Callable field in fieldset's field

[Gagan Deep]

Greetings of the day, 

I have defined a model admin inheriting from admin.ModelAdmin class. There is one of the fields which I want to show on the admin dashboard which is a function. I read in Django docs that for a callable function to be a field, it should be added in readonly_fields. So far, it was working great. The problem arose when I mentioned that callable field in the fieldset. 

This worked fine:

class Myadmin(admin.ModelAdmin):

    readonly_fields = ('my_callable_field', )

    fields = ('my_callable_field' )

But, doing this popped Unknown field(s) (my_callable_field) specified for <model>. Check fields/fieldsets/exclude attributes of class Myadmin

class Myadmin(admin.ModelAdmin):

    readonly_fields = ('my_callable_field', )
fieldsets = (
(None, {'fields': ('my_callable_field',)}),
)

I don't understand why this is happening.

[Federico Capoano]

Is this the kind of thing you're looking for?

https://github.com/openwisp/openwisp-firmware-upgrader/tree/1e9fa26d75a48ae9274c2708ea9a10134a2bb9d0/openwisp_firmware_upgrader/base/admin.py#L150-L186

Fed

[Gagan Deep]

Thanks Federico, it did solved the problem. 

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