prepend source to loc field

Author: AlbertDeFusco

pydantic_settings/main.py

@@ -427,9 +427,7 @@ def _settings_build_values(
                         for line in line_errors:
                             if line.get("type", "") == "missing":
                                 continue
-                            ctx = line.get("ctx", {})
-                            ctx["source"] = source_name
-                            line['ctx'] = ctx
+                            line['loc'] = [source_name] + line['loc']
                             details = InitErrorDetails(**line)
                             all_line_errors.append(details)
 

tests/test_multi_source.py

@@ -58,23 +58,20 @@ def settings_customise_sources(
 
     assert exc_info.value.errors(include_url=False) == [
         {
-            'ctx': {'source': 'JsonConfigSettingsSource'},
             'input': 0,
-            'loc': ('foobar',),
+            'loc': ('JsonConfigSettingsSource', 'foobar',),
             'msg': 'Input should be a valid string',
             'type': 'string_type',
         },
         {
-            'ctx': {'source': 'EnvSettingsSource'},
             'input': 'a',
-            'loc': ('nested', 'nested_field'),
+            'loc': ('EnvSettingsSource', 'nested', 'nested_field'),
             'msg': 'Input should be a valid integer, unable to parse string as an integer',
             'type': 'int_parsing'
         },
         {
-            'ctx': {'source': 'InitSettingsSource'},
             'input': 0,
-            'loc': ('null_field',),
+            'loc': ('InitSettingsSource', 'null_field',),
             'msg': 'Input should be a valid string',
             'type': 'string_type'
         },

tests/test_settings.py

@@ -485,9 +485,9 @@ class AnnotatedComplexSettings(BaseSettings, validate_each_source=True):
         AnnotatedComplexSettings()
     assert exc_info.value.errors(include_url=False) == [
         {
-            'ctx': {'actual_length': 1, 'field_type': 'List', 'min_length': 2, 'source': 'EnvSettingsSource'},
+            'ctx': {'actual_length': 1, 'field_type': 'List', 'min_length': 2},
             'input': ['russet'],
-            'loc': ('apples',),
+            'loc': ('EnvSettingsSource', 'apples',),
             'msg': 'List should have at least 2 items after validation, not 1',
             'type': 'too_short',
         }
@@ -1141,10 +1141,9 @@ class Settings(BaseSettings):
     assert exc_info.value.errors(include_url=False) == [
         {
             'type': 'extra_forbidden',
-            'loc': ('f',),
+            'loc': ('DotEnvSettingsSource', 'f',),
             'msg': 'Extra inputs are not permitted',
-            'input': 'random value',
-            'ctx': {'source': 'DotEnvSettingsSource'}
+            'input': 'random value'
         }
     ]