as_sql(compiler, connection, function=None, template=None, arg_joiner=None, **extra_context) [source]
Generates the SQL for the database function.
The as_vendor() methods should use the function, template, arg_joiner, and any other **extra_context parameters to customize the SQL as needed. For example:
1 2 3 4 5 6 7 8 9 10 11 | class ConcatPair(Func): ... function = 'CONCAT' ... def as_mysql(self, compiler, connection): return super(ConcatPair, self).as_sql( compiler, connection, function='CONCAT_WS', template="%(function)s('', %(expressions)s)", ) |
Changed in Django 1.10:
Support for the arg_joiner and **extra_context parameters was added.
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