New structure (#7)

pkg/models/namespace_users_delete.go

@@ -0,0 +1,25 @@
+package models
+
+// Delete deletes a namespace <-> user relation
+func (nu *NamespaceUser) Delete() (err error) {
+
+	// Check if the user exists
+	_, err = GetUserByID(nu.UserID)
+	if err != nil {
+		return
+	}
+
+	// Check if the user has access to the namespace
+	has, err := x.Where("user_id = ? AND namespace_id = ?", nu.UserID, nu.NamespaceID).
+		Get(&NamespaceUser{})
+	if err != nil {
+		return
+	}
+	if !has {
+		return ErrUserDoesNotHaveAccessToNamespace{NamespaceID: nu.NamespaceID, UserID: nu.UserID}
+	}
+
+	_, err = x.Where("user_id = ? AND namespace_id = ?", nu.UserID, nu.NamespaceID).
+		Delete(&NamespaceUser{})
+	return
+}