[Answered ]-Django 3.2.5 read-only DateTimeField

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1👍

✅

The auto_now=… [Django-doc] and auto_now_add=… [Django-doc] expects booleans, so True, not datetime.now, but since a function has by default truthiness True, that will also work.

The consequence of auto_now=True or auto_now_add=True implies that editable=… [Django-doc] is set to False as well, and this means that, by default, the field is no longer in ModelForms nor in the admin.

You can however explicitly list the item as a field in the readonly_fields attribute [Django-doc], to ensure that it is displayed, so:

from django.contrib import admin


@admin.register(Project)
class ProjectAdmin(admin.ModelAdmin):
    fields = (
        'name',
        'description',
        'brand',
        'creation_date',
        'modified',
        'start_date',
    )
    readonly_fields = ('creation_date', 'modified')
👤willeM_ Van Onsem

0👍

You can also do that in the admin.py by get_readonly_fields on a model registered to show read only fields. You can reference here and here is an example

from django.contrib import admin
from yourApp.models import Project

class ProjectAdmin(admin.ModelAdmin):
    
    def get_readonly_fields(self, request, obj=None):
        if request.user.is_superuser:
            # Should return ('created_at', 'created_by') from Project model
            return super().get_readonly_fields(request, obj)
        else:
            """
             Add read only fields that you want none superusers
             to read or just return none if not needed
            """
            return ('field_2', 'filed_2',...)

admin.site.register(Project, ProjectAdmin)
👤sikaili99

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