Add "default_expiry" field to Part model

InvenTree/part/forms.py

@@ -181,6 +181,7 @@ class EditPartForm(HelperForm):
         'keywords': 'fa-key',
         'link': 'fa-link',
         'IPN': 'fa-hashtag',
+        'default_expiry': 'fa-stopwatch',
     }
 
     bom_copy = forms.BooleanField(required=False,
@@ -228,6 +229,7 @@ class EditPartForm(HelperForm):
             'link',
             'default_location',
             'default_supplier',
+            'default_expiry',
             'units',
             'minimum_stock',
             'trackable',

InvenTree/part/migrations/0061_auto_20210104_2331.py

@@ -0,0 +1,36 @@
+# Generated by Django 3.0.7 on 2021-01-04 12:31
+
+import django.core.validators
+from django.db import migrations, models
+import django.db.models.deletion
+
+
+class Migration(migrations.Migration):
+
+    dependencies = [
+        ('company', '0031_auto_20210103_2215'),
+        ('part', '0060_merge_20201112_1722'),
+    ]
+
+    operations = [
+        migrations.AddField(
+            model_name='part',
+            name='default_expiry',
+            field=models.PositiveIntegerField(default=0, help_text='Expiry time (in days) for stock items of this part', validators=[django.core.validators.MinValueValidator(0)], verbose_name='Default Expiry'),
+        ),
+        migrations.AlterField(
+            model_name='part',
+            name='default_supplier',
+            field=models.ForeignKey(blank=True, help_text='Default supplier part', null=True, on_delete=django.db.models.deletion.SET_NULL, related_name='default_parts', to='company.SupplierPart', verbose_name='Default Supplier'),
+        ),
+        migrations.AlterField(
+            model_name='part',
+            name='minimum_stock',
+            field=models.PositiveIntegerField(default=0, help_text='Minimum allowed stock level', validators=[django.core.validators.MinValueValidator(0)], verbose_name='Minimum Stock'),
+        ),
+        migrations.AlterField(
+            model_name='part',
+            name='units',
+            field=models.CharField(blank=True, default='', help_text='Stock keeping units for this part', max_length=20, null=True, verbose_name='Units'),
+        ),
+    ]

InvenTree/part/models.py

@@ -291,11 +291,12 @@ class Part(MPTTModel):
         keywords: Optional keywords for improving part search results
         IPN: Internal part number (optional)
         revision: Part revision
-        is_template: If True, this part is a 'template' part and cannot be instantiated as a StockItem
+        is_template: If True, this part is a 'template' part
         link: Link to an external page with more information about this part (e.g. internal Wiki)
         image: Image of this part
         default_location: Where the item is normally stored (may be null)
         default_supplier: The default SupplierPart which should be used to procure and stock this part
+        default_expiry: The default expiry duration for any StockItem instances of this part
         minimum_stock: Minimum preferred quantity to keep in stock
         units: Units of measure for this part (default='pcs')
         salable: Can this part be sold to customers?
@@ -722,15 +723,34 @@ class Part(MPTTModel):
         # Default to None if there are multiple suppliers to choose from
         return None
 
-    default_supplier = models.ForeignKey(SupplierPart,
+    default_supplier = models.ForeignKey(
-                                         on_delete=models.SET_NULL,
+        SupplierPart,
-                                         blank=True, null=True,
+        on_delete=models.SET_NULL,
-                                         help_text=_('Default supplier part'),
+        blank=True, null=True,
-                                         related_name='default_parts')
+        verbose_name=_('Default Supplier'),
+        help_text=_('Default supplier part'),
+        related_name='default_parts'
+    )
 
-    minimum_stock = models.PositiveIntegerField(default=0, validators=[MinValueValidator(0)], help_text=_('Minimum allowed stock level'))
+    default_expiry = models.PositiveIntegerField(
+        default=0,
+        validators=[MinValueValidator(0)],
+        verbose_name=_('Default Expiry'),
+        help_text=_('Expiry time (in days) for stock items of this part'),
+    )
 
-    units = models.CharField(max_length=20, default="", blank=True, null=True, help_text=_('Stock keeping units for this part'))
+    minimum_stock = models.PositiveIntegerField(
+        default=0, validators=[MinValueValidator(0)],
+        verbose_name=_('Minimum Stock'),
+        help_text=_('Minimum allowed stock level')
+    )
+
+    units = models.CharField(
+        max_length=20, default="",
+        blank=True, null=True,
+        verbose_name=_('Units'),
+        help_text=_('Stock keeping units for this part')
+    )
 
     assembly = models.BooleanField(
         default=False,

InvenTree/part/templates/part/detail.html

@@ -109,6 +109,13 @@
             <td>{{ part.minimum_stock }}</td>
         </tr>
         {% endif %}
+        {% if part.default_expiry > 0 %}
+        <tr>
+            <td><span class='fas fa-stopwatch'></span></td>
+            <td><b>{% trans "Stock Expiry Time" %}</b></td>
+            <td>{{ part.default_expiry }} {% trans "days" %}</td>
+        </tr>
+        {% endif %}
         <tr>
             <td><span class='fas fa-calendar-alt'></span></td>
             <td><b>{% trans "Creation Date" %}</b></td>