Django disable editing (but allow adding) in TabularInline view

Question

I want to disable editing ALL objects within a particular TabularInline instance, while still allowing additions and while still allowing editing of the parent model.

I

Answer 1

User django admin build in function has_change_permission() and return false to restrict object Edit view.

class SuperviseeAdmin(admin.TabularInline):
  model = Supervisee

  def has_change_permission(self, request):
      return False

class SupervisorAdmin(admin.ModelAdmin):
  inlines = [SuperviseeAdmin]

admin.site.register(Supervisor, SupervisorAdmin)