allow setting token in user settings (#4)

src/django_opfield/conf.py

@@ -7,6 +7,7 @@
 from typing import Any
 
 from django.conf import settings
+from django.core.exceptions import ImproperlyConfigured
 
 OPFIELD_SETTINGS_NAME = "DJANGO_OPFIELD"
 
@@ -38,7 +39,15 @@ def OP_CLI_PATH(self) -> Path:
 
     @property
     def OP_SERVICE_ACCOUNT_TOKEN(self) -> str:
-        return os.environ.get("OP_SERVICE_ACCOUNT_TOKEN", "")
+        if user_token := self._get_user_settings("OP_SERVICE_ACCOUNT_TOKEN"):
+            token = user_token
+        else:
+            token = os.environ.get("OP_SERVICE_ACCOUNT_TOKEN", None)
+
+        if not token:
+            raise ImproperlyConfigured("OP_SERVICE_ACCOUNT_TOKEN is not set")
+
+        return token
 
 
 app_settings = AppSettings()

src/django_opfield/fields.py

@@ -40,14 +40,14 @@ def contribute_to_class(
         super().contribute_to_class(cls, name, private_only)
 
         def get_secret(self: models.Model) -> str | None:
-            if not app_settings.OP_SERVICE_ACCOUNT_TOKEN:
-                raise ValueError("OP_SERVICE_ACCOUNT_TOKEN is not set")
-            try:
-                op = app_settings.OP_CLI_PATH
-            except ImportError as err:
-                raise err
+            op = app_settings.OP_CLI_PATH
             op_uri = getattr(self, name)
-            result = subprocess.run([op, "read", op_uri], capture_output=True)
+            op_token = app_settings.OP_SERVICE_ACCOUNT_TOKEN
+            result = subprocess.run(
+                [op, "read", op_uri],
+                capture_output=True,
+                env={"OP_SERVICE_ACCOUNT_TOKEN": op_token},
+            )
             if result.returncode != 0:
                 raise ValueError(
                     f"Could not read secret from 1Password: {result.stderr.decode('utf-8')}"

tests/test_fields.py

@@ -5,6 +5,7 @@
 from unittest.mock import patch
 
 import pytest
+from django.core.exceptions import ImproperlyConfigured
 from django.core.exceptions import ValidationError
 from django.db import models
 
@@ -88,7 +89,7 @@ def test_get_secret(mock_run):
     secret = model.op_uri_secret
 
     mock_run.assert_called_once_with(
-        [ANY, "read", "op://vault/item/field"], capture_output=True
+        [ANY, "read", "op://vault/item/field"], capture_output=True, env=ANY
     )
     assert secret == "secret value"
 
@@ -100,7 +101,7 @@ def test_get_secret_no_token(mock_run):
 
     model = TestModel(op_uri="op://vault/item/field")
 
-    with pytest.raises(ValueError) as exc_info:
+    with pytest.raises(ImproperlyConfigured) as exc_info:
         _ = model.op_uri_secret
 
     assert "OP_SERVICE_ACCOUNT_TOKEN is not set" in str(exc_info.value)