Swagger openapi-typescript-codegen change casing for one model

Question

I know you can change the casing for your project According to the swagger-codegen FAQ you are able to change the casing as such:

modelPropertyNaming Naming convention for the property: 'camelCase', 'PascalCase', 'snake_case' and 'original', which keeps the original name (Default: camelCase)

by using it in your query:

java -jar openapi-generator-cli-4.1.3.jar generate -i C:\Users\ASUS\Desktop\OpenAPICodegen\swagger.json -g typescript-angular -o C:\Users\ASUS\Desktop\OpenAPICodegen\dist --additional-properties modelPropertyNaming=origional

or

dotnet swagger tofile --output ./wwwroot/swagger/v1/swagger.yaml --yaml $(OutputPath)$(AssemblyName).dll v1 --additional-properties modelPropertyNaming=origional

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Q: How can I do it for 1 specific model?

In my project all my models in .NET go from PascalCase to camelCase which is all good. But one of my models represents a model that is being fetched from a JSON file. hence I need only one (1) model to have PascalCase while keeping the others in camelCase. How can i achieve this?

Answer 1

Since there hasn't been much activity i'll post my own answer:

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#1 You have to make your own SchemaFilter

using Microsoft.OpenApi.Models;
using Swashbuckle.AspNetCore.SwaggerGen;

namespace FAKD.Server.Services
{
    public class PascalCaseSchemaFilter<T> : ISchemaFilter
        where T : class
    {
        public void Apply(OpenApiSchema schema, SchemaFilterContext context)
        {
            var properties = context.Type.GetProperties();
            foreach (var property in properties)
            {
                if (context.Type == typeof(T))
                {
                    var propertyName = property.Name;
                    schema.Properties = schema.Properties.ToDictionary(
                        d => d.Key.Substring(0, 1).ToUpper() + d.Key.Substring(1),
                        d => d.Value
                    );
                }
            }
        }
    }
}

#2 Add filter to AddSwaggerGen Options

builder.Services.AddSwaggerGen(spec =>
{
    var filePath = Path.Combine(AppContext.BaseDirectory, "backend.xml");
    spec.IncludeXmlComments(filePath);
    spec.DescribeAllParametersInCamelCase();
    spec.SupportNonNullableReferenceTypes();
    var url = builder.Configuration.GetValue<string>("OpenApi:BaseUrl");
    spec.AddServer(new OpenApiServer { Url = url, Description = "default" });


    spec.SchemaFilter<PascalCaseSchemaFilter<MYMODELHERE>>();

});

#3 Profit

      "ModelA": {
        "type": "object",
        "properties": {
          "id": {
            "type": "string",
            "format": "uuid"
          },
          "type": {
            "type": "string"
          },
          "identificator": {
            "type": "string"
          },
          "approvedBy": {
            "type": "string"
          },
          "reviewed": {
            "type": "boolean"
          },
          "start": {
            "type": "integer",
            "format": "int64"
          },
          "end": {
            "type": "integer",
            "format": "int64"
          },
          "aCount": {
            "type": "integer",
            "format": "int32"
          }
        },
        "additionalProperties": false
      },
      "MYMODELHERE": {
        "type": "object",
        "properties": {
          "Id": {
            "type": "string",
            "format": "uuid"
          },
          "Type": {
            "type": "string"
          },
          "Identificator": {
            "type": "string"
          },
          "ApprovedBy": {
            "type": "string"
          },