admin.py: putting "if condition" in ModelAdmin according to username

[Vittorio]

For the sake of simplicity let's suppose I have

models.py

class Book(models.Model):
title = models.CharField(max_length=100)
authors = models.ManyToManyField(Author)
publisher = models.ForeignKey(Publisher)

Under admin I would like that some username (say "vic" and "lucky") can edit every field of the change form while other users ("tom","sue") can only visualize the same data without modification. I think to put some "if condition" in admin.py of this kind


class BookOption(admin.ModelAdmin):
if username in ["tom", "sue"]:
readonly_fields = ['title','authors','publisher']
fields=(('title'),('authors', 'publisher'))..
.....
admin.site.register(Book,BookOption)


How can I do it?

Ciao
Vittorio

[Rafael E. Ferrero]

In Admin Site, you can manage users permissions for Add, Delete, Modify of every model on your site.

2013/10/9 Vittorio <ml-...@de-martino.it>

Vittorio

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Rafael E. Ferrero

[Victor]

Yes, I know but unfortunately if in Admin Site you say that a user cannot Add, Delete, and Modify a model if that user is connected he/she doesn't see the model itself in the list but only those models for which it has some kind of permission. I instead would like to make the model visible but not editable for that user.

Ciao
Vittorio

> To view this discussion on the web visit https://groups.google.com/d/msgid/django-users/CAJJc_8U3EbZXHVSucFndA25V%3DuYyen%3DGgUsyHmzLncD5DuGi2w%40mail.gmail.com.

[Bill Freeman]

It's easy, if you don't insist on making it part of the admin, to do this with a custom view.  It can pay attention to whatever permissions you like.

To view this discussion on the web visit https://groups.google.com/d/msgid/django-users/B4D514E2-7FA0-4CB3-A83E-82442A8DAFC6%40gmail.com.

[Timothy W. Cook]

In the ModelAdmin I use a get_form() to test for conditions on the object. Specifically, if this item has been published then make it read_only.  You should be able to test for users as well.

I had to add the try/except in order to add new objects because obj.published doesn't exist on a new object. 

See:

https://docs.djangoproject.com/en/1.5/ref/contrib/admin/#django.contrib.admin.ModelAdmin.get_form

 

Here is a snippet: 

    def get_form(self, request, obj=None, **kwargs):

        try:

            if obj.published:

                self.readonly_fields = ['prj_name','published','schema_code','data_name','description','sem_attr','resource_uri','asserts',

                                        'simple_units','coded_units','normal_status','reference_ranges','min_inclusive','max_inclusive',

                                        'min_exclusive','max_exclusive','total_digits','fraction_digits','magnitude','error','accuracy','magnitude_status',]

        except (AttributeError, TypeError) as e:

            self.readonly_fields = ['published','schema_code']

        return super(DvQuantityAdmin, self).get_form(request, obj, **kwargs)

To view this discussion on the web visit https://groups.google.com/d/msgid/django-users/B4D514E2-7FA0-4CB3-A83E-82442A8DAFC6%40gmail.com.

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