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| author | Étienne Pelletier <EtiennePelletier@users.noreply.github.com> | 2019-05-08 10:47:33 -0400 |
|---|---|---|
| committer | David Lord <davidism@gmail.com> | 2019-05-08 10:47:33 -0400 |
| commit | 19133d40593ced72eb28e230588abcc70d8b9f82 (patch) | |
| tree | a92f5b265e9508c4ab6f5a197b3a391e7e35b281 /docs | |
| parent | 9766c179fad831aa6aa2039882fadc7aff6bba2d (diff) | |
| download | jinja-19133d40593ced72eb28e230588abcc70d8b9f82.tar.gz | |
Add ChainableUndefined allowing getattr & getitem (#997)
* Add ChainableUndefined allowing getattr & getitem
Allows using default values with chains of items or attributes that may
contain undefined values without raising a jinja2.exceptions.UndefinedError.
>>> import jinja2
>>> env = jinja2.Environment(undefined=jinja2.ChainableUndefined)
>>> env.from_string("{{ foo.bar['baz'] | default('val') }}").render()
'val'
* Remove class decorator from ChainableUndefined
Diffstat (limited to 'docs')
| -rw-r--r-- | docs/api.rst | 4 |
1 files changed, 3 insertions, 1 deletions
diff --git a/docs/api.rst b/docs/api.rst index ff0e3b21..8672a42c 100644 --- a/docs/api.rst +++ b/docs/api.rst @@ -322,7 +322,7 @@ unable to look up a name or access an attribute one of those objects is created and returned. Some operations on undefined values are then allowed, others fail. -The closest to regular Python behavior is the `StrictUndefined` which +The closest to regular Python behavior is the :class:`StrictUndefined` which disallows all operations beside testing if it's an undefined object. .. autoclass:: jinja2.Undefined() @@ -353,6 +353,8 @@ disallows all operations beside testing if it's an undefined object. :attr:`_undefined_exception` with an error message generated from the undefined hints stored on the undefined object. +.. autoclass:: jinja2.ChainableUndefined() + .. autoclass:: jinja2.DebugUndefined() .. autoclass:: jinja2.StrictUndefined() |