express.js - best POST json schema validator

I'm searching for a module to validate POST json requests in my **Express.js** application.

What json schema module do you use in your node.js apps?

I assume node-validator (

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) is not an option here because it works only with strings.

I made [Paperwork](

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), which is a very simple solution for JSON validation. You can do things like:

app.post('/my/route', paperwork({
username: /[a-z0-9]+/,
password: String,
age: Number,
interests: [String],
jobs: [{
company: String,
role: String
},
}, function (req, res) {
// ...
});

It will validate:

{
username: 'brucewayne',
password: 'iambatman',
age: 36,
interests: ['Climbing', 'CQC', 'Cosplay'],
jobs: [{
company: 'Wayne Inc.',
role: 'CEO'
}]
}

Or will silently responds a 400 error with information about what's wrong. Check the doc to do more advanced usages.

I made this - if you are still interested:

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There are a lot of options for those who choose JSON Schema validation rules. Good libs comparison here:

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I recently wrote [express-jsonschema][1]. The main differences with the other validators out there are:

1. You use the standard [json schemas][2] for validation. If you have
written other server side languages you probably have used them
before.
2. It doesn't control how your application responds to invalid
data. It does give you an opportunity to hook in and respond however
you want. In my experience this is something that is nice to
control.

[express-schema-validator][3], [express-validate][4], and
[Paperwork][5] are all great. They each have their own unique syntax for declaring schemas and also control how your app responds to invalid data (i.e. status code and data structure).




[1]:

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[2]:

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[3]:

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[4]:

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[5]:

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