Resolving rest_framework_nested.routers Error in Docker Deployments

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Understanding the Problem

In your local environment, everything runs smoothly, but once you deploy to Docker, you receive the above error message. The issue arises from using NestedDefaultRouter from the rest_framework_nested package, which should ideally be included when you install the drf-nested-routers package. However, conflicts may occur if another similar package, such as django-rest-framework-nested, is present.

Why Does This Happen?

Package Conflicts: The presence of conflicting packages can cause unexpected behaviors.

Order of Installation: Sometimes, the order in which packages are installed can lead to discrepancies between local and Docker environments.

Environment Differences: Docker containers can differ from your local development setup, such as dependencies and versions.

Step-by-Step Solution

Let's break down the solution to address this issue effectively.

Step 1: Identify Conflicting Packages

First, check whether both drf-nested-routers and django-rest-framework-nested packages are installed in your Docker environment.

Confirm that it includes drf-nested-routers==0.93.4.

Step 2: Uninstall the Conflicting Package

Since the conflict arises from an overlapping package, you'll want to remove django-rest-framework-nested. You can do this by adding the following line to your Dockerfile before you install dependencies:

[[See Video to Reveal this Text or Code Snippet]]

Alternatively, you can run this command within the Docker container if it's already built:

[[See Video to Reveal this Text or Code Snippet]]

Step 3: Rebuild Your Docker Image

After making the changes, ensure to rebuild your Docker image to apply the new modifications:

[[See Video to Reveal this Text or Code Snippet]]

or

[[See Video to Reveal this Text or Code Snippet]]

Step 4: Test the Application

Conclusion