[feat] trees & [fix] deploy & [fix] some bugs

backend/project/api/tree/serializers.py

@@ -0,0 +1,9 @@
+from rest_framework import serializers
+
+from api.tree.models import Tree
+
+
+class TreeSerializer(serializers.ModelSerializer):
+    class Meta:
+        model = Tree
+        fields = "__all__"