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Stefan Dresselhaus

Please join our Slack channel via https://join.slack.com/t/openapi-generator/shared_invite/enQtNzAyNDMyOTU0OTE1LTY5ZDBiNDI5NzI5ZjQ1Y2E5OWVjMjZkYzY1ZGM2MWQ4YWFjMzcyNDY5MGI4NjQxNDBiMTlmZTc5NjY2ZTQ5MGM and we'll only answer questions in the Slack channels moving forward.

@gbrown-ce This gitter is no longer active and maintained. It's only here for the purpose of redirecting people to slack

but to answer your question: try required: true/false to denote optional fields
(i don't use C#, but in Haskell you have to make everything required, otherwise it will always be optional)
Geoff Brown
This is working the opposite way (everything is required). I think I might have found a way with the netcore generator. Thanks for the heads up about the slack!
i have a kinda general question: the openapi-generator to c# is working, right? There are no breaking issues at the moment?
John Kida
Im using openapi-generator for a java/spring project. Its currently generating the server stub with a query param of Map<String, Object> however i need it to generate as a MultiValueMap to support ?id=1&id=2.
What is the correct approach to make sure it generates the stub with the correct class to support this?
hello there
i have an openapi specification split into multiple yaml and json files
swagger-parser-v3 can resolve all reference and combine it into a single model - in memory
now, can I somehow write that model into a new yaml file?
is there some tool that can be used to merge multiple openapi spec files into one?
I just had a brief look into the code generator if it is feasible to integrate it into an API first development process. It does its job to generate a stub but I wonder if anybody integrated it into an automated build. My idea was to edit the yaml file and get the server generated, to a certain degree, e.g. controller level. Has anybody experience with such a setup. Currently it looks like a one shot generator.
Stefan Dresselhaus
@1pinus we use the haskell & python-generator for such things.
@Drezil How do you merge the generated code with the already available? Copy files?
Stefan Dresselhaus
generated code is in a seperate git-submodule. Git pull then does the trick.
and you never need to merge as generated code never gets touched by hand
William Cheng
Is there a way to modify the generated Avro Schema ? Basically any data attribute defined with format: date-time should be tagged with a logical type
Philippe Soares
Hi ! I'm trying to generate a java client from https://api.twitter.com/2/openapi.json, but the generator creates an interface with an invalid name "2Api.java". Is there a way to set a prefix to the interface name the same way we add prefixes to the model classes?
Jonas Jermann
hi, I have this issue: OpenAPITools/openapi-generator#2892
Is anyone familiar how I can force "separate" schema definitions for everything (which seems to be a temporary fix for the above bug)? I use swashbuckle for the opnapi.json generation.
Khairi Husseini
hey everyone. does anyone know how I implement the generated client for typescript-rxjs? I used the typescript generator first in my redux application, however since the models are declared as classes this didn't really work nicely together with the redux store. I never used rxjs and I cannot find any documentation on how to use the client.
Hello everyone. I'm looking for tool that can generate api docs directly from source code, does anyone know if openapi-generator allows to do that?
I have springboot project that currently creates api.json file using swagger-core, but it requires to run the app first. I want to avoid that step
Does anybody know how I can download binary data with a generated client? My problem is that the data is interpreted as JSON which is why the client crashes.
Also: I am using StreamingResponseBody (Spring Boot)
Rakesh Bairi

We have been trying to achieve configuring Swagger on Aspnet Core Identity Server 4 Application, we have added Custom End points to ID4 refered from link.

