The link of the "view_on_site" button is not formed according to the returning result of the "get_absolute_url" method.

[George Tantiras]

I am using Django-1.10.5 under Python-3.4.2.

from django.db import models


class Product(models.Model):
    name = models.CharField(verbose_name="Name", max_length=100, unique=True)

    def get_absolute_url(self):
        return "test-string/{0}".format(self.id)


class Flavor(models.Model):
    product = models.ForeignKey(Product, verbose_name="Product")
    name = models.CharField(verbose_name="Name", max_length=100)


    def get_absolute_url(self):
        return "test-string-2/{0}".format(self.id)

admin.py:

from django.contrib import admin
from inline_online.models import Flavor, Product


class FlavorInline(admin.TabularInline):
    model = Flavor


class ProductAdmin(admin.ModelAdmin):
    list_display = ("id", "name")
    inlines = [FlavorInline, ]


admin.site.register(Product, ProductAdmin)


class FlavorAdmin(admin.ModelAdmin):
    view_on_site = True


admin.site.register(Flavor, FlavorAdmin)

The view_on_site link appears either in the main model admin view or in the inlines but the url is not the one returned from get_absolute_url method (example: /admin/r/10/1)

A very old ticket seem to reference the same issue: https://code.djangoproject.com/ticket/7984

[Tim Graham]

The view on site links will redirect from something like /admin/r/62/1/ to the contents of get_absolute_url(), however, it looks like you made a mistake: get_absolute_url() must return a value that starts with a slash.

[George Tantiras]

I apologize for this mistake.

However, in the ​relevant django docs reverse url returns a string which begins with '​https://'. Correcting my get_absolute_url(), to return a string which begins either with '​https://' or with a slash ('/xxx') the view on site link will just return its standard /admin/r/62/1/.

On the other hand when I use an external admin app like django-suit, while the main link works as expected (it receives the get_absolute_url() value), the inline link -if it appears- (I cannot figure out under which circumstances it will appear) it redirects to the wrong /admin/r/62/1/.

I will verify all the above in my main project where I use reverse() in get_absolute_url().

[Tim Graham]

Does the /admin/r/62/1/ URL redirect to the wrong get_absolute_url()? Maybe I'm misunderstanding but your complaint seems to be that the /admin/r/62/1/ URL appears in the first place (i.e. you don't want to an intermediate redirect), but as far as I know, this is expected behavior.

[George Tantiras]

For example:

class MyModel(models.Model):
...

    def get_absolute_url(self, obj):
        return 'http://127.0.0.1:8000/test'

...

Using native django admin, view_on_site returns: http://127.0.0.1:8000/admin/r/19/3305/
Enabling django-suit, view_on_site returns: http://127.0.0.1:8000/test

The relevant links when the model is an inline, are a pure mess do not seem to work as expected.

[Tim Graham]

I see URLs like /admin/r/62/1/ redirecting to URLsfrom get_absolute_url() so I'm still not sure what you're reporting as a bug. This is how Django works. It's not expected that the results of get_absolute_url() replace the /admin/... URLs, in the links, only that the redirect changes. Please explain what "pure mess" means (and try to avoid unfriendly language like that).

If there is some problem when enabling django-suit, then you need to report the bug to that package -- it's not part of Django.

[George Tantiras]

Sorry, I have no intention to offend, I have corrected the inaccurate expression.

Oh, it redirects, I just understood the point. (doh)

I am not in front of my box. I will double check it when I return home.

Thank you for your solid support.

[George Tantiras]

Finally, I sat in front of my box and found the solution to my problem. I was confused by django-suit which falsely returned an apparently correct result.

I had to use ModelAdmin.view_on_site(obj) instead of Model.get_absolute_url() due to the fact that the model was unaware of the custom ModelAdmin.get_queryset()I was using.

I feel like it is time to make an -at least- symbolic donation to redeem my lack of concentration. Thank you again for your patience and support!