mirror of
https://github.com/ets-labs/python-dependency-injector.git
synced 2024-11-23 10:03:56 +03:00
26 lines
886 B
ReStructuredText
26 lines
886 B
ReStructuredText
Writing catalogs
|
|
----------------
|
|
|
|
Catalogs have to extend base catalog class ``di.AbstractCatalog``.
|
|
|
|
Providers have to be defined like catalog's attributes. Every provider in
|
|
catalog has name. This name should follow ``some_provider`` convention,
|
|
that is standard naming convention for attribute names in Python.
|
|
|
|
.. note::
|
|
|
|
It might be useful to add such ``""":type: di.Provider -> Object1"""``
|
|
docstrings just on the next line after provider's definition. It will
|
|
help code analyzing tools and IDE's to understand that variable above
|
|
contains some callable object, that returns particular instance as a
|
|
result of its call.
|
|
|
|
Here is an simple example of catalog with several factories:
|
|
|
|
.. image:: /images/catalogs/writing_catalogs.png
|
|
:width: 85%
|
|
:align: center
|
|
|
|
.. literalinclude:: ../../examples/catalogs/writing_catalogs.py
|
|
:language: python
|