How do I handle multiple API endpoints with different paths but the same path parameter in FastAPI?

Multiple API Endpoints with Different Paths but Same Path Parameter in FastAPI

In FastAPI, defining API endpoints with different paths but the same path parameter can be achieved by declaring the endpoints in order. However, a common issue arises when the first endpoint declared in the router is called instead of the intended endpoint when other endpoints with a shared path parameter are triggered.

This issue occurs because FastAPI evaluates endpoints in the order they appear in the router. Consequently, if the endpoint with a shared path parameter (/project/{project_id}/...) is defined first, it will be evaluated first and handle all requests to that path, regardless of the additional path parameter.

Solution:

To resolve this issue, ensure that the endpoints with distinct path parameters are declared before the endpoint with a shared path parameter. This ensures that the correct endpoint is triggered based on the specific path provided.

For instance, consider the following revised router:

<code class="python"># GET API Endpoint 2
@router.get("/project/details/{project_id}")
# ...

# GET API Endpoint 3
@router.get("/project/metadata/{project_id}")
# ...

# GET API Endpoint 1
@router.get("/project/{project_id}/{employee_id}")
# ...</code>

In this updated router, the endpoints with the unique path parameters (/project/details/{project_id} and /project/metadata/{project_id}) are declared first. As a result, when these endpoints are triggered, the corresponding controller method will be correctly executed, and the issue of mismatched controller execution is resolved.

The above is the detailed content of How do I handle multiple API endpoints with different paths but the same path parameter in FastAPI?. For more information, please follow other related articles on the PHP Chinese website!