PermissionsDao: Add clearForPage()

database/permissionsdao.h

@@ -9,6 +9,8 @@ class PermissionsDao
 	PermissionsDao();
 	virtual std::optional<Permissions> find(std::string pagename, std::string username) = 0;
 	virtual void save(std::string pagename, std::string username, Permissions perms) = 0;
+	virtual void clearForPage(std::string pagename) = 0;
+
 	virtual ~PermissionsDao() = default;
 };
 

database/permissionsdaosqlite.cpp

@@ -59,3 +59,16 @@ void PermissionsDaoSqlite::save(std::string pagename, std::string username, Perm
 		throwFrom(e);
 	}
 }
+
+void PermissionsDaoSqlite::clearForPage(std::string pagename)
+{
+	try
+	{
+		auto stmt = *db << "DELETE FROM permissions WHERE page = (SELECT id FROM page WHERE name = ?)" << pagename;
+		stmt.execute();
+	}
+	catch(sqlite::sqlite_exception &e)
+	{
+		throwFrom(e);
+	}
+}

database/permissionsdaosqlite.h

@@ -10,6 +10,7 @@ class PermissionsDaoSqlite : public PermissionsDao, protected SqliteDao
 
 	std::optional<Permissions> find(std::string pagename, std::string username) override;
 	virtual void save(std::string pagename, std::string username, Permissions perms) override;
+	virtual void clearForPage(std::string pagename) override;
 	using SqliteDao::SqliteDao;
 };