Part parameter update (#3605)

* Adds 'description' field to PartParameterTemplate model

* Add 'description' field to API, update settings table

* Bump API version

* Allow more characters in PartParameterTemplate name

InvenTree/part/migrations/0085_partparametertemplate_description.py

@@ -0,0 +1,18 @@
+# Generated by Django 3.2.15 on 2022-08-24 12:09
+
+from django.db import migrations, models
+
+
+class Migration(migrations.Migration):
+
+    dependencies = [
+        ('part', '0084_partcategory_icon'),
+    ]
+
+    operations = [
+        migrations.AddField(
+            model_name='partparametertemplate',
+            name='description',
+            field=models.CharField(blank=True, help_text='Parameter description', max_length=250, verbose_name='Description'),
+        ),
+    ]

InvenTree/part/models.py

@@ -2369,7 +2369,7 @@ class PartTestTemplate(models.Model):
 
 def validate_template_name(name):
     """Prevent illegal characters in "name" field for PartParameterTemplate."""
-    for c in "!@#$%^&*()<>{}[].,?/\\|~`_+-=\'\"":  # noqa: P103
+    for c in "\"\'`!?|":  # noqa: P103
         if c in str(name):
             raise ValidationError(_(f"Illegal character in template name ({c})"))
 
@@ -2424,6 +2424,13 @@ class PartParameterTemplate(models.Model):
 
     units = models.CharField(max_length=25, verbose_name=_('Units'), help_text=_('Parameter Units'), blank=True)
 
+    description = models.CharField(
+        max_length=250,
+        verbose_name=_('Description'),
+        help_text=_('Parameter description'),
+        blank=True,
+    )
+
 
 class PartParameter(models.Model):
     """A PartParameter is a specific instance of a PartParameterTemplate. It assigns a particular parameter <key:value> pair to a part.

InvenTree/part/serializers.py

@@ -240,6 +240,7 @@ class PartParameterTemplateSerializer(InvenTreeModelSerializer):
             'pk',
             'name',
             'units',
+            'description',
         ]