Django 2 by Example

Creating custom template filters

Django has a variety of built-in template filters that allow you to modify variables in templates. These are Python functions that take one or two parameters—the value of the variable it's being applied to, and an optional argument. They return a value that can be displayed or treated by another filter. A filter looks like {{ variable|my_filter }}. Filters with an argument look like {{ variable|my_filter:"foo" }}. You can apply as many filters as you like to a variable, for example, {{ variable|filter1|filter2 }}, and each of them will be applied to the output generated by the preceding filter.

We will create a custom filter to be able to use markdown syntax in our blog posts and then convert the post contents ...