Mongoose, run all my validation methods!

MongooseValidateAll (MVA) does a full sweep and runs all your custom validation methods, even if one fails.

What's wrong? Mongoose lets you define multiple custom validation methods, but when the first fails, the subsequent methods are ignored and validation is terminated. This means that if your username is too long and has invalid characters, it'll take two validation sequences to resolve both issues. With MVA, you see both issues immediately.

Installation

Will add to npm soon. In the meantime feel free to fork the repository.

Limitations

In-built validators (such as min and max) are not run are not run by this function because there is no obvious way to access them. They are still run by Mongoose after this validation method is run.

Usage

Check out the example model and tests.

Importing the module

var ValidationGroup = require('mongoose-validate-all');

Defining your validation methods

Your array of validation methods should follow this Mongoose standard:

var fieldValidators = [
  {
     validator: function() {..},
     msg: 'Error Message 1'
  },
  {
     validator: function() {..},
     msg: 'Error Message 2'
  }
];

Using the module

Set the validate property of the Schema to an instance of the module, passing in your validation array as the only parameter:

var User = new Schema({
    username: { 
      type: String, 
      validate: new ValidationGroup(fieldValidators) 
    }
});

Interpreting output

All errors are accessed through the message property.

• If there were no errors, the error object returned by Mongoose will not exist (and hence there will be no message property)
• If there was an error, the message property will be a JSON-encoded array of error messages; use JSON.parse to reconstruct the array