...notice that the records you create are not deleted and will bleed into your specs the next time you run them. You probably have DatabaseCleaner configured to take care of...
...not bloating your test database with old records: RSpec.configure do |config| config.before(:suite) do DatabaseCleaner.clean_with(:deletion) end config.before(:each) do DatabaseCleaner.strategy = :transaction end config.before(:each, transaction: false) do DatabaseCleaner.strategy...
...been released just a few days ago, allowing us to use Webpack 4. I successfully upgraded an existing real-world Webpack 3 application. Below are notes on everything that I...
Note that we prefer not using the Rails asset pipeline at all and serving all assets through Webpack for the sake of consistency. Preparations Remove version locks in Gemfile...
makandra's development process Learn about our process. The squares represent the state of the issue in Linear: In particular you should understand: Why do we have a process?
...is an issue (formerly: story)? What metrics does our process optimize for? How to divide large requirements into issues. When is an issue too small, when is it too large...
The shell variable PS1 holds your bash prompt. You might want to change it to serve your needs best. Here is how to: General non-printing escape sequences in your...
=> ✔ mycomputer ~/projects/platforms master > _ # Arne's epic timestamped prompt with return status indicator and status-colored (green if fresh, or red if unstaged, or yellow if staged) git branch:
Exercise 1: XML On the start page of your Movie DB, show the title of a random movie that is coming soon to theaters. There's an XML feed for...
...no longer a "Year" field when creating a movie. It is automatically fetched and stored before the movie is created. When editing a movie there is a "Year" field that...
...with two matchers that test for equality. The first is toBe: expect(first).toBe(second) toBe passes when first === second. Unfortunately this is useless for non-primitive values because JavaScript...
...is a horrible language. However, Jasmine comes with another matcher toEqual: expect(first).toEqual(second) This matcher behaves as a human would expect for types like the following: Arrays
Debouncing a method call delays its execution until after a specified time has passed. If it's called again before that time has passed, its execution is delayed again.
...would be run more often than it needs to. One example for that are scroll event handlers in JavaScript: You want to react to a user scrolling, but it's...
...status code 400) |_http-title: 400 The plain HTTP request was sent to HTTPS port | ssl-cert: Subject: commonName=www.makandracards.com/countryName=DE | Not valid before: 2015-10-14T12...
...Not valid after: 2016-10-14T12:42:03+00:00 |_ssl-date: 2016-08-05T11:33:52+00:00; +9d23h48m18s from local time. | tls-nextprotoneg: | h2
If you've stumbled over display: grid while reading the Flexbox material of the previous card - we've got you covered! Let's dive into this topic with a quote...
...dimensional layouts and Grid is made for two-dimensional layouts. You will learn more subtle differences in the linked material below, but you can remember this as a rule of...
Rails wraps your parameters into an interface called StrongParameters. In most cases, your form submits your data in a nested structure which goes hand in hand with the strong parameters...
...However, there are cases where this does not fit your use case, or has side effects. If you do it differently, be extra careful not to introduce security issues.
Action Mailer Basics and Previews Chapter "Task H1: Sending Mail" from Agile Web Development with Rails 7.2 (in our library) Ensure that the receiving e-mail is valid
...the Truemail gem to validate e-mail addresses Ensure that development and staging are not sending out e-mails by accident Rails: How to write custom email interceptors
With Ubuntu 24.04 it's not longer possible to setup FDE with BTRFS The new installer won't offer you any options for manually created dm-crypt volumes
...btrfs subvolume snapshot . @ rmdir @/ext2_saved ls | grep -Ev "@|ext2_saved" | xargs rm -rf btrfs subvolume set-default @ Create additional subvolumes btrfs subvolume create @home cp -ax --reflink=always @/home/* @home...
...Mocking the time zone You can't really change the local time zone of the Selenium-controlled browser. What you can do is change the time zone of the process...
...setting this from an individual test, since you don't know whether or not the Selenium-controlled browser has already launched. Note that we have only tested this with a...
I recently noticed a new kind of flaky tests on the slow free tier GitHub Action runners: Integration tests were running on smaller screen sizes than specified in the device...
...metrics. The root cause was the use of Selenium's page.driver.resize_window_to methods, which by design does not block until the resizing process has settled: We discussed this issue...
This card is a short summary on different ways of assigning multiple attributes to an instance of a class. Using positional parameters Using parameters is the default when assigning attributes...
...It works good for a small number of attributes, but becomes more difficult to read when using multiple attributes. Example: class User def initialize(salutation, first_name, last_name, street...
...Adding Records via XHR and JS Example For the following examples we use a simple data model where a user has zero or more tasks. class ExampleMigration < ActiveRecord::Migration...
...user.tasks.build } end def update load_user @user.attributes = user_params if @user.save flash[:notice] = 'User saved successfully.' redirect_to(edit_variant_1_user_path(@user)) else flash[:notice] = 'User could not...
A JavaScript error in an E2E test with Selenium will not cause your test to fail. This may cause you to miss errors in your frontend code. Using the BrowserConsole...
!!driver_logs_proc end def driver_logs_proc browser = page.driver.browser if browser.respond_to?(:logs) # selenium-webdriver >= 4 proc { browser.logs } elsif browser.respond_to?(:manage) && browser.manage.respond_to?(:logs) # selenium-webdriver...
...if you do not know. How are cookies transferred between your browser and the server? Open the development tools in your browser for this page. Can you find the cookies...
...your browser stores for makandracards? In the network tab, can you see how the cookies are transferred to or from the server? Can you log yourself out by manipulating a...
...Learn to create test data effectively using factories. Decouple tests by having each test start with an empty database and create only the records needed for the test. Learn
...with every test. In our experience the use of fixtures can make a test suite hard to work with. In any non-trivial test suite there will be thousands of...
Running rails server will start a local server that you can access via http://localhost:3000. When you are working on multiple web apps, they will likely set cookies with...
...generic names on localhost. This is annoying, since you will sign out your current user whenever you switch to another app. A better way is to use our own daho.im...
...library => Google Drive) CLI tricks every developer should know Install the tldr tool using sudo apt install tldr. You can then get usage examples for every console command, e.g. tldr...
...ssh to get examples for the ssh command. (If there are no entries, run tldr -u and try again) Exercises Basic commands Experiment and do something useful with the following...
...always is to prevent long-running queries in the first place, automatic timeouts can serve as a safety net to terminate problematic queries automatically if a set time limit is...
...statement due to statement timeout (PG::QueryCanceled)). If multiple SQL statements appear in a single simple-query message, the timeout is applied to each statement separately. Set the timeout globally...
Is your application doing something expensive every few seconds? Maybe an animated slider that rotates images? Maybe you are updating data over the network every five minutes?
...this if the your document tab is not even visible to the user. This saves your user's battery and data plan. You can ask document.visibilityState whether this tab is...
Learn to treat files as an ActiveRecord attribute type, like :string or :integer Research Look at the README for the carrierwave gem Read about Common mistakes when storing file...
...the form where we can also fill in title, year, etc. On the movie show view, render a poster version that is 400 pixel wide, with a height that respects...