https://github.com/ladjs/mongoose-validation-error-transform

Automatically transform Mongoose validation error message(s) to a humanized and readable format
https://github.com/ladjs/mongoose-validation-error-transform

beautiful error handling messages mongo mongodb mongoose mongoosejs parser parsing pretty transform validation

Last synced: about 2 months ago
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Automatically transform Mongoose validation error message(s) to a humanized and readable format

• Host: GitHub
• URL: https://github.com/ladjs/mongoose-validation-error-transform
• Owner: ladjs
• License: mit
• Created: 2017-08-08T00:09:43.000Z (over 7 years ago)
• Default Branch: master
• Last Pushed: 2024-04-15T15:53:27.000Z (8 months ago)
• Last Synced: 2024-10-30T08:03:59.399Z (about 2 months ago)
• Topics: beautiful, error, handling, messages, mongo, mongodb, mongoose, mongoosejs, parser, parsing, pretty, transform, validation
• Language: JavaScript
• Size: 254 KB
• Stars: 8
• Watchers: 1
• Forks: 1
• Open Issues: 2
• Metadata Files:
  • Readme: README.md
  • Funding: .github/FUNDING.yml
  • License: LICENSE

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README

        
# mongoose-validation-error-transform

[![Slack Status][slack-image]][slack-url]

[![NPM version][npm-image]][npm-url]

[![Standard JS Style][standard-image]][standard-url]

[![MIT License][license-image]][license-url]

> Automatically transform [Mongoose][mongoose] validation error message(s) to a humanized and readable format, built for [CrocodileJS][crocodile-url].

## Index

* [Install](#install)

* [Usage](#usage)

* [License](#license)

## Install

```bash

npm install --save mongoose-validation-error-transform

```

> You may also want to use [mongoose-beautiful-unique-validation][mongoose-beautiful-unique-validation] too (see [this comment][comment])!

## Usage

```js

const mongooseValidationErrorTransform = require('mongoose-validation-error-transform');

mongoose.plugin(mongooseValidationErrorTransform, {

  //

  // these are the default options you can override

  // (you don't need to specify this object otherwise)

  //

  // should we capitalize the first letter of the message?

  capitalize: true,

  // should we convert `full_name` => `Full name`?

  humanize: true,

  // how should we join together multiple validation errors?

  transform: function(messages) {

    return messages.join(', ');

  }

});

```

If you have a Mongoose schema defined with a required String field `full_name`,

and if there is an error with a missing `full_name` on a document - then it will

automatically rewrite the message of `full_name is required` to

`Full name is required`.

If there are multiple validation error messages, such as:

* `full_name is required`

* `age is not at least (18)`

Then it will rewrite the error message to `Full name is required, Age is not at least (18)`.

Of course - by modifying the options mentioned above, you can transform the messages however you'd like.

For example, if you'd like to output a `
` HTML tag with `
` for each error (but only of course if there's more than one error):


```js

mongoose.plugin(mongooseValidationErrorTransform, {

  transform: function(messages) {

    if (messages.length === 1) return messages[0];

    return `


${messages.join('

')}

`;

  }

});

```


This would output the following for the previous example:

```html



Full name is required

Age is not at least (18)



```


## License

[MIT](LICENSE) © Nick Baugh

## 

[license-image]: http://img.shields.io/badge/license-MIT-blue.svg

[license-url]: LICENSE

[npm-image]: https://img.shields.io/npm/v/mongoose-validation-error-transform.svg

[npm-url]: https://npmjs.org/package/mongoose-validation-error-transform

[crocodile-url]: https://crocodilejs.com

[standard-image]: https://img.shields.io/badge/code%20style-standard%2Bes7-brightgreen.svg

[standard-url]: https://github.com/crocodilejs/eslint-config-crocodile

[slack-image]: https://img.shields.io/badge/chat-join%20slack-brightgreen

[slack-url]: https://join.slack.com/t/ladjs/shared_invite/zt-fqei6z11-Bq2trhwHQxVc5x~ifiZG0g

[mongoose]: https://github.com/Automattic/mongoose

[comment]: https://github.com/Automattic/mongoose/issues/2284#issuecomment-320810641

[mongoose-beautiful-unique-validation]: https://github.com/matteodelabre/mongoose-beautiful-unique-validation