list of organizations by province - some changes in quota an models of that

apps/product/models.py

@@ -192,6 +192,8 @@ class SaleUnit(BaseModel):
 
 
 class IncentivePlan(BaseModel):
+    """ incentive plan for every quota """
+
     PLAN_TYPE_CHOICES = (
         ('ILQ', 'increasing livestock quotas'),
         ('SM', 'statistical/monitoring')
@@ -226,6 +228,8 @@ class IncentivePlan(BaseModel):
 
 
 class Quota(BaseModel):
+    """ quota for product with some conditions """
+
     quota_id = models.CharField(max_length=15, null=True)
     quota_code = models.CharField(max_length=15, null=True)
     product = models.ForeignKey(
@@ -240,7 +244,7 @@ class Quota(BaseModel):
         choices=[("rural", "روستایی"), ("industrial", "صنعتی"), ("nomadic", "عشایری")]  # noqa
     )
     has_distribution_limit = models.BooleanField(default=False)
-    distribution_mode = models.CharField(max_length=50, blank=True, null=True)
+    distribution_mode = ArrayField(base_field=models.IntegerField(), blank=True, null=True)
 
     base_price_factory = models.DecimalField(max_digits=12, decimal_places=2)
     base_price_cooperative = models.DecimalField(max_digits=12, decimal_places=2)
@@ -254,6 +258,8 @@ class Quota(BaseModel):
 
 
 class QuotaIncentiveAssignment(BaseModel):
+    """ assign incentive plan to quota """
+
     quota = models.ForeignKey(
         Quota,
         on_delete=models.CASCADE,
@@ -263,7 +269,8 @@ class QuotaIncentiveAssignment(BaseModel):
     incentive_plan = models.ForeignKey(
         IncentivePlan,
         on_delete=models.CASCADE,
-        related_name='quota_assignment'
+        related_name='quota_assignment',
+        null=True
     )
     heavy_value = models.DecimalField(max_digits=12, decimal_places=2)
     light_value = models.DecimalField(max_digits=12, decimal_places=2)
@@ -276,6 +283,8 @@ class QuotaIncentiveAssignment(BaseModel):
 
 
 class QuotaBrokerValue(BaseModel):
+    """ broker attributes value for quota """
+
     quota = models.ForeignKey(
         Quota,
         on_delete=models.CASCADE,
@@ -297,6 +306,8 @@ class QuotaBrokerValue(BaseModel):
 
 
 class QuotaLivestockAllocation(BaseModel):
+    """ livestock allocation to quota """
+
     quota = models.ForeignKey(
         "Quota",
         on_delete=models.CASCADE,