Parameter value bug (#7601) (#7602)

* Handle out-of range numerical values

* Add unit test

(cherry picked from commit 84d076848a)

Co-authored-by: Oliver <oliver.henry.walters@gmail.com>

src/backend/InvenTree/part/models.py

@@ -5,6 +5,7 @@ from __future__ import annotations
 import decimal
 import hashlib
 import logging
+import math
 import os
 import re
 from datetime import datetime, timedelta
@@ -3757,6 +3758,12 @@ class PartParameter(InvenTree.models.InvenTreeMetadataModel):
             except ValueError:
                 self.data_numeric = None
 
+        if self.data_numeric is not None and type(self.data_numeric) is float:
+            # Prevent out of range numbers, etc
+            # Ref: https://github.com/inventree/InvenTree/issues/7593
+            if math.isnan(self.data_numeric) or math.isinf(self.data_numeric):
+                self.data_numeric = None
+
     part = models.ForeignKey(
         Part,
         on_delete=models.CASCADE,

src/backend/InvenTree/part/test_param.py

@@ -47,6 +47,25 @@ class TestParams(TestCase):
             t3.full_clean()
             t3.save()  # pragma: no cover
 
+    def test_invalid_numbers(self):
+        """Test that invalid floating point numbers are correctly handled."""
+        p = Part.objects.first()
+        t = PartParameterTemplate.objects.create(name='Yaks')
+
+        valid_floats = ['-12', '1.234', '17', '3e45', '-12e34']
+
+        for value in valid_floats:
+            param = PartParameter(part=p, template=t, data=value)
+            param.full_clean()
+            self.assertIsNotNone(param.data_numeric)
+
+        invalid_floats = ['88E6352', 'inf', '-inf', 'nan', '3.14.15', '3eee3']
+
+        for value in invalid_floats:
+            param = PartParameter(part=p, template=t, data=value)
+            param.full_clean()
+            self.assertIsNone(param.data_numeric)
+
     def test_metadata(self):
         """Unit tests for the metadata field."""
         for model in [PartParameterTemplate]: