Skip to content

pyvelm.depends

depends

depends 

depends(*paths: str) -> Callable

Mark a compute method's dependencies.

Same-record fields: @depends('first_name', 'last_name'). One-hop traversal through a Many2one: @depends('country_id.name'). Multi-hop and traversal through One2many/Many2many are deferred.

The decorator just stashes the path tuple on the method; the metaclass later finds the field whose compute= names this method and copies depends_on onto the field.

Source code in pyvelm/depends.py 
 6
 7
 8
 9
10
11
12
13
14
15
16
17
18
19
20
21
22
def depends(*paths: str) -> Callable:
    """Mark a compute method's dependencies.

    Same-record fields: `@depends('first_name', 'last_name')`.
    One-hop traversal through a Many2one: `@depends('country_id.name')`.
    Multi-hop and traversal through One2many/Many2many are deferred.

    The decorator just stashes the path tuple on the method; the metaclass
    later finds the field whose `compute=` names this method and copies
    `depends_on` onto the field.
    """

    def decorator(method: Callable) -> Callable:
        method._pyvelm_depends = paths  # type: ignore[attr-defined]
        return method

    return decorator