Method _build_app_dict

django/contrib/admin/sites.py:469–539

Build the app dictionary. The optional `label` parameter filters models of a specific app.

(self, request, label=None)

        raise Http404

    def _build_app_dict(self, request, label=None):
        """
        Build the app dictionary. The optional `label` parameter filters models
        of a specific app.
        """
        app_dict = {}

        if label:
            models = {
                m: m_a
                for m, m_a in self._registry.items()
                if m._meta.app_label == label
            }
        else:
            models = self._registry

        for model, model_admin in models.items():
            app_label = model._meta.app_label

            has_module_perms = model_admin.has_module_permission(request)
            if not has_module_perms:
                continue

            perms = model_admin.get_model_perms(request)

            # Check whether user has any perm for this module.
            # If so, add the module to the model_list.
            if True not in perms.values():
                continue

            info = (app_label, model._meta.model_name)
            model_dict = {
                "model": model,
                "name": capfirst(model._meta.verbose_name_plural),
                "object_name": model._meta.object_name,
                "perms": perms,
                "admin_url": None,
                "add_url": None,
            }
            if perms.get("change") or perms.get("view"):
                model_dict["view_only"] = not perms.get("change")
                try:
                    model_dict["admin_url"] = reverse(
                        "admin:%s_%s_changelist" % info, current_app=self.name
                    )
                except NoReverseMatch:
                    pass
            if perms.get("add"):
                try:
                    model_dict["add_url"] = reverse(
                        "admin:%s_%s_add" % info, current_app=self.name
                    )
                except NoReverseMatch:
                    pass

            if app_label in app_dict:
                app_dict[app_label]["models"].append(model_dict)
            else: