Method _check_inlines_item

django/contrib/admin/checks.py:879–915

Check one inline model admin.

(self, obj, inline, label)

            )

    def _check_inlines_item(self, obj, inline, label):
        """Check one inline model admin."""
        try:
            inline_label = inline.__module__ + "." + inline.__name__
        except AttributeError:
            return [
                checks.Error(
                    "'%s' must inherit from 'InlineModelAdmin'." % obj,
                    obj=obj.__class__,
                    id="admin.E104",
                )
            ]

        from django.contrib.admin.options import InlineModelAdmin

        if not _issubclass(inline, InlineModelAdmin):
            return [
                checks.Error(
                    "'%s' must inherit from 'InlineModelAdmin'." % inline_label,
                    obj=obj.__class__,
                    id="admin.E104",
                )
            ]
        elif not inline.model:
            return [
                checks.Error(
                    "'%s' must have a 'model' attribute." % inline_label,
                    obj=obj.__class__,
                    id="admin.E105",
                )
            ]
        elif not _issubclass(inline.model, models.Model):
            return must_be(
                "a Model", option="%s.model" % inline_label, obj=obj, id="admin.E106"
            )
        else:
            return inline(obj.model, obj.admin_site).check()

    def _check_list_display(self, obj):
        """Check list_display only contains fields or usable attributes."""