mirrors/django
1
0
Fork 0
mirror of https://github.com/django/django.git synced 2024-12-23 01:25:58 +00:00
Code Issues 25 Releases Wiki Activity

Improved formatting of deconstruct() docs.

Browse Source
This commit is contained in:
areski 2014-08-13 18:00:45 +02:00 committed by Tim Graham
parent 7f4be9cbc2
commit d441a9d006
1 changed files with 13 additions and 10 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

23
docs/topics/migrations.txt
View File

@ -560,19 +560,22 @@ Adding a deconstruct() method
You can let Django serialize your own custom class instances by giving the class
a ``deconstruct()`` method. It takes no arguments, and should return a tuple
of three things: ``(path, args, kwargs)``. Note this return value is different
from the ``deconstruct()`` method :ref:`for custom fields
<custom-field-deconstruct-method>` which returns a tuple of four items.
of three things ``(path, args, kwargs)``:
``path`` should be the Python path to the class, with the class name included as the
last part (for example, ``myapp.custom_things.MyClass``). If your class is not
available at the top level of a module it is not serializable.
* ``path`` should be the Python path to the class, with the class name included
as the last part (for example, ``myapp.custom_things.MyClass``). If your
class is not available at the top level of a module it is not serializable.
``args`` should be a list of positional arguments to pass to your class'
``__init__`` method. Everything in this list should itself be serializable.
* ``args`` should be a list of positional arguments to pass to your class'
``__init__`` method. Everything in this list should itself be serializable.
``kwargs`` should be a dict of keyword arguments to pass to your class'
``__init__`` method. Every value should itself be serializable.
* ``kwargs`` should be a dict of keyword arguments to pass to your class'
``__init__`` method. Every value should itself be serializable.
.. note::
This return value is different from the ``deconstruct()`` method
:ref:`for custom fields <custom-field-deconstruct-method>` which returns a
tuple of four items.
Django will write out the value as an instantiation of your class with the
given arguments, similar to the way it writes out references to Django fields.