Display only model fields that are non-empty

[Keir Lawson]

Hello,

I was wondering what the most elegant way (using a DetailView or similar) to display the fields of a model, excluding those that are empty?

Thanks

Keir

[Kurtis Mullins]

There's a couple of ways, assuming you're talking about in the template.

One example would simply be:

{% if object.fieldname %}

{{ object.fieldname }}

{% endif %}

Another example might be:

{{ object.fieldname|default:"" }} 

But it doesn't allow for much formatting of an empty field.

If you want to do this generically, you could take an approach of looping through all fields of a model and checking if each has a value before printing. Something along the lines of this might work for you:

http://stackoverflow.com/questions/2217478/django-templates-loop-through-and-print-all-available-properties-of-an-object

Good luck!

Keir

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[Jonathan Baker]

I just used the following code on a project to solve the problem you're describing:

models.py

class SomeModel(models.Model):

    ...

    def get_fields(self):

        return [(field.name, field.value_to_string(self)) for field in SomeModel._meta.fields if field.value_to_string(self) is not None]

It's a basic extension to the link that Kurtis just provided.

HTH.

--
Jonathan D. Baker
Developer
http://jonathandbaker.com