Validate non-None values prior

to casting into int or floats.
Also modify the behaviour of
bool with a overt Nan option

Author: i-jey

ulc_mm_package/QtGUI/study_metadata_form.py

@@ -87,11 +87,11 @@ def create_widget_for_field(field_def):
             if idx >= 0:
                 w.setCurrentIndex(idx)
     elif t == "bool":
-        w = QCheckBox()
-        default = field_def.get("default")
-        if default is not None:
-            w.setChecked(bool(default))
-
+        w = QComboBox()
+        w.addItem("True", True)
+        w.addItem("False", False)
+        w.AddItem("None", None)
+        w.setCurrentIndex(-1)
     else:
         raise ValueError(f"Unsupported field type: {t}")
 
@@ -188,17 +188,19 @@ def get_form_input(self):
                 value = (
                     widget.toPlainText() if field.get("multiline") else widget.text()
                 )
-                if field.get("required") and not value:
-                    errors.append(f"{field.get('label', name)} is required.")
             elif t == "int":
-                value = int(widget.text())
+                text = widget.text().strip()
+                value = None if not text else int(widget.text())
             elif t == "float":
-                value = float(widget.text())
+                text = widget.text().strip()
+                value = None if not text else float(widget.text())
             elif t == "date":
                 qd = widget.date()
                 value = qd.toString("yyyy-MM-dd")
             elif t == "enum":
                 value = widget.currentText()
+            elif t == "bool":
+                value = widget.currentData()
             else:
                 value = None