Introduction

To ensure a consistent code style for JavaScript code, we use ESLint. The workflow is similar to integrating rubocop for Ruby code.

1. Adding the gem to an existing code base

You can add the following lines to your package.json under devDependencies:

  "devDependencies": {
    "eslint": "^8.7.0",
    "eslint-config-standard": "^16.0.3",
    "eslint-plugin-import": "^2.25.4",
    "eslint-plugin-node"...

Building application assets with esbuild is the new way to do it, and it's great, especially in combination with Sprockets (or Propshaft on Rails 7).
You might be missing some convenience features, though.

Here we cover one specific issue:
Once you have started your development Rails server and esbuild with the --watch option (if you used jsbundling-rails to set up, you probably use bin/dev), esbuild will recompile your assets upon change, but build errors will only be printed to the terminal. Your application won't complain about them ...

You want to deploy new features but the latest commits are not ready for production? Then use git merge master~n to skip the n-last commits.

Tip

A big advantage of merging vs. cherry-picking is that cherry-picking will create copies of all picked commits. When you eventually do merge the branch after cherry-picking, you will have duplicate commit messages in your history.

Example

It's time for a production deployment!

git log --pretty=format:"%h - %s" --reverse origin/production..origin/master

0e6ab39f - Feature A
6396...

In my case [...] the catalog is an XML that contains all kinds of possible products, categories and vendors and it is updated once a month. When you read this file with the Nokogiri default (DOM) parser, it creates a tree structure with all branches and leaves. It allows you to easily navigate through it via css/xpath selectors.

The only problem is that if you read the whole file into memory, it takes a significant amount of RAM. It is really ineffective to pay for a server if you need this RAM once a month. Since I don't need to n...

The Interactive Advertising Bureau (IAB) is a European marketing association which has introduced a standard how advertising can be served to users in line with the General Data Protection Regulation (GDPR). This standard is called the TCF 2.0 (Transparency and Consent Framework). If you want to integrate any kind of advertising into a website, chances are the advertising network will require your website to implement that standard. This is a very brief overview of what this means:

The basic idea in the TCF 2.0 ...

Inspired by recent "git shortcut" cards I figured it would be nice to have one of these for rebasing a few commits onto another branch. The usual notation is prone to of-by-one errors as you have to either specify the commit before the ones you want to move or count the number of commits.

You may add this rebase-onto function to your ~/.bashrc:

function rebase-onto {
  commit=$(git log --oneline | fzf --prompt 'Select the first commit y...

git --fixup is very handy to amend a change to a previous commit. You can then autosquash your commits with git rebase -i --autosquash and git will do the magic for you and bring them in the right order. However, as git --fixup wants a ref to another commit, it is quite annoying to use since you always have to look up the sha of the commit you want to amend first.

Inspired by the [shortcut to checkout recent branches with fzf](https://makandracards.com/makandra/505126-g...

The RSpec matcher tests if two HTML fragments are equivalent. Equivalency means:

• Whitespace is ignored
• Types of attribute quotes are irrelevant
• Attribute order is irrelevant
• Comments are ignored

You use it like this:

html = ...
expect(html).to match_html(<<~HTML)
  <p>
    Expected content
  </p>  
HTML

You may override options from CompareXML by passing keyword arguments after the HTML string:

html = ...
expect(html).to match_html(<<~HTML, ignore_text_nodes: true)
 ...

If you have fzf installed, you may add an alias such as this to your ~/.bashrc:

alias recent-branch="git for-each-ref --sort=-committerdate --format='%(refname:short)' refs/heads/ |  fzf | sed 's/\* //g' | xargs -I '{}' git checkout {}"
alias rb=recent-branch

Now whenever you want to switch back and forth between your most recent branches, type recent-branch, select one and press enter.

To start a workflow manually it must have a trigger called workflow_dispatch:

---
name: Tests
on:
  push:
    branches:
    - master
  pull_request:
    branches:
    - master
  workflow_dispatch:
    branches:
    - master  

In the Actions tab of your repo you can now select a workflow and press "Run Workflow".

See GitHub documentation for details.

If you have a flaky command you can use the nick-invision/retry to re-try a failing command, optionally with a timeout:

---
...
jobs:
  test:
    ...
    steps:
    - name: Run tests
      uses: nick-invision/retry@v2
      with:
        timeout_seconds: 30
        max_attempts: 3
        command: bundle exec rake spec

6.0.0 2021-06-02

Compatible changes

• geordi commit will continue even if one of the given projects is inaccessible. It will only fail if no stories could be found at all.

