Added methods to revoke a users access to a list

models/list_users_delete.go

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