Add validator to part name

- Check for 'illegal' characters
- Mostly just as a test for validators!

InvenTree/InvenTree/validators.py

@@ -0,0 +1,15 @@
+"""
+Custom field validators for InvenTree
+"""
+
+from django.core.exceptions import ValidationError
+from django.utils.translation import gettext_lazy as _
+
+
+def validate_part_name(value):
+    # Prevent some illegal characters in part names
+    for c in ['/', '\\', '|', '#', '$']:
+        if c in str(value):
+            raise ValidationError(
+                _('Invalid character in part name')
+            )

InvenTree/part/migrations/0021_auto_20190510_2220.py

@@ -0,0 +1,19 @@
+# Generated by Django 2.2 on 2019-05-10 12:20
+
+import InvenTree.validators
+from django.db import migrations, models
+
+
+class Migration(migrations.Migration):
+
+    dependencies = [
+        ('part', '0020_auto_20190510_2022'),
+    ]
+
+    operations = [
+        migrations.AlterField(
+            model_name='part',
+            name='name',
+            field=models.CharField(help_text='Part name', max_length=100, validators=[InvenTree.validators.validate_part_name]),
+        ),
+    ]

InvenTree/part/models.py

@@ -25,6 +25,7 @@ from django.db.models.signals import pre_delete
 from django.dispatch import receiver
 
 from InvenTree import helpers
+from InvenTree import validators
 from InvenTree.models import InvenTreeTree
 from company.models import Company
 
@@ -172,7 +173,9 @@ class Part(models.Model):
         else:
             return static('/img/blank_image.png')
 
-    name = models.CharField(max_length=100, blank=False, help_text='Part name')
+    name = models.CharField(max_length=100, blank=False, help_text='Part name',
+                            validators=[validators.validate_part_name]
+                            )
 
     variant = models.CharField(max_length=32, blank=True, help_text='Part variant or revision code')