[BUG] [dart-dio] No builder factory for BuiltMap<String, JsonObject>

Description

When describing an object whose type is a List<Dictionary<string, object>> dart-dio fails to generate a proper serializor prompting an exception

Deserializing '[a.b, 123]' to 'BuiltMap<String, JsonObject>' failed due to: Bad state: No builder factory for BuiltMap<String, JsonObject>. Fix by adding one, see SerializersBuilder.addBuilderFactory.

openapi-generator version

"@openapitools/openapi-generator-cli": "~1.0.13-4.3.1"

OpenAPI declaration file content or url

"ModelThatFails": {
        "type": "object",
        "properties": {
          "data": {
            "type": "array",
            "items": {
              "type": "object",
              "additionalProperties": {
                "type": "object",
                "additionalProperties": false
              }
            },
            "nullable": true
          }
        },
        "additionalProperties": false
      },

Command line used for generation

Options besides this only include the swagger file location and package name/version. openapi-generator generate --enable-post-process-file -o headset_mobile_api

Steps to reproduce

Include that model and generate the dart code. Try and deserialize it with this example input '[a.b, 123]'

Related issues/PRs

Suggest a fix

It seems the issue is within the Built_Value serializor or the Model that got generated. Not too knowledgeable in mustache templating

[Tomucha]

OK I have it, in my case I need to add:

  var customSerializers = (standardSerializers.toBuilder()
        ..addBuilderFactory(const FullType(BuiltMap, const [const FullType(String), const FullType(JsonObject)]),
            () => MapBuilder<String, JsonObject>()))
      .build();

   return MyApiClient(dio: ..., serializers: customSerializers);

I guess it should be part of the “default” build.

[kuhnroyal]

Could you guys try the fix from the PR branch please.