在Django模板中使用双星号运算符

Question

I'd like to provide some extra templates for my base template to include, just like the following code:

views :

def my_view(request):
    extra_templates=[
        {'path': 'dashboard/timewindow.html'},
        {'path': 'dashboard/search_box.html'},
    ]
    context = {'extras': extra_templates}
    return render(request, 'dashboard/base.html', context)

base.html

{% for extra_template in extras %}
  {% include extra_template.path %}
{% endfor %}

I think this can be more powerful, if I can also provide some keyword arguments and use them as context when rendering the extra templates, but I couldn't do it, the following code doesn't work :

views :

def my_view(request):
    extra_templates=[
        {'path': 'dashboard/timewindow.html', 'context': {'var': 23}},
        {'path': 'dashboard/search_box.html'},
    ]
    context = {'extras': extra_templates}
    return render(request, 'dashboard/base.html', context)

base.html

{% for extra_template in extras %}
  {% include extra_template.path with extra_template.context %}
{% endfor %}

If I could use something like the ** operator inside a django template, that would allow some very awesome code reusage.

Answer 1

First, You can not use double asterisks in include tag. include tag's with parameter only understands foo=1 or 1 as foo notations.

So, you have three options:

1) Included template will have all variables available from top level template. Main con: timewindow.html and search_box.html can't have same variable with different values.

def my_view(request):
    extra_templates=[
        {'path': 'dashboard/timewindow.html'},
        {'path': 'dashboard/search_box.html'},
    ]
    context = {'extras': extra_templates, 'var': 23}
    return render(request, 'dashboard/base.html', context)

2) Use prefix

{# parent template #}
{% for extra_template in extras %}
    {% include extra_template.path with extra=extra_template.context %}
{% endfor %}

{# included template #}
{{ extra.var }}

3) Write custom template tag and expand context by yourself