Validate only one path

[samislam]

I have the following long schema:

const mySchema = new mongoose.Schema({
  // some stuff, firstName, lastName ... etc
  password: {
    type: String,
    minLength: 8,
    maxLength: 120,
  }
})

And I am inside one of the routes, I want to run validation on the password filed only. Is there something that I can do in Mongoose such as:

mySchema.fields.password.validate("123") // Error: password is less than 8 characters!

Is there something like that?

[vkarpov15]

mySchema.path('password').doValidate(value, fn). Or you can do doc.validate(['password']).

[samislam]

can you give the documentation link for doValidate()? I couldn't find it, I found .validate() However, it seems like it's exported publicly, I can call it.

[samislam]

What are the arguments for this function? (value, fn), what is fn? is it possible to use the same validations in the schema? the minLength, maxLength, and the others?

[vkarpov15]

fn is the callback. doValidate() is async, but doesn't support promises currently.

[vkarpov15]

const mySchema = new Schema({
  password: {
    type: String,
    validate: v => v.length >= 6
  }
});

mySchema.path('password').doValidate('abcde', function(err) {
  console.log(err); // ValidatorError
});

Does that help?

[samislam]

yes, I have implemented this in my code, thank you.