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Filter functionality

gadmfilter url variable

You can transport parts of an SQL query into the handle_request() function to apply a filter to the table view. This filter will be used when getting matching rows for the table view. To create a link with a filter on it, just assign an array the gadmfilter variable and create a link from it with the URL/ state manager class. The keys of the array determine the field and the value the rest of the where clause.
...
$afilter = array(
  "bandname" => " like 'a%'"
);
$sess->set_value("gadmfilter", $afilter);
$link = $sess->assemble();
...
Note: There are other ways no apply filters, which may override the filter you set here. Please read up filter priorities

filter block form

tbw.

table filters

tbw.

Filter priorities

tbw.