Make django admin to display no more than 100 characters in list results

Question

I am using Django admin for my site and I would like to make a customization on how a field is displayed on the list_display page for one of my models.

One of my models has a TextField that can be 300 characters

When the model is listed in the Django admin, I would like to limit the length of the text displayed in the Admin list display to 100 characters.

Is there a way to do this within the Django Admin class?

admin.py:

class ApplicationAdmin(admin.ModelAdmin):     model = Application     list_display = [ "title1", "title2"] 

models.py:

class Application(models.Model):     title1 = models.TextField(max_length=300)     title2 = models.TextField(max_length=300) 

Answer 1

You can display a property that returns a truncated version of your field's value in your ModelAdmin class. Leveraging the built-in template filters makes this easy.

from django.template.defaultfilters import truncatechars  # or truncatewords  class Foo(models.Model):     description = models.TextField()      @property     def short_description(self):         return truncatechars(self.description, 100)  class FooAdmin(admin.ModelAdmin):     list_display = ['short_description']