Swagger Configuration:

Code added on Startup.cs > ConfigureServices(IServiceCollection services)

services.AddSwaggerGen(c =>
c.SwaggerDoc("v1", new OpenApiInfo { Title = "Identity Server Application", Version = "v1" });
Code added on Startup.cs > Configure(IApplicationBuilder app)

  // Enable middleware to serve generated Swagger as a JSON endpoint.
    // Enable middleware to serve swagger-ui (HTML, JS, CSS, etc.),
    // specifying the Swagger JSON endpoint.
    app.UseSwaggerUI(c =>
        c.SwaggerEndpoint("/swagger/v1/swagger.json", "Identity Server Application");

When i run application swagger/index.html only showing Custom Added End Points,its not showing Identity Server Endpoints like {connect/authorize,connect/token,connect/userinfo etc.}

Can any one please give me right direction to achieve above functionality.

swagger reponse coming in OpenApi format
Joseph Chambers
is there a option to generate a single instance because the openapi-generator to creates a new instance for each service.

an example:

const userApi = new UserApi(new Configuration({ baseOptions: {…} }), BASE_URL, axiosInstance);

Joseph Chambers
is there a way so I don't need to create a new instance for the UserApi, ReactionsApi, etc etc?
Joseph Chambers
I should say when I have multiple tags.
Ben Gill
Hey, we are using 5.0.0.SNAPSHOT, and seeing this behaviour on typescript-angular generator: Property 'toISOString' does not exist on type 'string'.
309         return this.httpClient.get<LoadHolidayResponse>(`${this.configuration.basePath}/rest/holidays/loadBetween/${encodeURIComponent(String(contextId))}/${encodeURIComponent(String(contextIdType))}/${encodeURIComponent(String(start.toISOString()))}/${encodeURIComponent(String(end.toISOString()))}`,
caused by @PathVariable("start") @DateTimeFormat(iso = DateTimeFormat.ISO.DATE_TIME) LocalDateTime start,
is anyone actively working on the typescript generator?
William Cheng
Saskia Gennrich
hey everyone. Would anyone see any problem with sorting all objects by key in the yaml spec. Would there be a case where the order of the key value pairs could be important?
For some background, we want to generate a client from an openapi document that is given to us, but our partner makes frequent additions and minor changes to it, and doesn't even preserve the order of the paths entries. Which makes diffing very complicated, which we have to do, because we have to tweak the document to even generate usable code.
I am trying to find a way to generate only the model embedded in the OpenAPI YAML spec & not the API's altogether (language Java), except moving model into a separate yaml is there a way to do that ?
Thibault Duperron
You can disable api and utils generation with "generateApis" and "generateSupportingFiles" parameters to false
Thanks @Zomzog let me try...
couldn't find generateApis in https://github.com/OpenAPITools/openapi-generator/tree/master/modules/openapi-generator-gradle-plugin has it been renamed to something else ?
Thibault Duperron
For gradle plugin, it looks not available "out of the box". It must be set like that globalProperties.put("supportingFiles","true") but I have wired behavior on my test.
I will try to look at it after work but maybe you can have a better answer in the slack channel
William Cheng
Aaron Tye
Hello, I have an apidoc with schemas that have "id" and "_id" properties. When I use the go generator, the resulting structs have multiple id fields which causes errors. The underscore isn't being handled. Is this expected behavior? Is there an option or configuration to skip/ignore fields?
type Example struct {
    Id int32 `json:"id"`
    Id *string `json:"_id,omitempty"`
2 replies
Michael Mangeng

Hi, i've got a question about Java Annotation Schema definition and generation of Java-Stubs. I'm not sure what i do wrong or if there is a bug in the generator. My schema looks like:

            summary = "Parameter offset and size are used for pagination. Size is capped at 10000.",
            method = "POST",
            requestBody = @RequestBody(
                    required = true, content = @Content(schema = @Schema(implementation = SearchRequest.class))),
            responses = @ApiResponse(
                    content = @Content(array = @ArraySchema(
                        arraySchema = @Schema(implementation = PaginatedSequence.class),
                        schema = @Schema(implementation = Org.class)
public PaginatedSequence<Org> searchOrg(int offset, int size);

But the generated client stub method has the signature:

public List<Org> searchOrg(Integer offset, Integer size, SearchRequest searchRequest) {...}

My Problem is with the return type. The "PaginatedSequence" holds the fields items,offset,size,count to enable Pagination. With the usage of java.util.List instead of PaginatedSequence, those are gone.

I would like to get the same return type for the generated method as for the method in the interface. Maybe somebody can drop me a hint what i can do to get the desired results.