/**
* Save fields for many-to-many relations in their pivot tables.
*
* @param F0FTable $table Current item table.
*
* @return bool True if the object can be saved successfully, false elsewhere.
* @throws Exception The error message get trying to save fields into the pivot tables.
*/
public function onAfterStore(&$table)
{
// Retrieve the relations configured for this table
$input = new F0FInput();
$key = $table->getConfigProviderKey() . '.relations';
$relations = $table->getConfigProvider()->get($key, array());
// Abandon the process if not a save task
if (!in_array($input->getWord('task'), array('apply', 'save', 'savenew'))) {
return true;
}
// For each relation check relative field
foreach ($relations as $relation) {
// Only if it is a multiple relation, sure!
if ($relation['type'] == 'multiple') {
// Retrive the fully qualified relation data from F0FTableRelations object
$relation = array_merge(array('itemName' => $relation['itemName']), $table->getRelations()->getRelation($relation['itemName'], $relation['type']));
// Deduce the name of the field used in the form
$field_name = F0FInflector::pluralize($relation['itemName']);
// If field exists we catch its values!
$field_values = $input->get($field_name, array(), 'array');
// If the field exists, build the correct pivot couple objects
$new_couples = array();
foreach ($field_values as $value) {
$new_couples[] = array($relation['ourPivotKey'] => $table->getId(), $relation['theirPivotKey'] => $value);
}
// Find existent relations in the pivot table
$query = $table->getDbo()->getQuery(true)->select($relation['ourPivotKey'] . ', ' . $relation['theirPivotKey'])->from($relation['pivotTable'])->where($relation['ourPivotKey'] . ' = ' . $table->getId());
$existent_couples = $table->getDbo()->setQuery($query)->loadAssocList();
// Find new couples and create its
foreach ($new_couples as $couple) {
if (!in_array($couple, $existent_couples)) {
$query = $table->getDbo()->getQuery(true)->insert($relation['pivotTable'])->columns($relation['ourPivotKey'] . ', ' . $relation['theirPivotKey'])->values($couple[$relation['ourPivotKey']] . ', ' . $couple[$relation['theirPivotKey']]);
// Use database to create the new record
if (!$table->getDbo()->setQuery($query)->execute()) {
throw new Exception('Can\'t create the relation for the ' . $relation['pivotTable'] . ' table');
}
}
}
// Now find the couples no more present, that will be deleted
foreach ($existent_couples as $couple) {
if (!in_array($couple, $new_couples)) {
$query = $table->getDbo()->getQuery(true)->delete($relation['pivotTable'])->where($relation['ourPivotKey'] . ' = ' . $couple[$relation['ourPivotKey']])->where($relation['theirPivotKey'] . ' = ' . $couple[$relation['theirPivotKey']]);
// Use database to create the new record
if (!$table->getDbo()->setQuery($query)->execute()) {
throw new Exception('Can\'t delete the relation for the ' . $relation['pivotTable'] . ' table');
}
}
}
}
}
return true;
}
