creating a custom template tags in django

I am new to Django and I am trying to create custom tags in django

my custom tag file templatetag/custom_tag.py

templatetag/custom_tag.py

from django import template
from model_file.models import my_Model

register = template.Library()

@register.simple_tag
def get_custom_tag_fn():

return my_Model.objects.all()


my html file

{% load custom_tag %}
{% get_custom_tag_fn as queries %}
{% for query in queries %}
{{query.json_my_model_data}}
{% endfor %}


I am not getting any output or error from this code. Can anyone point where I went wrong.

for extra information my model.py looks like

model.py

from django.db import models
from jsonfield import JSONField

class my_Model(models.Model):
json_my_model_data = JSONField()


my_Model

my_Model

val1

{{queries}}

<QuerySet [<my_Model: my_Model object (1)>, <my_Model: my_Model object (2)>]>

1 Answer
1

It looks like my_Model doesn't have a val1 field, you may need to change your template to the following if you want to show json_my_model_data field in your data model my_Model:

my_Model

val1

json_my_model_data

my_Model

{% load custom_tag %}
{% get_custom_tag_fn as queries %}
{% for query in queries %}
{{query.json_my_model_data}} # to get model's `json_my_model_data` content.
{% endfor %}


On the top of that {{query.json_my_model_data}} will only be executed and show the contents of json_my_model_data if queries queryset has at-least one my_Model object from the database.

{{query.json_my_model_data}}

json_my_model_data

queries

my_Model

More on custom template tags.

Hope it helps.

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