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Demonstrate in docs how to use registered filters.

Requested by @plaes on #pocoo irc.
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commit 5a1bef4429f289eac52f8ccf57a1a8409898d489 1 parent 8ef2ca9
@rduplain rduplain authored
Showing with 7 additions and 1 deletion.
  1. +7 −1 docs/templating.rst
8 docs/templating.rst
@@ -168,7 +168,13 @@ The two following examples work the same and both reverse an object::
app.jinja_env.filters['reverse'] = reverse_filter
In case of the decorator the argument is optional if you want to use the
-function name as name of the filter.
+function name as name of the filter. Once registered, you can use the filter
+in your templates in the same way as Jinja2's builtin filters, for example if
+you have a Python list in context called `mylist`::
+ {% for x in mylist | reverse %}
+ {% endfor %}
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