Supporting keyword arguments for sort filter

[patrickarlt]

Yesterday I ran into an issue trying to use some of Nunjucks builtin filters

According to the Jinja docs the sort filter is able to accept keyword arguments for sorting arrays of objects

{% for post in posts|sort(attribute="date") %}
  <h3>{{ post.title }} <small>{{post.date}}</small></h3>
{% endfor %}

Which simply leaves the array of blog posts unsorted. Taking a quick look at the tests for sort it looks like filters don't support keyword arguments but this does work ...

{% for post in blog|sort(false, false, "title") %}
  <h3>{{ post.title }} <small>{{post.date}}</small></h3>
{% endfor %}

So my question is should the built in filters be documented in the Nunjucks site (rather then just linking to Jinja) I could move all the docs easily. Or should filters be modified to accept keyword arguments?

[ArmorDarks]

probably code should be updated to correspond latest Jinja changes regarding sort keywords

[jlongster]

We've been meaning to document our filters and not rely on jinja's documentation. If someone wants to start that work, that would be great. And yes, we could probably improve sort by using keyword arguments (support already exists)