The group concatenation types now consistently sort the returned values
and support aggregating columns containing multiple fields and those
with defined callbacks.
Refinements to how columns can be defined in relation to available
aggregation methods:
* Disable aggregation types;
* Set column GROUP BY during aggregation;
* Defer column sorting to that of the aggregation method
Implement UI elements for editing columns of a report, taking their
definitions from the selected datasource.
Co-authored-By: David Matamoros <davidmc@moodle.com>
Co-authored-By: Mikel Martín <mikel@moodle.com>
The column class encapsulates all data related to a report column. It
allows developers to define the type of data contained within it, in
addition to how that data is retrieved and formatted for users.
Report actions are used to define action elements that are added to
each report row. They define an icon and link, and can be used to
direct users to related pages according to the current row data.
Marina Glancy