count

[sum abiut]

Hi,

i am trying to count the number of fields that has request field begin checked and then display the value of count in a template.html but i am not sure how to go about doing that.

For example i want to do something like

test=ball.object.filter(request="checked").count()

then on a template.html i want to out put the value of test

{{test}}

i have try that but i am not getting any value from the output.

Thanks in advance

Cheers

[James Schneider]

Can you post your view? You would run that query in your view and then pass it to your template through the context.

-James

[sum abiut]

Thanks James,

here is my view.py

def foreginexchange_view(request):
    test=ball.objects.filter(request="checked").count()
    return render(request,'template.html',locals())

Cheers

-James

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[aspe...@gmail.com]

Try this
def foreginexchange_view(request):   
    t = loader.get_template("template.html")
    test=ball.objects.filter(request="checked").count()   
    return HttpResponse(t.render({'test': test}))

[Andreas Schosser]

Hi

> i am trying to count the number of fields that has request field begin
> checked and then display the value of count in a template.html but i am not
> sure how to go about doing that.

If you pass your object to the template you can use the "length" filter:

{{ test|length }}

Andreas

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[James Schneider]

On Tue, Jan 26, 2016 at 6:12 AM, Andreas Schosser <a...@kurs-10.de> wrote:

Hi

> i am trying to count the number of fields that has request field begin
> checked and then display the value of count in a template.html but i am not
> sure how to go about doing that.

If you pass your object to the template you can use the "length" filter:

{{ test|length }}

I would only do this if {{ test }} contains objects that you actually want to process/display elsewhere in the template. If you only need the count, I would recommend sticking with the .count() query and passing it through the context since that is faster and more efficient to process, especially for items like votes or likes, where the numbers may reach into the thousands or more.

-James

[sum abiut]

When i did that i got the error:

'dict' object has no attribute 'render_context'

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-

[aspe...@gmail.com]

Which version of Django do you using?

вторник, 26 января 2016 г., 23:14:03 UTC+2 пользователь suabiut написал:

[sum abiut]

Version 1.7

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[aspe...@gmail.com]

from django.http import HttpResponse
from django.template import loader, RequestContext

def foreginexchange_view(request):
    t = loader.get_template("template.html")
    test=ball.objects.filter(request="checked").count()

    c = RequestContext(request, {'test': test})
    return HttpResponse(t.render(c))

[sum abiut]

Thanks heaps works perfectly well.

Cheers

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