Ability to customize date rendering

[Olivierko]

Some calendars offer the possibility to customize the rendering of of a single date by adding additional meta data such as price, availability etc.

Is this something that is planned to be implemented into cally?

[WickyNilliams]

Thanks for creating the issue. As you say it's fairly common for booking calendars. It is something I'd like to add eventually. But I think it's one of the trickier features to get right, so I've been putting it off.

Will leave this open to track the feature

[mashaal]

A modifier similar to isDateDisallowed could be helpful for this too?

isDateModified = (date) => {
  if (soldOut(date)) return "sold-out"
  if (sellingFast(date)) return "selling-fast"
}

The function could include any custom business logic required, and whatever is returned could be added to the date as a class or data-attribute?

[WickyNilliams]

@mashaal I don't think a data attribute is a good idea, because you can't style it from the outside. It's essentially inaccessible without reaching into the shadow dom, which is similar to modifying private state - inadvisable.

Maybe it could return CSS parts, then it can be easily styled. That is at pretty easy to implement and opens up arbitrary styles per date