node-req-check

Request query and body parameter checking.

Usage

The various check methods create a middleware that can be dropped onto your
route. They will check either the query or body parameter of the request
depending on the value of req.method. GET and DELETE requests will use the
req.query, all other methods will use req.body.

``js
const check = require('req-check');

app.get('/search', check.string({name: 'query', required: true}), searchEndpoint);

app.post(
'/user/login',
check.email({name: 'email', required: true}),
check.string({name: 'password', required: true, min: 3}),
userLoginEndpoint
);
`

Available Checks

$3

Checks that a given parameter exists with length constraints. No validation of
the value of the parameter is made other than potentially checking the length.

__Options__:
* name: The name of the parameter to check.
* required: Boolean indicating if the parameter is required.
* min: Integer minimum parameter length.
* max: Integer maximum parameter length.

$3

Checks that the given parameter exists and could be a valid email. The email
validation is minimal since email validation is really complex and hard to get
perfect.

__Options__:
* name: The name of the parameter to check.
* required: Boolean indicating if the parameter is required.

$3

Checks that the given parameter exists and is an array. If the parameter is a
string it will be split first using the delim option.

__Options__:
* name: The name of the parameter to check.
* required: Boolean indicating if the parameter is required.
* min: Integer minimum parameter length.
* max: Integer maximum parameter length.
delim: Delimiter to pass to str.split. Default is /,\s/g.

$3

Checks that the given parameter exists and is an integer. If the parameter is a
string it will be parsed first using the radix option.

__Options__:
* name: The name of the parameter to check.
* required: Boolean indicating if the parameter is required.
* min: Integer minimum parameter value.
* max: Integer maximum parameter value.
* radix: Radix to pass to parseInt. Default is 10`.