On Wed, Mar 9, 2011 at 1:30 PM, octopusgrabbus
<old_road_f...@verizon.net>wrote:
> This is for Django 1.2 and MySQL 5.x
>
> How does a template know a dictionary's name, if a dictionary is
> supplied in render_to_response?
>
>
It doesn't.
> totals_dict['TotalActiveAccounts'] = ret_list[0]
> totals_dict['TotalBillableAccounts'] = ret_list[1]
> totals_dict['TotalNon-BillableAccounts'] = int(ret_list[0]) -
> int(ret_list[1])
>
> context_instance=RequestContext(request))
> return render_to_response('main_page.html', totals_dict,
> context_instance=RequestContext(request))
>
>
Given that code, the template can access TotalActiveAccounts and
TotalBillableAccounts:
{{ TotalActiveAccounts }} {{ TotalBillableAccounts }}
That last key of 'TotalNon-BillableAccounts' is going to be a problem
because the dash isn't allowed in a template variable name (though I can't
find where allowed chars in template variable name are listed...but trying
to access {{ TotalNon-BillableAccounts }} will generate a template syntax
error relating to not being able to parse the content after the dash. So
you're going to want to avoid putting dashes in your dictionary key names.
If for some reason you wanted that dictionary, directly, accessible in the
context for the template, you'd pass it inside a different dictionary passed
to render_to_response:
render_to_response('main_page.html', {'totals_dict': totals_dict }, ...
Since I gave the key the same name as the variable with the value, that's
the name it will have in the template context, and you can get to the
individual items using the . operator, e.g.:
{{ totals_dict.TotalActiveAccounts }}
If I instead passed the dict under a different name:
render_to_response('main_page.html', {'foo': totals_dict }, ...
that's the name I'd use in the template:
{{ foo.TotalActiveAccounts }}
So the variable name for the dictionary in the view makes no difference,
it's the key names in the dictionary passed to render_to_response that
matter to the template.
Karen
--
http://tracey.org/kmt/
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