Extend category_tree template tag

[Алексей Евсеев]

Hi guys,

recently i need to show only descendants categories of given category in template (i talk about oscar.apps.catalogue.models.Category). I've written my own template tag `category_tree_extended`, mostly copied from oscar's category_tree tag, with following syntax:

{% category_tree_extended [depth=n] [parent=<parent_category>] as categories %}

But i think, that it will be nice, if oscar's category_tree tag will have such functionality.

I have the code and can make a pull request.

Will it be useful?

Here are some examples:

suppose we have these categories:

    Vegetable

        Tomato

        Сucumber

    Fruit

        Сitrus

            Orange

            Lemon

        Banana

Now we can do in template:

{% category_tree parent=Fruit as tree_categories %}

tree_categories will have following categories:

        Сitrus

            Orange

            Lemon

        Banana

{% category_tree depth=1 parent=Fruit as tree_categories %}

tree_categories will have following categories:

        Сitrus

        Banana

{% category_tree as tree_categories %}

tree_categories will have following categories:

    Vegetable

        Tomato

        Сucumber

    Fruit

        Сitrus

            Orange

            Lemon

        Banana

[Valery Sorokin]

Hi Alexey

Could you share your templatetag code. It seems very usefull.

I also vote for including this in oscar.

Valery

2013/7/2 Алексей Евсеев <alexe...@gmail.com>

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[David Winterbottom]

Alexey

That looks interesting - I'd certainly be interested in a pull request.  

FYI, the category tree has been improved recently as part of #672 but solving a different problem to the one you mention.

https://github.com/tangentlabs/django-oscar/pull/672

In your example, what are you passing as the 'parent' option?  Is that a name or a category instance?  We have to be careful of i18n if passing names around - it's often better to use instances (or IDs).

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David Winterbottom
Head of Programming

Tangent Labs
84-86 Great Portland Street
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[Алексей Евсеев]

David

I wrote pseudo code in my examples above. Of course i mean a category instance, not a category name.

I've send a pull request https://github.com/tangentlabs/django-oscar/pull/741, please take a look there. Some tests are also attached.