create initial models and mobile test for mojtaba eshaghi

apps/pos_machine/admin.py

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+from django.contrib import admin
+
+# Register your models here.

apps/pos_machine/apps.py

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+from django.apps import AppConfig
+
+
+class PosMachineConfig(AppConfig):
+    default_auto_field = 'django.db.models.BigAutoField'
+    name = 'apps.pos_machine'

apps/pos_machine/management/commands/command.py

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+# Your custom management commands go here.

apps/pos_machine/permissions.py

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+from rest_framework import permissions
+
+
+# example Code
+class AuthorAllStaffAllButEditOrReadOnly(permissions.BasePermission):
+    edit_methods = ("PUT", "PATCH")
+
+    def has_permission(self, request, view):
+        if request.user.is_authenticated:
+            return True
+
+    def has_object_permission(self, request, view, obj):
+        if request.user.is_superuser:
+            return True
+
+        if request.method in permissions.SAFE_METHODS:
+            return True
+
+        if obj.author == request.user:
+            return True
+
+        if request.user.is_staff and request.method not in self.edit_methods:
+            return True
+
+        return False

apps/pos_machine/services.py

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+# Your services go here

apps/pos_machine/urls.py

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+# Your urls go here