Comparison in Django template using request.GET and choices is not properly evaluated

Question

I have this in my models:

class Task(Record):

    class Status(models.IntegerChoices):
        OPEN = 1, "Open"
        COMPLETED = 2, "Completed"
    status = models.IntegerField(choices=Status.choices, db_index=True, default=1)

Then in my template I want to show all the statuses, so I do this in views.py:

context = { 
  "statuses": Task.Status.choices,
}

And in my template I loop through it:

{% for label,name in statuses %}
  {{ label }}: {{ name }}
{% endfor %}

This leads to:

1: Open
2: Completed

So far, so good. But now if I use a GET parameter, I can't get things to work as I want. Say I open ?id=2 and then I run:

{% for label,name in statuses %}
  {{ label }}: {{ name }} 
  {% if label == request.GET.id %}
     YES
  {% else %} 
     Sorry, not equal to {{ request.GET.id }}
  {% endif %}
{% endfor %}

Then I expect this to show YES for the first item. But it doesn't! Somehow this evaluates to:

1: Open Sorry, not equal to 1 
2: Completed Sorry, not equal to 1

I do not understand why the first item does not evaluate to true.

It comes from the choice list, eg OPEN = 1, "Open" -> I guess it's int... — , Jun 09 '20 at 15:08
Should the variable type be equal for this to evaluate to true? If so, is there a way to still evaluate this if true if the type is different? — , Jun 09 '20 at 15:09

Muhammad Faizan Fareed · Accepted Answer · 2020-06-09T17:34:50.070

0

In your view to store this value into context and pass with template . Get data from request like this

request.GET.get('id')

and make sure data type of both must be same otherwise you will always execute else condition.

Capturing url parameters in request.GET

edited Jun 09 '20 at 17:34

answered Jun 09 '20 at 15:20

Muhammad Faizan Fareed

3,298
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That syntax makes sense in the views.py file, but in this case I'm working in the template and that doesn't work (Could not parse the remainder... error). – Jun 09 '20 at 16:11
OK noted, but does that mean that you can not do these kinds of comparisons directly in the templates? Do you know the reason? – Jun 10 '20 at 05:26
NOTE: I actually had to type cast the request.GET["id"] as integer, only then would it work. – Jun 10 '20 at 05:30
You can do comparison in templates but same data type needed. – Muhammad Faizan Fareed Jun 10 '20 at 06:55

Comparison in Django template using request.GET and choices is not properly evaluated

1 Answers1