Search moodle.org's
Developer Documentation

See Release Notes

  • Bug fixes for general core bugs in 4.0.x will end 8 May 2023 (12 months).
  • Bug fixes for security issues in 4.0.x will end 13 November 2023 (18 months).
  • PHP version: minimum PHP 7.3.0 Note: the minimum PHP version has increased since Moodle 3.10. PHP 7.4.x is also supported.
/reportbuilder/classes/local/aggregation/ -> groupconcat.php (source)

[Source view]

Differences Between: [Versions 400 and 401] [Versions 400 and 402] [Versions 400 and 403]

(no description)

File Size: 147 lines (5 kb)
Included or required:0 times
Referenced: 0 times
Includes or requires: 0 files

Defines 1 class

groupconcat:: (6 methods):
  get_name()
  compatible()
  sortable()
  get_column_field_sql()
  get_field_sql()
  format_value()


Class: groupconcat  - X-Ref

Column group concatenation aggregation type

get_name()   X-Ref
Return aggregation name

return: lang_string

compatible(int $columntype)   X-Ref
This aggregation can be performed on all non-timestamp columns

return: bool
param: int $columntype

sortable(bool $columnsortable)   X-Ref
We cannot sort this aggregation type

return: bool
param: bool $columnsortable

get_column_field_sql(array $sqlfields)   X-Ref
Override base method to ensure all SQL fields are concatenated together if there are multiple

return: string
param: array $sqlfields

get_field_sql(string $field, int $columntype)   X-Ref
Return the aggregated field SQL

return: string
param: string $field
param: int $columntype

format_value($value, array $values, array $callbacks)   X-Ref
Return formatted value for column when applying aggregation, note we need to split apart the concatenated string
and apply callbacks to each concatenated value separately

return: mixed
param: mixed $value
param: array $values
param: array $callbacks