error-page
v0.0.7
Published
Easily send errors in Node.js HTTP servers. Think like the `ErrorDocument` declarations in Apache config files.
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error-page
Easily send errors in Node.js HTTP servers.
Think like the ErrorDocument
declarations in Apache config files.
Usage
var ErrorPage = require('error-page')
http.createServer(function (req, res) {
// returns a function that we use to send error responses
res.error = ErrorPage(req, res, { // options
404: the404HandlerFunction,
5xx: handleAll500s,
403: 'forbidden.ejs', // template name integrates with Templar
400: 'that was bad', // other strings just print out as-is
"*": handleEverythingElse
debug: false // show full stack traces, or just messages
})
// .. some time later ..
// .. we've decided that the page doesn't exist ..
return res.error(404)
// or maybe we decided that the request method is no good...
// Give a little extra bit on the message.
return res.error(405, "Allowed methods: GET, POST, HEAD")
// or maybe they just need to try again in 10 seconds
return res.error(503, {'retry-after':10})
// or maybe we are a teapot
return res.error(418)
// or maybe something threw
try {
blerg()
} catch (er) {
return res.error(er)
}
})
Any arguments to the res.error
function will be interpreted based on
their type:
- Number: the status code (defaults to 500, if it can't find one)
- Error object: Some error that was thrown or raised somewhere (with a stack, etc.)
- Other object: Bag o' headers which get set on the response.
- Function: A handler to use, instead of the one set up initially
- String: If there's a
res.template
from Templar, and it's a valid template name, then it'll use the template as the handler. - String that is not a template: A message (defaults to the
message
property on the Error object, if one was supplied, or the default message associated with the status code.)
The handler (or template) is called with the request and response
objects, and a data
object containing:
data = { message: message
, code: code
, statusCode: code
, error: er
, options: opts
, request: req.method + ' ' + req.url
, headers: req.headers
, url: req.url
}