When you use native smooth scrolling there is no built-in method to detect the end of the scrolling animation...
By default most exceptions in Rails will render a 500 error page and will create a new issue in your...
...same before you set a Rails.application.config.time_zone. Example User.find(123).created_at # => 2023-04-19 13:24:42.90857 +0200 User.connection.select_values("SELECT CAST(updated_at as text) FROM users WHERE...
# => ["2023-04-19 13:24:42.90857"] If those values are not the same, you will corrupt your data by configuring a time zone...
Rails offers the fresh_when method to automatically compute an ETag from the given record, array of records or scope...
By activating strict_loading you force developers to address n+1 queries by preloading all associations used in the index...
Testing your responses in Rails allows to parse the body depending on the response MIME type with parsed_body.
We will achieve this by creating a block accepting method to optionally create and then lock a .lock File of...
Since Ruby 3.2.0 you can measure coverage support for eval statements and support has been added for the simplecov gem...
SASS has an @extend keyword to inherit styles. .alert color: red &.-framed border: 1px solid red padding: 5px &.-homepage
The terraform documentation states the...
...syntax as (grouping mode*. See: Grouping-Results). But this seems not the be the whole...
In dieser Card machst du einige Übungsaufgaben um Linux Server mit Ansible zu verwalten. Da es vermutlich zu aufwendig ist...
journalctl _CMDLINE=dockerd podman journalctl SYSLOG_IDENTIFIER=podman identifying potential filter fields journalctl -o verbose journalctl -o json | jq
The change_column method for rails migrations support casting with a custom SQL statement. This allows us to change a...
Container queries enable you to apply styles to an element based on the size of the element's container. If...
When a nginx reverse proxy complains about upstreams sending too big headers, tweaking the buffers responsibly can help to prevent...
If you use a newer SSH key generated with the ED25519 algorithm instead of RSA (see Create a new SSH...
Rails partials have a lot of "hidden" features and this card describes some non-obvious usages of Rails Partials.
In the past we validate and set default values for boolean attributes in Rails and not the database itself.
Not all email clients support external images in all situations, e.g. an image within a link. In some cases, a...
Since Rails 7 you are able to encrypt database information with Active Record. Using Active Record Encryption will store an...
In Rails 5+ you can access a helper from a controller using the helpers method: # Inside a controller action
To retrieve only unique combinations of the selected attributes: You can omit rows, where all selected columns are equal with...
Das Standardtool für Monitoring auf AWS ist Cloudwatch. Du hast dir in den AWS Kapiteln Cloudwatch sicherlich schon grundsätzlich angesehen...
In diesem Kapitel lernst du wie man eine Applikation so betreibt, dass diese im Idealfall keine Ausfälle hat. Ein wichtiger...