CODEWITHSUNDEEP
djangodjango-models
LondonAppDev
LondonAppDev

Reputation: 9643

How to get a list of related items and apply a template filter in Django

I have a custom filter that joins an array of items by a specified character. For example it will turn:

In view:

test_array = ['one', 'two', 'three', 'four']

In template:

{{ test_array |joinby:","  }}

Output:

one, two, three, four

I need to apply this same filter to a queryset of related items from a model. I have tried this so far:

{{ user.related_model.all.name|joinby:","  }}

However it just returns nothing. What is the best way to get this type of query to work?

Upvotes: 0

Views: 90

Answers (1)

karthikr
karthikr

Reputation: 99650

You might want to keep the template clean, and create a filter, or handle this in your view.

In the view:

def my_view(request):
    #blah
    user_followers = request.user.related_model.values_list('name', flat=True)

and in the template

{{ user_followers | joinby: "," }}

Or

Register a filter

@register.filter(name='related_names')
def get_related_names(user):
    user_followers = user.related_model.values_list('name', flat=True)
    return ", ".join(user_followers)

and in the template:

{% related_names %}

Upvotes: 1

Related Questions