Breaking changes

• Removed VNC test browser support for integration tests – Headless Chrome has
  matured and is almost a drop-in replacement. Also, key binding issues have
  increased with VNC and recent Linux.
  • Please use a headless Chrome setup https://makandracards.com/makandra/492109-capybara-running-tests-with-headless-chrome.
  • You might also ...

While renaming a file sometimes feels like "dropping its history", that is not true: Just use git log --follow on renamed files to access their full history.

Given a file "bar" that was previously named "foo":

touch foo
git add foo
git commit -m "Add foo"
mv foo bar
git add bar
git commit -m "Rename foo to bar"

git log bar

commit adc8e6a05b65355359c4e4618d6af0ed8f8b7f14 (HEAD -> git-follow)
Author: Michael Leimstaedtner <makmic@makandra.de>
Date:   Wed May 12 08:49:37 2021 +0200

    Rename foo to bar

git lo...

When deleting a record in your Rails app, Carrierwave automatically takes care of removing all associated files.
However, the file's container directory will not be removed automatically. If you delete records regularly, this may be an annoyance.

Here is a solution which was adapted from the Carrierwave GitHub wiki and cleans up any empty parent directories it can find.

class ExampleUploader < CarrierWave...

Use rules to include or exclude jobs in pipelines.

Rules are evaluated in order until the first match. When a match is found, the job is either included or excluded from the pipeline, depending on the configuration. The job can also have certain attributes added to it.

rules replaces only/except and they can’t be used together in the same job. If you configure one job to use both keywords, the linter returns a key may not be used with rules error.

GitLab 12.3 introduced rules. You can use them in your .gitlab-ci.yml in your proj...

Installing gems on a server that has no access to the internet (especially rubygems.org) requires to bundle the gems into the repository itself. This requires to adjust the bundle config in the repository.

1. Execute the following commands to configure bundler:

bundle config set --local path vendor
bundle config set --local disable_shared_gems true

Note

For Bundler < 2 you have to omit the "set": bundle config --local name value.
See here: [https://bundler.io/v1.17/man/bundle-config.1.html](https://bundler.io/v1.17/man...

If a project ist configured to spawn CI runners for tests or deployment when pushing to the Repo, a habit of pushing WIP commits regularly may conflict with that.
Here are two solutions that allow you to keep pushing whenever you feel like it.

Special commit message

To skip a CI run, simply add [ci skip] or [skip ci] to your commit message. Example:

git commit -m "wip authentication [ci skip]"

Git push options (GitLab)

In addition to that, GitLab CI supports Git push options. Instead of changing your commit message, ...

5.4.0 2021-02-01

Compatible changes

• Add geordi branch command that checks out a feature branch based on a story from Pivotal Tracker
• Faster MySQL dumping with --single-transaction and --quick
• Allow pivotal tracker ids in the global config file
• Fix missing require for Fileutils in the dump load command (#145)
• Document PARALLEL_TEST_PROCESSORS

We had the issue, that a VCR spec failed, after updating CarrierWave from version 0.11.0 to 1.3.2.
In this version, CarrierWave uses the gem SsrfFilter, which retrieves the IP addresses for the given hostname and replaces the hostname in the requested url with one of them.

It works with IPv4 addresses, but not with IPv6 addresses, because WebMock cannot handle those correctly:

uri = "#{protocol}://...

tl;dr: Upgrade the gem to at least 4.0.1

When you use rspec_rails in a version < 4 with Rails 6.1 you may encounter an error like this:

Failure/Error:
  raise WrongScopeError,
    "`#{name}` is not available from within an example (e.g. an " \
    "`it` block) or from constructs that run in the scope of an " \
    "example (e.g. `before`, `let`, etc). It is only available " \
    "on an example group (e.g. a `describe` or `context` block)."
    `name` is not available from within an example (e.g. an `it` block) or from constructs that...

A rough guide how to implement a REST API.

The discussion here includes some interesting points as well:

• Timestamps: ISO8601 format ("2021-02-22T20:34:53.686Z")
• Google API guideline: https://google.aip.dev/
• Numbers: String vs. Number

  The JSON number type is not a double. It's just a number of arbitrary size and precision in integer/decimal/E format that can be parsed as whatever the parser finds fitting.

• Pagination: Limit + Offset vs. Object ID / Pointer vs. System-Version...

If your project depends on an old version of ImageMagick that you can no longer install in your system, you can choose the run an old ImageMagick in a Docker container.

Dockerized ImageMagick commands will only work with absolute path arguments. You need to boot a corresponding docker container once before using it.

Setting up Docker

If you haven't installed Docker yet, use our guide or the [official instructions](https://docs.docker.com/get-started/...