CODEWITHSUNDEEP
django
vandelay
vandelay

Reputation: 2075

admin panel, show date_created and date_updated?

I tried following an answer at this previous post: DateTimeField doesn't show in admin system

But maybe I'm just too dim to understand it.

No field of created_at shows up. Could anyone point me in the right direction?

model

class holding_transaction(models.Model):
    holdingname = models.ForeignKey(holding, on_delete=models.CASCADE)
    created_at = models.DateTimeField(auto_now_add=True)
    updated_at = models.DateTimeField(auto_now=True)

admin.py

class holding_transactionAdmin(admin.ModelAdmin):

    readonly_fields = ('created_at', )

admin.site.register(holding_transaction, holding_transactionAdmin)

Edit:

Upvotes: 6

Views: 4645

Answers (1)

raratiru
raratiru

Reputation: 9636

Update:

Here is the code that worked for me for an imaginary application called Beatles:

beatles/models.py:

from django.db import models

# Create your models here.

class Person(models.Model):
    name = models.CharField(max_length=128)
    created_at = models.DateTimeField(auto_now_add=True)


    def __str__(self):              # __unicode__ on Python 2
        return self.name

beatles/admin.py

from django.contrib import admin

# Register your models here.

from beatles.models import Person


@admin.register(Person)
class PersonAdmin(admin.ModelAdmin):
    readonly_fields = ('created_at', )

The answer to the question mentioned, states that this is not possible to happen.

Nonetheless, if you want to edit such fields, according to the docs you proceed as follows:

If you want to be able to modify this field, set the following instead of auto_now_add=True:

For DateField: default=date.today - from datetime.date.today()
For DateTimeField: default=timezone.now - from django.utils.timezone.now()

If you want those fields just to be displayed, you can use the following code:

class YourModelAdmin(admin.ModelAdmin):
    readonly_fields = ('created_at', 'updated_at', )

admin.site.register(YourModel, YourModelAdmin)

Upvotes: 9

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