middleware to conditionally select middlewares
Use conditional middlewares within connect or express.
If condition returns true, then middleware_true is processed. Otherwise it's middleware_false.
Returns: function - function (req, res, next)
| Param | Type | Description |
|---|---|---|
| condition | function |
function (req, res) |
| middleware_true | function |
function (req, res, next) middleware executed if condition returns true |
| [middleware_false] | function |
function (req, res, next) middleware executed if condition returns false |
Example
require('http').createServer(
condition(
function (req, res) { // condition
if (~req.url.indexOf('json')) {
return true
}
},
function (req, res, next) { // middleware which is choosen on condition == true
res.setHeader('Content', 'application/json')
res.end('{ "text": "as json" }\n')
},
function (req, res, next) { // middleware which is choosen on condition == false
res.end('just text\n')
}
)
).listen(3000)If you contribute code to this project, you are implicitly allowing your code to be distributed under the MIT license. You are also implicitly verifying that all code is your original work or correctly attributed with the source of its origin and licence.
Copyright (c) 2015 commenthol (MIT License)
See LICENSE for more info.