Fix multipart field value mapping

Author: walsha2

CHANGELOG.md

@@ -1,6 +1,6 @@
 # Changelog
 
-## 0.12.0
+## 0.13.0
 
 * Improved handling of multipart/form-data for client generation
 

lib/src/generators/client.dart

@@ -922,15 +922,15 @@ class $clientName {
             if (isPropRequired) {
               input.add('required $pDartType $pDartName');
               if (isFieldValue) {
-                multipartFields.add("'$pDartName': $pDartName");
+                multipartFields.add("'${p.key}': $pDartName");
               }
             } else {
               final pDefault = p.value.defaultValue;
 
               if (pDefault != null) {
                 input.add("$pDartType $pDartName = '$pDefault'");
                 if (isFieldValue) {
-                  multipartFields.add("'$pDartName': $pDartName");
+                  multipartFields.add("'${p.key}': $pDartName");
                 }
               } else {
                 if (!pDartType.contains('?')) {
@@ -939,7 +939,7 @@ class $clientName {
                 input.add('$pDartType $pDartName');
                 if (isFieldValue) {
                   multipartFields
-                      .add("if ($pDartName != null) '$pDartName': $pDartName");
+                      .add("if ($pDartName != null) '${p.key}': $pDartName");
                 }
               }
             }

lib/src/version.dart

@@ -1,6 +1,6 @@
 name: openapi_spec
 description: OpenAPI Specification generator using native Dart code, as well as an all-in-one parser of existing specifications.
-version: 0.12.0
+version: 0.13.0
 maintainer: Taza Technology LLC
 repository: https://github.com/tazatechnology/openapi_spec
 issue_tracker: https://github.com/tazatechnology/openapi_spec/issues