/**
* Fetch related, foreign rows for one record's ManyToMany relationships.
* @param string $table_name
* @param string $foreign_table
* @param string $junction_table
* @param string $junction_key_left
* @param string $junction_key_right
* @param string $column_equals
* @return array Foreign rowset
*/
public function loadManyToManyRelationships($table_name, $foreign_table, $junction_table, $junction_key_left, $junction_key_right, $column_equals)
{
$foreign_table_pk = TableSchema::getTablePrimaryKey($foreign_table);
$foreign_join_column = "{$foreign_table}.{$foreign_table_pk}";
$junction_join_column = "{$junction_table}.{$junction_key_right}";
$junction_comparison_column = "{$junction_table}.{$junction_key_left}";
$junction_table_pk = TableSchema::getTablePrimaryKey($junction_table);
$junction_id_column = "{$junction_table}." . $junction_table_pk;
// Less likely name collision:
$junction_id_column_alias = "directus_junction_id_column_518d31856e131";
$junction_sort_column_alias = "directus_junction_sort_column_518d318e3f0f5";
$junctionSelectColumns = array($junction_id_column_alias => $junction_table_pk);
$sql = new Sql($this->adapter);
$select = $sql->select();
// If the Junction Table has a Sort column, do eet.
// @todo is this the most efficient way?
// @hint TableSchema#getUniqueColumnName
$junctionColumns = TableSchema::getAllNonAliasTableColumnNames($junction_table);
if (in_array('sort', $junctionColumns)) {
$junctionSelectColumns[$junction_sort_column_alias] = "sort";
$select->order($junction_sort_column_alias);
}
$select->from($foreign_table)->join($junction_table, "{$foreign_join_column} = {$junction_join_column}", $junctionSelectColumns)->where(array($junction_comparison_column => $column_equals))->order("{$junction_id_column} ASC");
// Only select the fields not on the currently authenticated user group's read field blacklist
$columns = TableSchema::getAllNonAliasTableColumnNames($foreign_table);
$select->columns($columns);
$ForeignTable = new RelationalTableGateway($this->acl, $foreign_table, $this->adapter);
$results = $ForeignTable->selectWith($select);
$results = $results->toArray();
$foreign_data = array();
$columns = TableSchema::getAllNonAliasTableColumns($foreign_table);
foreach ($results as $row) {
$row = $this->parseRecordValuesByMysqlType($row, $columns);
$junction_table_id = (int) $row[$junction_id_column_alias];
unset($row[$junction_id_column_alias]);
$entry = array($junction_table_pk => $junction_table_id);
if (in_array('sort', $junctionColumns)) {
// @TODO: check why is this a string instead of an integer.
$entry['sort'] = (int) $row[$junction_sort_column_alias];
unset($row[$junction_sort_column_alias]);
}
$entry['data'] = $row;
$foreign_data[] = $entry;
}
return array('rows' => $foreign_data);
}
/**
* Fetch related, foreign rows for one record's ManyToMany relationships.
*
* @param string $table_name
* @param string $foreign_table
* @param string $junction_table
* @param string $junction_key_left
* @param string $junction_key_right
* @param string $column_equals
* @param string $parentField
* @param int $level
*
* @return array Foreign rowset
*/
public function loadManyToManyRelationships($table_name, $foreign_table, $junction_table, $junction_key_left, $junction_key_right, $column_equals, $parentField = null, $level = 0)
{
$foreign_table_pk = TableSchema::getTablePrimaryKey($foreign_table);
$foreign_join_column = $foreign_table . '.' . $foreign_table_pk;
$junction_join_column = $junction_table . '.' . $junction_key_right;
$junction_comparison_column = $junction_table . '.' . $junction_key_left;
// =============================================================================
// HOTFIX: prevent infinite circle loop
// =============================================================================
if ($parentField && $this->hasToManyCallStack($parentField, $foreign_table)) {
return $column_equals;
}
if ($parentField !== null) {
$this->addToManyCallStack($level, $parentField, $foreign_table);
}
$junction_table_pk = TableSchema::getTablePrimaryKey($junction_table);
$junction_id_column = $junction_table . '.' . $junction_table_pk;
// Less likely name collision:
$junction_id_column_alias = 'directus_junction_id_column_518d31856e131';
$junction_sort_column_alias = 'directus_junction_sort_column_518d318e3f0f5';
$junctionSelectColumns = [$junction_id_column_alias => $junction_table_pk];
$sql = new Sql($this->adapter);
$select = $sql->select();
// If the Junction Table has a Sort column, do eet.
// @todo is this the most efficient way?
// @hint TableSchema#getUniqueColumnName
$junctionColumns = TableSchema::getAllNonAliasTableColumnNames($junction_table);
if (in_array('sort', $junctionColumns)) {
$junctionSelectColumns[$junction_sort_column_alias] = 'sort';
$select->order($junction_sort_column_alias);
}
$select->from($foreign_table)->join($junction_table, $foreign_join_column . '=' . $junction_join_column, $junctionSelectColumns)->where([$junction_comparison_column => $column_equals])->order($junction_id_column . ' ASC');
// Only select the fields not on the currently authenticated user group's read field blacklist
$columns = TableSchema::getAllNonAliasTableColumnNames($foreign_table);
$select->columns($columns);
$ForeignTable = new RelationalTableGateway($this->acl, $foreign_table, $this->adapter);
$results = $ForeignTable->selectWith($select);
$results = $results->toArray();
$foreign_data = [];
$columns = TableSchema::getAllNonAliasTableColumns($foreign_table);
foreach ($results as $row) {
$row = $recordData = SchemaManager::parseRecordValuesByType($row, $columns);
$junction_table_id = (int) $row[$junction_id_column_alias];
unset($row[$junction_id_column_alias]);
$entry = [$junction_table_pk => $junction_table_id];
if (in_array('sort', $junctionColumns)) {
// @TODO: check why is this a string instead of an integer.
$entry['sort'] = (int) $row[$junction_sort_column_alias];
unset($row[$junction_sort_column_alias]);
}
$schemaArray = TableSchema::getSchemaArray($foreign_table);
$alias_fields = $this->filterSchemaAliasFields($schemaArray);
// (fmrly $alias_schema)
$row = $this->loadToManyRelationships($row, $alias_fields, $parentField, $level + 1);
$entry['data'] = $row;
$foreign_data[] = $entry;
}
return ['rows' => $foreign_data];
}