Coverage for nexios\handlers\not_found.py: 68%
34 statements
« prev ^ index » next coverage.py v7.8.0, created at 2025-05-21 20:31 +0100
1import traceback
2import typing
3import http
4from nexios.http import Request, Response
5from nexios.config import get_config
6from nexios.exceptions import NotFoundException
9def generate_html_page(title: str, message: str) -> str:
10 """Generates a simple HTML page without using Jinja2."""
11 return f"""<!DOCTYPE html>
12<html lang="en">
13<head>
14 <meta charset="UTF-8">
15 <meta name="viewport" content="width=device-width, initial-scale=1.0">
16 <title>{title}</title>
17 <style>
18 body {
19 font-family: Arial, sans-serif;
20 text-align: center;
21 margin: 50px;
22 color: #333;
23 }
24 h1 {
25 font-size: 48px;
26 color: #d9534f;
27 }
28 p {
29 font-size: 18px;
30 margin-top: 10px;
31 }
32 </style>
33</head>
34<body>
35 <h1>{title}</h1>
36 <p>{message}</p>
37</body>
38</html>"""
41async def handle_404_error(
42 request: Request,
43 response: Response,
44 exception: NotFoundException,
45) -> typing.Any:
46 """
47 Handles 404 errors dynamically, supporting JSON, HTML, and plain text responses.
49 Args:
50 request: The request object (not used here but kept for flexibility).
51 response: A callable that returns a response.
52 exception: The NotFoundException instance.
53 settings: A dictionary of settings to determine the response format.
55 Returns:
56 A response based on the settings.
57 """
58 settings = get_config()
60 debug = settings.debug or False
61 not_found_config = settings.not_fouund
63 if not_found_config:
64 return_json = not_found_config.return_json
65 custom_message = not_found_config.custom_message
66 show_traceback = not_found_config.show_traceback
67 use_html = not_found_config.use_html
68 else:
69 return_json = True
70 custom_message = "The page you are looking for does not exist."
71 show_traceback = False
72 use_html = True
74 error_message = exception.detail if debug else custom_message
76 if show_traceback and debug:
77 traceback_info = traceback.format_exc()
78 else:
79 traceback_info = None
81 if return_json:
82 error_details: typing.Dict[str, typing.Any] = {
83 "status": 404,
84 "error": http.HTTPStatus(404).phrase,
85 "message": error_message,
86 }
87 if traceback_info:
88 error_details["traceback"] = traceback_info
90 return response.json(error_details, status_code=404)
92 if use_html:
93 html_content = generate_html_page("404 - Not Found", error_message)
94 return response.html(html_content, status_code=404)
96 # Plain Text Fallback
97 return response.text(
98 f"404 - Not Found\n{error_message}",
99 )