Add double click and require people have books assigned before double click

main.py

@@ -4,7 +4,7 @@ import re
 import sys
 from typing import cast
 
-from PyQt6.QtCore import Qt, pyqtSlot
+from PyQt6.QtCore import QModelIndex, Qt, pyqtSlot
 from PyQt6.QtGui import (
     QAction,
     QFont,
@@ -19,8 +19,6 @@ from PyQt6.QtWidgets import QApplication, QFileDialog, QMainWindow
 from lib import *
 from ui.MainWindow import Ui_MainWindow
 
-# from ui.testWindow import Ui_MainWindow
-
 
 def query_error(query: QSqlQuery) -> None:
     print(
@@ -34,17 +32,28 @@ def query_error(query: QSqlQuery) -> None:
     raise Exception("SQL Error")
 
 
+class ModelOverride(QSqlQueryModel):
+    def flags(self, index: QModelIndex) -> Qt.ItemFlag:
+        itemFlags = super(ModelOverride, self).flags(index)
+        value = index.siblingAtColumn(3).data()
+        if not value or value < 1:
+            itemFlags &= ~(Qt.ItemFlag.ItemIsSelectable | Qt.ItemFlag.ItemIsEnabled)
+        return itemFlags
+
+
 class MainWindow(QMainWindow, Ui_MainWindow):
     def __init__(self) -> None:
         super(MainWindow, self).__init__()
         self.setupUi(self)
-        model = QSqlQueryModel()
+        # model = QSqlQueryModel()
+        model = ModelOverride()
         query = QSqlQuery("SELECT * FROM people ORDER BY name")
         model.setQuery(query)
         self.peopleView.setModel(model)
         self.peopleView.setModelColumn(1)
         self.ReadButton.clicked.connect(self.readAction)
         self.bookBtn.clicked.connect(self.bookAction)
+        self.peopleView.doubleClicked.connect(self.readAction)
         self.createActions()
         self.show()
         return
@@ -148,11 +157,15 @@ class MainWindow(QMainWindow, Ui_MainWindow):
         return
 
     @pyqtSlot()
-    def readAction(self) -> None:
-        indexes = self.peopleView.selectedIndexes()
-        if len(indexes) < 1:
-            return
-        person_id = indexes[0].siblingAtColumn(0).data()
+    @pyqtSlot(QModelIndex)
+    def readAction(self, index: QModelIndex | None = None) -> None:
+        if index:
+            person_id = index.siblingAtColumn(0).data()
+        else:
+            indexes = self.peopleView.selectedIndexes()
+            if len(indexes) < 1:
+                return
+            person_id = indexes[0].siblingAtColumn(0).data()
         dlg = EditDialog(person_id)
         dlg.exec()
         return
@@ -232,7 +245,7 @@ def schema_update(db: QSqlDatabase) -> None:
         if not query.exec(matches.group(1) + new_table_name + matches.group(3)):
             query_error(query)
         # step 5 transfer content
-        coldefs = re.search(r"\((.+)\)", old).group(1).split(", ") # type: ignore[union-attr]
+        coldefs = re.search(r"\((.+)\)", old).group(1).split(", ")  # type: ignore[union-attr]
         cols = [x.split(" ")[0] for x in coldefs]
         if not query.exec(
             "INSERT INTO "