oscarotero / simple-crud

        $table = $row->getTable();

        $scheme = $this->table->getScheme();

        if (!isset($scheme['relations'][$table->name])) {

            throw new SimpleCrudException(sprintf('The tables %s and %s are no related', $table->name, $this->table->name));

        }

        $relation = $scheme['relations'][$table->name];

        $relationTable = $row->getTable();

        $relations = $table->getScheme()['relations'];

        if (!isset($relations[$relationTable->name])) {

            throw new SimpleCrudException(sprintf('Invalid relation: %s - %s', $table->name, $relationTable->name));

        }

        $relation = $relations[$relationTable->name];

        $join = strtoupper($join);

        $scheme = $this->table->getScheme();

        if (!isset($scheme['relations'][$table])) {

            throw new SimpleCrudException(sprintf("The tables '%s' and '%s' are not related", $this->table->name, $table));

        }

        if ($scheme['relations'][$table][0] !== Scheme::HAS_ONE) {

            throw new SimpleCrudException(sprintf("Invalid %s JOIN between the tables '%s' and '%s'", $join, $this->table->name, $table));

            throw new SimpleCrudException(sprintf("The tables '%s' and '%s' are not related", $this->table->name, $table));

        }

        if ($scheme['relations'][$table][0] !== Scheme::HAS_ONE) {

            throw new SimpleCrudException(sprintf("Invalid %s JOIN between the tables '%s' and '%s'", $join, $this->table->name, $table));

        }

        if (!isset($this->join[$join])) {

            $this->join[$join] = [];