Missing object properties when using allOf on nested structures (one allOf object inside other)

[jkmrto]

It looks like when using nested structure with allOf the properties of the inner object are not rendered properly by Swagger UI. Eg: render one object that is defined with allOf inside other object that is also using allOf.

For example, with this schema structure:

{
   container: {
          other_field: {}
          inner: {
                other_inner_field
                FieldA
                FieldB
           }
      }
}

Defining Container and Inner as:

defmodule Container do
    def schema do
      %Schema{
        type: :object,
        allOf: [
          ContainerTemplate,
          %Schema{
            type: :object,
            properties: %{
              links: %Schema{
                type: :object,
                properties: %{
                   inner: Inner
                },
              }
            }
          }
        ]
      }
    end
end

defmodule Inner do
    def schema do
      %Schema{
        type: :object,
        allOf: [
          InnerTemplate,
          %Schema{
            type: :object,
            properties: %{
              links: %Schema{
                type: :object,
                properties: %{
                   FieldA: %Schema{type: :string},
                   FieldB: %Schema{type: :string}
                },
              }
            }
          }
        ]
      }
    end
end

Since both Container and Inner objects makes use of allOf, the properties FieldA and FieldB wont be rendered in the Swagger UI.

However, the properties are present on the Schemas generated by open-api-spex, so it doesn't look like an issue on the library, it looks more like an issue in the renderer.

On the other hand, this is a known issue on the Swagger renderer swagger-api/swagger-editor#2765 (comment), and one possible workaround to it is moving the paths field above the components on the JSON generated.

So, if the path field were in the top on the generated JSON specs, the properties of Inner would be rendered properly:

It is possible to control de order of the fields in the JSON specs generated? Thank you