fix bug of inventory entry - fix weight of quotas

apps/pos_device/models.py

@@ -14,12 +14,15 @@ class ProviderCompany(BaseModel):
         UserRelations,
         related_name='pos_provider',
         on_delete=models.CASCADE,
-        null=True
+        null=True,
     )
     name_fa = models.CharField(max_length=250, null=True)
     name_en = models.CharField(max_length=250, null=True)
     activation = models.BooleanField(default=False)
 
+    class Meta:
+        unique_together = ('user_relation', 'name_fa')
+
     def __str__(self):
         return f'Payment Company: {self.name_fa}-{self.id}'
 
@@ -175,6 +178,7 @@ class POSClientAttribute(BaseModel):
     ], null=True)
     required = models.BooleanField(default=False)
     choices = ArrayField(base_field=models.CharField(max_length=150), null=True, blank=True)
+    custom_field = models.BooleanField(default=False)
 
     def __str__(self):
         return f'attribute: {self.key}-{self.field_type}'
@@ -242,7 +246,7 @@ class StakeHolders(BaseModel):
     organization = models.ForeignKey(
         Organization,
         on_delete=models.CASCADE,
-        related_name='stake_holders',
+        related_name='pos_stake_holders',
         null=True
     )
     share_percent = models.FloatField(default=0)
@@ -251,4 +255,4 @@ class StakeHolders(BaseModel):
         return f'Device: {self.assignment.device.serial}-organization: {self.organization.name}'
 
     def save(self, *args, **kwargs):
-        return super(StakeHolders, self).save(*args, **kwargs)
+        return super(StakeHolders, self).save(*args, **kwargs)