Swagger Generator for Frappe Apps

License: MIT

Overview

This project provides an easy-to-use Swagger UI generator for Frappe applications, enabling developers to automatically generate and explore API documentation.

Features

• Automatic Swagger UI Generation: Automatically creates Swagger documentation for all API endpoints in your Frappe custom app.
• Customizable: Specifically designed to work with APIs located in the api folder of each installed Custom Frappe app.
• Pydantic Model Integration: Seamlessly integrates with Pydantic models to display request body structures for APIs.

Setup Instructions

1. API Folder Structure:

   • Ensure your API functions are located in the app_name/api folder within your Frappe app. The generator retrieves API endpoints from this directory.
   • Your project structure should look like this:

     custom_app/
      ├── README.md
      ├── pyproject.toml
      ├── requirements.txt
      ├── custom_app/
      │   ├── api/
      │   │   ├── user.py         # API functions for user operations (POST, PUT, GET, DELETE)
      │   │   └── auth.py         # API functions for auth operations (POST, PUT, GET, DELETE)
      │   ├── basemodels/
      │   │   ├── user.py         # Pydantic models for user APIs
      │   │   └── auth.py         # Pydantic models for auth APIs

2. Generating Swagger JSON:

   • Navigate to the "Swagger Settings" doctype within your Frappe desk.
   • Click the "Generate Swagger JSON" button to create the swagger.json file, which contains the necessary API documentation.

3. Accessing Swagger UI:

   • The Swagger UI is automatically generated and can be accessed via the swagger.html file, allowing you to interact with and test your API.

Steps to Use Swagger UI

1. Define Pydantic Models for POST and PUT Requests:

   import swagger
   from pydantic import BaseModel
   import frappe
   
   class UserModel(BaseModel):
     email: str
     username: str
     age: int
   
   @frappe.whitelist(allow_guest=True)
   @validate_request(UserModel)
   def add_user(validated_data: UserModel):
     try:
        swagger.validate_http_method("POST")
        new_user = frappe.get_doc({
              "doctype": "User",
              "email": validated_data.email,
              "username": validated_data.username,
              "first_name": validated_data.username,
              "age": validated_data.age,
        })
        new_user.insert(ignore_permissions=True)
        return {
              "status": "success",
              "message": "User created successfully",
              "data": new_user.as_dict(),
        }
     except Exception as e:
        swagger.log_api_error()
        return {"status": "error", "message": str(e)}
   
   class UpdateUserModel(BaseModel):
     email: str
     username: str
     age: int
   
   @frappe.whitelist()
   @validate_request(UpdateUserModel)
   def update_user(user_id: str, validated_data: UpdateUserModel):
     try:
        swagger.validate_http_method("PUT")
        user = frappe.get_doc("User", user_id)
        user.email = validated_data.email
        user.username = validated_data.username
        user.first_name = validated_data.username
        user.age = validated_data.age
        user.save(ignore_permissions=True)
        return {
              "status": "success",
              "message": "User updated successfully",
              "data": user.as_dict(),
        }
     except Exception as e:
        swagger.log_api_error()
        return {"status": "error", "message": str(e)}

2. Example of GET and DELETE API Requests:

   @frappe.whitelist()
   def get_customer(user_id: str):
     try:
        swagger.validate_http_method("GET")
        customer = frappe.get_doc("User", user_id)
        return {"status": "success", "data": customer.as_dict()}
     except frappe.DoesNotExistError:
        return {"status": "error", "message": "User does not exist"}
     except Exception as e:
        swagger.log_api_error()
        return {"status": "error", "message": str(e)}
   
   @frappe.whitelist(allow_guest=True)
   def delete_user(user_id: str):
     try:
        swagger.validate_http_method("DELETE")
        frappe.delete_doc("User", user_id, ignore_permissions=True)
        return {"status": "success", "message": f"User with ID {user_id} deleted successfully"}
     except frappe.DoesNotExistError:
        return {"status": "error", "message": "User does not exist"}
     except Exception as e:
        swagger.log_api_error()
        return {"status": "error", "message": str(e)}

Customization and Automation

The Swagger generator is straightforward but can be customized and automated further. Feel free to modify the generator script to add more functionality or automate additional steps as needed.

Contributing

Contributions are welcome! If you find any issues or have suggestions for improvements, feel free to open an issue or submit a pull request.

License

This project is licensed under the MIT license, as outlined in the license.txt file.