Re: Theming

Russ,

Thanks for your help. I ultimately abandoned the (over-engineered) nested idea. Since we were on a tight deadline, I decided to focus only on the one page I needed customized. The template has three sections—header, body, footer. I use select_template to find the right templates to include in these sections.

The code is at https://github.com/edx/credentials/pull/210 and https://github.com/edx/credentials-themes.

Ultimately, I think I want to migrate to something similar to https://github.com/moorinteractive/wagtail-themes/. While it uses thread locals (of which I am not a fan), it ultimately allows for the entire site to be themed without having to customize every view/template.

Thanks again,

Clinton Blackburn

On Saturday, April 8, 2017 at 11:27:19 AM UTC-4, Russell Keith-Magee wrote:

Hi Clinton,

On Sat, Apr 8, 2017 at 4:05 PM, Clinton Blackburn <clinton....@gmail.com> wrote:

Russ,

How would this work for base/nested templates? Say my view is rendering the potential templates ['my-theme/page.html', 'page.html'], and the templates inherits base.html. Do I have to override base.html for every theme if I want base.html (or any other child/parent template) to be theme-able? Is there a version of {%include%} that takes an array, or will I need to write my own tag?

The template loading list (i.e., ['my-theme/page.html', 'page.html']) indicates which template will be rendered. Each of those template can, themselves, include or extend any other template they want. So, 'my-theme/page.html' could extend 'page.html', which could, in turn, extend 'base.html' - or both templates could directly extend 'base.html'. 

The argument that is passed to {% extends %} is also something that can be paramterized - so, for example, you can pass in a variable as template context that contains the "parent" template - so you could do something like having "page.html" that starts "{% extends theme %}", and then pass in {"theme": "path/to/theme.html"} as context.

The same applies to {% include %} - anywhere that you pass in a string in a template could, potentially, be a variable.

The approach that will work best depends on exactly what "theming" means in your context. 

Is it the same basic structure that just has a different style sheet? Then having a template with {% include theme %} will probably be best.

Or is it a base structure where key bits of content are different? In that case, having a my-theme/page.html that extends page.html, and using the template loader trick will probably be best.

Or are the same *pieces* on each page, but laid out differently for each user?  In that case, you probably want a page.html that starts with {% extends theme %}, so that the theme establishes basic page structure, and the page defines the blocks that are placed into that structure.

Yours,

Russ Magee %-)

 

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