Property | Type | Description | |
---|---|---|---|
$expr | mixed | Used expression. | |
$read_only | boolean | Expressions are always read_only. |
Method | Description | |
---|---|---|
_init ( ) | ||
getDSQLExpression ( atk\dsql\Expression $expression ) : atk\dsql\Expression | When field is used as expression, this method will be called. | |
init ( ) | Initialization. | |
useAlias ( ) : boolean | Should this field use alias? Expression fields always need alias. |
public getDSQLExpression ( atk\dsql\Expression $expression ) : atk\dsql\Expression | ||
$expression | atk\dsql\Expression | |
return | atk\dsql\Expression |
public bool $read_only | ||
return | boolean |