Re: Making a field readonly according to the user in admin.py

While Jani's admonishments might be considered 'best practice' in some cases. Those do not always cover everyone's use case.

 

I solved a similar issue allowing users with the superuser role to have edit access to some items that other staff do not have access to edit. 

Use the get_form method of the ModelAdmin and select the form to call. 

For example:

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

        if request.user.is_superuser:

            kwargs['form'] = DMAdminSUForm

        else:

            kwargs['form'] = DMAdminForm

Then in each form you can set the readonly attributes and any other user role specific functionality you need. 

HTH,

Tim

  

On Wed, Nov 18, 2015 at 8:21 AM, Jani Tiainen <redetin@gmail.com> wrote:

Hi,

In general you shouldn't be even trying to do this in admin since it's not designed for this kind of functionality.

Admin is just a datacentric tool to view your data. It's never been meant to help implementing any businesslogic. And basically you only should let people in admin that you trust full 100%.

If you can't trust them (which is indicated by "readonly field" requirement) you should do custom view and templates for that. Generic class based views can greatly help you to achieve it, and most probably with really less effort than trying to do that in admin.

On 18.11.2015 12:15, Victor wrote:

Dear experts,

models.py

class Book(models.Model):
     title = models.CharField(max_length=100)
     author = models.CharField(max_length=100)
     quantity = models.IntegerField(db_column='quantitity',default=0)
     class Meta:
         db_table="book"

admin.py

class BookOption(admin.ModelAdmin):
     list_display = ('title', 'author', 'quantity')
     fields=(('title', 'author'), ('quantity'))
     order_by= ['title', ]

admin.site.register(Book,BookOption)


I'm trying to explain my problem with the simple example above.
Let's suppose that I have two staff users 'victor' and 'roby' and I want that the fields 'author and 'quantity' be readonly when user 'roby' is logged in and readwrite for user 'victor'
How can I achieve this result if possible with something of the following simple kind


class BookOption(admin.ModelAdmin):
     if (user is 'roby'):
        readonly_fields=['quantity',]
     list_display = ('title', 'author', 'quantity')
     fields=(('title', 'author'), ('quantity'))
     order_by= ['title', ]
  Thanks
Vittorio

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Jani Tiainen

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