This was brought up in #3608
@klonos
In general, these use cases is why I would like us to have a dedicated
css_classes
field introduced in the Form API. It should have a default description, so that we don't have to be re-inventing things each time we add such a field + this would allow consistency for this description throughout the UI (unless we need to specifically override it in certain cases) + would also allow translating the description only once (instead of having separate translations for each "mutation"). Not to mention validation and things like using underscores vs dashes (#3365 / #3428 /backdrop_clean_css_identifier()
).
@jenlampton
Is there an issue for this yet? I like the special validation we'd get, and consistent description text.
The following should be considered when validating CSS IDs/classes:
- Must begin with a letter, and may be followed by any number of letters or digits.
- Only hyphens, underscores, colons, and periods are allowed.
- Cannot start with a digit, two hyphens, or a hyphen followed by a digit.
Even though HTML5 is quite happy for an ID to start with a number, CSS simply doesn’t allow selectors to begin with a number.
...specifically, https://www.w3.org/TR/2003/WD-css3-syntax-20030813/#characters
In CSS3, identifiers (including element names, classes, and IDs in selectors (see [SELECT] [or is this still true])) can contain only the characters [A-Za-z0-9] and ISO 10646 characters 161 and higher, plus the hyphen (-) and the underscore (_); they cannot start with a digit or a hyphen followed by a digit. They can also contain escaped characters and any ISO 10646 character as a numeric code (see next item). For instance, the identifier "B&W?" may be written as "B\&W\?" or "B\26 W\3F". (See [UNICODE310] and [ISO10646].)
Recent comments
Hi Mike, try user/login, that should work.
Admin login - help
I wrote a blog post a while back about how the color module works, in case that is helpful. https://www.triplo.co/blog/color-module-backdrop-cms
Color module aggressive search and replace custom css color values
You are asking this question at the right time. Work has been done on the Content Moderation module for Backdrop CMS, but it's still not working fully. We would welcome help getting this...
Workflow module or equivalent?