[main] Outline for error handling of member creation

src/database/member.py

@@ -1,9 +1,12 @@
-from sqlalchemy.exc import IntegrityError
+from sqlalchemy.exc import IntegrityError, SQLAlchemyError
 
 from models.member import Member
 
 from utils.database import DatabaseManager
 
+from utils.errors.database.database_error import DatabaseError
+from utils.errors.database.duplicate_entry_error import DuplicateEntryError
+
 def create_new_member(new_member: Member):
     try:
         with DatabaseManager.get_session() as session:
@@ -12,3 +15,9 @@ def create_new_member(new_member: Member):
     except IntegrityError as e:
         print(e)
         session.rollback()
+        raise DuplicateEntryError from e
+    except SQLAlchemyError as e:
+        print(e)
+        session.rollback()
+        raise DatabaseError from e
+

src/ui/main_window_tabs/member_list/member_list.py

@@ -11,7 +11,7 @@ from utils.database import DatabaseManager
 from ui.member_editor.member_editor import MemberEditor
 
 
-class MemberDashboard(QWidget):
+class MemberList(QWidget):
     def __init__(self):
         super().__init__()
 

src/ui/member_editor/member_editor.py

@@ -1,17 +1,23 @@
+import logging
+
 from PySide6.QtGui import QGuiApplication, QAction
 from PySide6.QtQml import QQmlApplicationEngine
 from PySide6 import QtWidgets, QtCore
-from PySide6.QtWidgets import QVBoxLayout, QFormLayout, QLineEdit, QHBoxLayout, QPushButton, QDialog
+from PySide6.QtWidgets import QVBoxLayout, QFormLayout, QLineEdit, QHBoxLayout, QPushButton, QDialog, QMessageBox
 
 from models.member import Member
 
 from database.member import create_new_member
 
+from utils.errors.database.database_error import DatabaseError
+from utils.errors.database.duplicate_entry_error import DuplicateEntryError
+
 
 class MemberEditor(QDialog):
     def __init__(self, member: Member = None):
         super().__init__()
 
+        self.logger = logging.getLogger(__name__) 
         self.create_layout()
 
         if member:
@@ -75,7 +81,11 @@ class MemberEditor(QDialog):
         self.member.email = self.email_input.text()
         self.member.phone = self.phone_number_input.text()
 
-        if self.create_new:
-            create_new_member(self.member)
+        try:
+            if self.create_new:
+                self.logger.debug("Creating new member")
+                create_new_member(self.member)
+        except DuplicateEntryError:
+            QMessageBox.critical(None, "Details already in use", "Cannot create a new user", QMessageBox.StandardButton.Ok, QMessageBox.StandardButtons.NoButton)
 
         self.accept()

src/ui/window.py

@@ -5,7 +5,7 @@ from PySide6.QtWidgets import QMessageBox, QFileDialog
 from PySide6.QtCore import QStandardPaths
 
 from ui.dashboard.dashboard import LibraryDashboard
-from ui.main_window_tabs.member_list.member_list import MemberDashboard
+from ui.main_window_tabs.member_list.member_list import MemberList
 from ui.book_editor.book_editor import BookEditor
 from ui.member_editor.member_editor import MemberEditor
 
@@ -40,7 +40,7 @@ class LibraryWindow(QtWidgets.QMainWindow):
 
 
         self.dashboard = LibraryDashboard()
-        self.member_list = MemberDashboard() 
+        self.member_list = MemberList() 
         central_widget.addTab(self.dashboard, "Dashboard")
         central_widget.addTab(self.member_list, "Members")
 

src/utils/errors/database/duplicate_entry_error.py

@@ -0,0 +1,6 @@
+from .database_error import DatabaseError
+
+class DuplicateEntryError(DatabaseError):
+    def __init__(self, message: str):
+        super().__init__(message)
+        self.message = message