Make it easier for reports to provide custom filter form implementations

Setup

1. Log in as admin
2. Navigate to Reports in user menu
3. Create two reports:
   • My first report
   • My second report
4. View list of custom reports
5. Confirm Filters button is present

Disable default filter form

1. Edit <DIRROOT>/reportbuilder/index.php
2. Add the following around line 51, immediately after $report is created:

   $report->set_filter_form_default(false);

3. The entire block should look like

   $report = system_report_factory::create(reports_list::class, context_system::instance());

   $report->set_filter_form_default(false); // <-- add this line!

   echo $report->output();

4. Reload the list of reports
5. Confirm the Filters button is not present

Apply report filters via WS

1. Inspect page DOM in browser to retrieve the system report id (the data-report-id="<SYSTEMREPORTID>" attribute), e.g.:
   
2. Open browser developer tools
3. Execute the following in the Javascript console:

   require(['core_reportbuilder/local/repository/filters'], f => f.setFilters(<SYSTEMREPORTID>, '', '{"report:name_operator":1,"report:name_value":"first"}'))

4. Reload the list of reports
5. Confirm only My first report is shown
6. Remove the $report->set_filter_form_default(false); line you added earlier in the test
7. Reload the list of reports
8. Confirm the Filters button shows (1) applied filter
9. Press the Filters (1) button
10. Confirm the Name filter is set to Contains: first