create initial models and mobile test for mojtaba eshaghi

apps/herd/models.py

@@ -0,0 +1,46 @@
+from apps.core.models import BaseModel
+from apps.authentication import models as auth_models
+from django.db import models
+
+
+class Herd(BaseModel):
+    name = models.CharField(max_length=50)
+    photo = models.CharField(max_length=50, null=True)
+    code = models.CharField(max_length=20)
+    postal = models.CharField(
+        max_length=10,
+        help_text="herd postal code", null=True
+    )
+    institution = models.CharField(
+        max_length=20,
+        help_text="herd institution code", null=True
+    )
+    epidemiologic = models.CharField(max_length=18, null=True)  # noqa
+    contractor = models.ForeignKey(
+        auth_models.Organization,
+        on_delete=models.CASCADE,
+        related_name="herd_contractor",
+        null=True
+    )
+    latitude = models.DecimalField(max_digits=22, decimal_places=16, null=True)
+    longitude = models.DecimalField(max_digits=22, decimal_places=16, null=True)
+    unit_unique_id = models.CharField(max_length=20, null=True)
+    activity_types = (
+        ("I", "Industrial"),
+        ("V", "Village"),
+        ("N", "Nomadic")
+    )
+    activity = models.CharField(
+        choices=activity_types,
+        max_length=1,
+        null=True
+    )
+    activity_state = models.BooleanField(default=False)
+    operating_license_state = models.BooleanField(default=False)
+    capacity = models.IntegerField(default=0)
+
+    def __str__(self):
+        return f'{self.name}-{self.code}'
+
+    def save(self, *args, **kwargs):
+        super(Herd, self).save(*args, **kwargs)