How to use variable to get attributes of another another variable in Django templates

Question

I am trying to populate a CSS grid in a Django template with specified columns and rows. To my best understanding, I need to do something like “nested variables” in the Django template to achieve what I’m looking for. I tried this, but it does not work:

   {% for parent_row in parent_rows %}
      {{ parent_row }}
      <div>p1</div>
      <div>p2</div>
      {% for child_row in children_rows %}
         <div> {{ child_row}} </div>
         {% for guy in guys %}
            <input type=”text” value=”{{guy}}.{{child_row}}”></input>
         {% endfor %}
      {% endfor %}
   {% endfor %}

The {{guy}}.{{child_row}} neither some of the similar variants I tried do not work. I manage to get the result I'm looking for by just writing the whole HTML open, and then by looping through each guy on separate rows, as I can use for example guy.name to get the desired value to each row, but this means lots of repetition.

parent_rows could look something like this for example:

“names”, “contact_information”, “hobbies”

children_rows could look something like this for example:

“forename”, “family_name”, “phone_number”, “mail”, “favourite_hobby”

and two records in the guys would be like this (both identical, to ease illustration):

“forename”: “Mike”
“family_name”: “McMediocre”
“phone_number”: “123”
“mail”: “[email protected]”
“favourite_hobby”: “tennis”

I am trying to populate the grid to look like this:

col1	col2	col3
names	p1	p2
forename	Mike	Mike
family_name	McMediocre	McMediocre
contact_information	p1	p2
phone_number	123	123
mail	[email protected]	[email protected]
hobbies	p1	p2
favourite_hobby	tennis	tennis

EDIT: Found an answer ot my question from here. The accepted answer was useful in my situation as well.

Tume · Accepted Answer · 2021-12-28 15:32:33Z

0

Found an answer to my question from here.

The accepted answer (custom template filters) was useful in my situation as well. What I did was:

Created a directory templatetags under MyApp
Created a file named customtemplatetag.py to that directory
Copy-pasted the snippet from the linked post:

from django import template

register = template.Library()

@register.filter def get_obj_attr(obj, attr): return getattr(obj, attr)
Added {% load mytemplatetag %} to my template
Used {{guy|get_obj_attr:child_row}} in the template

answered Dec 28, 2021 at 15:32

Tume

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