IPN must match regex validator (if one is provided)

InvenTree/InvenTree/validators.py

@@ -6,6 +6,10 @@ from django.conf import settings
 from django.core.exceptions import ValidationError
 from django.utils.translation import gettext_lazy as _
 
+from common.models import InvenTreeSetting
+
+import re
+
 
 def allowable_url_schemes():
     """ Return the list of allowable URL schemes.
@@ -35,6 +39,17 @@ def validate_part_name(value):
                 _('Invalid character in part name')
             )
 
+def validate_part_ipn(value):
+    """ Validate the Part IPN against regex rule """
+
+    pattern = InvenTreeSetting.get_setting('part_ipn_regex')
+
+    if pattern:
+        match = re.search(pattern, value)
+
+        if match is None:
+            raise ValidationError(_('IPN must match regex pattern') + " '{pat}'".format(pat=pattern))
+
 
 def validate_tree_name(value):
     """ Prevent illegal characters in tree item names """

InvenTree/part/migrations/0028_auto_20200203_1007.py

@@ -0,0 +1,19 @@
+# Generated by Django 2.2.9 on 2020-02-03 10:07
+
+import InvenTree.validators
+from django.db import migrations, models
+
+
+class Migration(migrations.Migration):
+
+    dependencies = [
+        ('part', '0027_auto_20200202_1024'),
+    ]
+
+    operations = [
+        migrations.AlterField(
+            model_name='part',
+            name='IPN',
+            field=models.CharField(blank=True, help_text='Internal Part Number', max_length=100, validators=[InvenTree.validators.validate_part_ipn]),
+        ),
+    ]

InvenTree/part/models.py

@@ -349,7 +349,7 @@ class Part(models.Model):
                               on_delete=models.DO_NOTHING,
                               help_text=_('Part category'))
 
-    IPN = models.CharField(max_length=100, blank=True, help_text=_('Internal Part Number'))
+    IPN = models.CharField(max_length=100, blank=True, help_text=_('Internal Part Number'), validators=[validators.validate_part_ipn])
 
     revision = models.CharField(max_length=100, blank=True, help_text=_('Part revision or version number'))