Update routing.md with regex explanations #667
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yusukebe
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May 20, 2025
| app.get('/post/:date{[0-9]+}/:title{[a-z]+}', async (c) => { | ||
| const { date, title } = c.req.param() | ||
| // ^? | ||
| // e.g. /post/2025/my-post -> date = "2025", title = "my-post" (if [a-z-]+) |
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I think the explanation of "my-post" with [a-z-]+ is not necessary. It's just about regexp syntax. So only the following is needed:
e.g. /post/2025/mypost -> date = "2025", title = "mypost"| // | ||
| // This means paths like /file/dog.png will match, making filename "data.png". | ||
| // Paths like /file/.png (empty name part) or /file/data.png.txt (wrong suffix) will not match. | ||
| app.get('/post/:filename{.+\\.png$}', async (c) => { |
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It may not be clear that filename can contain /. For example, make the app as follows:
app.get('/file/:filename{.+\\.png$}', async (c) => {
const { filename } = c.req.param()
// ...
})And explain that accessing /file/foo/bar.png will make filename be foo/bar.png. How about it?
codeOwlAI
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Jun 29, 2025
update dependencies
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A few examples of how to best approach the regex routing :)