On Mon, Jul 17, 2017 at 03:46:30PM +0200, Ogi Vranesic wrote: > Hi > > I have used some templates in older django versions. > But now in django 1.11 using the same templates, the error: > > ValueError: Need 2 values to unpack in for loop; got 3. > > will be raised on line 207 in module django.template.defaulttags > by the method render of class ForNode > > Actually is by me looking at code *num_loopvars = 2* and *len_item = 3*. > > After I've outcommented this part of code, some of this template as a form > is displayed and one can work on it. > > So could somebody tell me what is purpose of this two variables and > comparing of them? > > Thanks very much in advance and best regards > Ogi
Sounds like you are trying to loop over a list in your template,
something like this::
{% for a, b in mylist %}
...
{% endfor %}
The problem is that mylist contains triples, not pairs. It would help
a lot if you could show the actual template code, as well as the
context that you pass to the template.
Cheers,
Michal
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