methods-statics.md

Methods

Methods can be defined by calling the 'method' method of the schema you wish to attach it to and passing a JSON object containing the method.

Adding a method to a model

AccountSchema.method({
  changeEmail: function(edit_email,callback){
    this.email = edit_email;
    this.save(callback);
  }
});

You can now call this by doing something like

// Assuming you've obtained an account document model instance from mongo called a
a.changeEmail('example@somedomain.com',function(){
  console.log('changed account email');
});

Statics

Similar to methods, statics can be defined by calling the 'static' method of the schema you wish to attach it to and passing a JSON object containing the method. Here because it is a static you no longer have access to 'this'.

Adding a static function to the model

AccountSchema.static({
    hashPassword: function(unhashed_password){
    var salt = '_should_make_this_salt_dynamic';
    var hash = hashlib.sha1(unhashed_password+salt);
    return hash;
  }
});

You can now call this by doing something like

// Account is the overall mongoose model not an instance
var hashed_pw = Account.hashPassword('mypassword');