[BUG][RUST] Description

Bug Report Checklist

• Have you provided a full/minimal spec to reproduce the issue?
• Have you validated the input using an OpenAPI validator (example)?
• Have you tested with the latest master to confirm the issue still exists?
• Have you searched for related issues/PRs?
• What's the actual output vs expected output?
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Description

Query parameters with deep object and specific properties are not being fully qualified in the api function in Rust. Here is a snippet of what's causing the issue:

name: page
in: query
required: false
description: "In a list return, the data associated with the page number and size returned. 20 results per page, page 2 would be `page[size]=20&page[number]=2`"
explode: true
style: deepObject
schema:
  type: object
  properties:
    number:
      type: number
      description: The page to jump to
    size:
      type: number
      description: The number of resources returned per page.

This generates the following error:

This struct is properly generated, it's just not fully qualified

openapi-generator version

6.0.0

OpenAPI declaration file content or url

https://drive.google.com/file/d/16DDHJZrBgT0OrVbwO85VtmX4RAr54Qoi/view?usp=sharing

Generation Details

./run-in-docker.sh generate -i /gen/public-api.yml -g rust -o /gen/out/openapi

Steps to reproduce

Run the generator, and attempt to compile the code with the rust compiler.

Related issues/PRs

Suggest a fix

It appears the bug is caused here:

modules/openapi-generator/src/main/resources/rust/reqwest/api.mustache -> line 20 col 386

It appears that it only sets up the fully qualified import if it's a body parameter, not a query parameter. In the case of explicit parameters however, it assumes that it would be a core type. I'm not sure how to detect if something is a generated parameter or not however.

cc @nshaaban-cPacket since I know you're working on some rust generator code right now.

Start with modules/openapi-generator/src/main/resources/rust/reqwest/api.mustache, especially line 20, and reproduce the issue with the provided run-in-docker.sh command and OpenAPI declaration. Compile the generated Rust client and inspect the API function's deep-object query parameter handling. Done means the generated code compiles and the explicit query properties are fully qualified.