Added "ProjectRun" model

InvenTree/supplier/models.py

@@ -9,9 +9,9 @@ from part.models import Part
 class Supplier(Company):
     """ Represents a manufacturer or supplier
     """
-    
+
     pass
-    
+
 
 class Manufacturer(Company):
     """ Represents a manfufacturer
@@ -37,13 +37,18 @@ class SupplierPart(models.Model):
     supplier = models.ForeignKey(Supplier,
                                  on_delete=models.CASCADE)
     SKU = models.CharField(max_length=100)
-    
+
     manufacturer = models.ForeignKey(Manufacturer, blank=True, null=True, on_delete=models.CASCADE)
     MPN = models.CharField(max_length=100, blank=True)
-    
+
     URL = models.URLField(blank=True)
     description = models.CharField(max_length=250, blank=True)
 
+    single_price = models.DecimalField(max_digits=10, decimal_places=3)
+
+    # packaging that the part is supplied in, e.g. "Reel"
+    packaging = models.CharField(max_length=50, blank=True)
+
     def __str__(self):
         return "{mpn} - {supplier}".format(
             mpn=self.MPN,
@@ -58,7 +63,7 @@ class SupplierPriceBreak(models.Model):
 
     part = models.ForeignKey(SupplierPart,
                              on_delete=models.CASCADE)
-    quantity = models.IntegerField()
+    quantity = models.PositiveIntegerField()
     cost = models.DecimalField(max_digits=10, decimal_places=3)
     currency = models.CharField(max_length=10,
                                 blank=True)