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views.py
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views.py
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from django.views.generic.base import TemplateView, TemplateResponseMixin
from block_render import render_template_block
from django.template.response import TemplateResponse
class BlockAwareTemplateResponse(TemplateResponse):
'''
A subclass of TemplateResponse to easily plug block rendering into class based views.
This implementation checks for a block name in argument called ``__part__``.
This should simplify rendering parts of a webpage via AJAX.
For instance you could use jQuery to load a block named ``content`` into a div with ``id="contentcontainer"``::
<script>
$(".menulink").on('click', function (e) {
e.preventDefault();
var $this = $(this);
var href = $this.attr('href');
var $container = $("#contentcontainer");
$.get(href, { '__part__' : 'content' }, function(resp) { $container.html(resp); });
});
</script>
For a different behavior (e.g. relying on a specific HTTP header like in PJAX) you could override
the ``get_block_part`` in your subclass.
'''
def get_block_part(self, request):
if request.is_ajax():
return request.REQUEST.get('__part__', None)
@property
def rendered_content(self):
if self.block_part is not None:
template = self.resolve_template(self.template_name)
context = self.resolve_context(self.context_data)
content = render_template_block(template, self.block_part, context)
return content
else:
return super(BlockAwareTemplateResponse, self).rendered_content
def __init__(self, request, *args, **kwargs):
self.block_part = self.get_block_part(request)
return super(BlockAwareTemplateResponse, self).__init__(request, *args, **kwargs)
class BlockAwareTemplateResponseMixin(TemplateResponseMixin):
'''
A mixin to enable partial (block) rendering in class based views
You can use it like this::
class MyView(BlockAwareTemplateResponseMixin, TemplateView):
pass
'''
response_class = BlockAwareTemplateResponse