/**
* Removes a field from a model. Usually involves deleting a column, but for M2Ms may involve deleting a table.
*
* @param Model $model
* @param Field $field
*
* @since 1.1.0
*
* @author Eddilbert Macharia (http://eddmash.com) <*****@*****.**>
*/
public function removeField($model, $field)
{
$schema = $this->schemaManager->createSchema();
// Special-case implicit M2M tables
if ($field->manyToMany && $field->relation->through->meta->autoCreated) {
$this->deleteModel($field->relation->through);
return;
}
$type = $field->dbType($this->connection);
$name = $field->getColumnName();
$fieldOptions = $this->getDoctrineColumnOptions($field);
// It might not actually have a column behind it
if (empty($type)) {
return;
}
$table = $model->meta->dbTable;
$tableDef = clone $schema->getTable($table);
// Drop any FK constraints, MySQL requires explicit deletion
if ($field->isRelation && $field->relation !== null) {
foreach ($this->constraintName($table, $name, ['foreignKey' => true]) as $fkConstraint) {
$tableDef->removeForeignKey($fkConstraint);
}
}
// remove column
$tableDef->dropColumn($name);
$comparator = new Comparator();
$diff = $comparator->diffTable($schema->getTable($table), $tableDef);
if ($diff !== false) {
$this->schemaManager->alterTable($diff);
}
}
