Show adherent status in admin user list

users/admin.py

@@ -30,6 +30,24 @@ class ListRightAdmin(VersionAdmin):
     list_display = ('listright',)
 
 
+class IsAdherentFilter(admin.SimpleListFilter):
+    title = _('adherent status')
+    parameter_name = 'is_adherent'
+
+    def lookups(self, request, model_admin):
+        return (
+            ('Yes', _('Yes')),
+        )
+
+    def queryset(self, request, queryset):
+        value = self.value()
+        if value == 'Yes':
+            # Get current membership year and list all members
+            last_adh_year = Adhesion.objects.all().order_by('annee_debut').reverse().first()
+            return last_adh_year.adherent
+        return queryset
+
+
 class UserAdmin(VersionAdmin, BaseUserAdmin):
     # Customize admin to add more fields
     fieldsets = (
@@ -41,6 +59,20 @@ class UserAdmin(VersionAdmin, BaseUserAdmin):
                                        'maxemprunt')}),
         (_('Important dates'), {'fields': ('last_login', 'date_joined')}),
     )
+    list_display = ('username', 'email', 'first_name', 'last_name',
+                    'maxemprunt', 'is_adherent', 'is_staff')
+    list_filter = (IsAdherentFilter, 'is_staff', 'is_superuser', 'is_active',
+                   'groups')
+
+    def is_adherent(self, obj):
+        """
+        Get current membership year and check if user is there
+        """
+        last_adh_year = Adhesion.objects.all().order_by('annee_debut').reverse().first()
+        return last_adh_year and obj in last_adh_year.adherent.all()
+
+    is_adherent.boolean = True
+    is_adherent.short_description = _('is adherent')
 
 
 admin.site.register(User, UserAdmin)