An easy way to create custom template tags for Django's templating system.
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Usage
Just subclass the EasyNode and create the method render_context and register the template tag:
from django.template import Library from easytags.node import EasyNode register = Library() class SumNode(EasyNode): def render_context(self, context, arg1, arg2, arg3=0): return int(arg1) + int(arg2) + int(arg3) register.tag('sum', SumNode.parse)
EasyNode will take care of the template tag’s parsing, resolving variable and inspecting if the args are ok with the render_context signature. In the example above, you can use the sum tag in any of the forms below:
{% sum "1" "2" %} {% sum "1" arg2="2" %} {% sum arg1="1" arg2="2" %} {% sum arg2="2" arg1="1" %}
It’s almost like calling methods in Python.
In this example, arg3 is optional and defaults to 0. So you may use or not this arg.
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