create initial models and mobile test for mojtaba eshaghi

apps/livestock/models.py

@@ -0,0 +1,40 @@
+from apps.core.models import BaseModel
+from apps.herd import models as herd_models
+from apps.tag import models as tag_models
+from django.db import models
+
+
+class LiveStock(BaseModel):
+    herd = models.ForeignKey(
+        herd_models.Herd,
+        on_delete=models.CASCADE,
+        related_name="live_stock_herd",
+        null=True
+    )
+    tag = models.ForeignKey(
+        tag_models.Tag,
+        on_delete=models.CASCADE,
+        related_name='livestock_tag',
+        null=True
+    )
+    types = (
+        ('L', 'Light'),
+        ('H', 'Heavy')
+    )
+    type = models.CharField(max_length=1, choices=types)
+    species_type = (
+        ()
+    )
+    species = models.CharField(max_length=1, choices=species_type)
+    birthdate = models.DateTimeField(null=True)
+    gender_type = (
+        (1, 'male'),
+        (2, 'female')
+    )
+    gender = models.IntegerField(choices=gender_type, default=1)
+
+    def __str__(self):
+        return f'{self.get_species_display()}-{self.get_type_display()}'
+
+    def save(self, *args, **kwargs):
+        super(LiveStock, self).save(*args, **kwargs)