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<?php |
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namespace Backpack\CRUD\app\Models\Traits; |
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use DB; |
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use Illuminate\Database\Eloquent\Model; |
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use \Backpack\CRUD\app\Library\CrudPanel\CrudPanelFacade as CRUD; |
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/* |
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|-------------------------------------------------------------------------- |
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| Methods for working with relationships inside select/relationship fields. |
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|-------------------------------------------------------------------------- |
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*/ |
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trait HasRelationshipFields |
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{ |
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/** |
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* Register aditional types in doctrine schema manager for the current connection. |
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* |
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* @return DB |
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*/ |
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public function getConnectionWithExtraTypeMappings() |
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{ |
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$conn = DB::connection($this->getConnectionName()); |
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// register the enum, json and jsonb column type, because Doctrine doesn't support it |
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$conn->getDoctrineSchemaManager()->getDatabasePlatform()->registerDoctrineTypeMapping('enum', 'string'); |
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$conn->getDoctrineSchemaManager()->getDatabasePlatform()->registerDoctrineTypeMapping('json', 'json_array'); |
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$conn->getDoctrineSchemaManager()->getDatabasePlatform()->registerDoctrineTypeMapping('jsonb', 'json_array'); |
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return $conn; |
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} |
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/** |
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* Get the model's table name, with the prefix added from the configuration file. |
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* |
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* @return string Table name with prefix |
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*/ |
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public function getTableWithPrefix() |
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{ |
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$prefix = $this->getConnection()->getTablePrefix(); |
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$tableName = $this->getTable(); |
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return $prefix.$tableName; |
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} |
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/** |
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* Get the column type for a certain db column. |
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* |
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* @param string $columnName Name of the column in the db table. |
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* @return string Db column type. |
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*/ |
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public function getColumnType($columnName) |
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{ |
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$conn = $this->getConnectionWithExtraTypeMappings(); |
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$table = $this->getTableWithPrefix(); |
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return $conn->getSchemaBuilder()->getColumnType($table, $columnName); |
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} |
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/** |
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* Checks if the given column name is nullable. |
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* |
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* @param string $column_name The name of the db column. |
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* @return bool |
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*/ |
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public static function isColumnNullable($column_name) |
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{ |
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// create an instance of the model to be able to get the table name |
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$instance = new static(); |
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$conn = $instance->getConnectionWithExtraTypeMappings(); |
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$table = $instance->getTableWithPrefix(); |
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// MongoDB columns are alway nullable |
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if (!in_array($conn->getConfig()['driver'], CRUD::getSqlDriverList()) { |
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return true; |
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} |
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try { |
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// check if the column exists in the database |
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$column = $conn->getDoctrineColumn($table, $column_name); |
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// check for NOT NULL |
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$notNull = $column->getNotnull(); |
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// return the value of nullable (aka the inverse of NOT NULL) |
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return ! $notNull; |
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} catch (\Exception $e) { |
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return true; |
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} |
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} |
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} |
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Laravel-Backpack /
CRUD
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