?
$ git branch -a | grep my-branch
remotes/something/my-branch
remotes/origin/my-branch
And when trying to check out that remote branch, it fails for you with an error li...
RSpec: Ensuring a method is called on an object that will be created in the future
rspec >= 3.1 brings a method and_wrap_original. It seems a bit complicated at first, but there are use cases where it helps to write precise tests. For example it allows to add expectations on objects that will only be created when your code is ...
How Haml 6 changes attribute rendering, and what to do about it
Haml 6 was a major rewrite with performance in mind. To achieve a performance improvement of 1.7x, some design trade-offs had to be made. The most notable change might be the simplifie...
Best practices: Writing a Rails script (and how to test it)
A Rails script lives in lib/scripts and is run with bin/rails runner lib/scripts/.... They are a simple tool to perform some one-time actions on your Rails application. A Rails script has a few advantages over pasting some prepared code into a R...
When sessions, cookies and Clearance tokens expire and how to change it
Expiration of Rails sessions
By default Rails sessions expire when the user closes her browser window.
To change this edit your config/initializers/session_store.rb like this:
ActionController::Base.session = ...