How to define array of Strings in mongoose?

Question

I want to define a document as

numbers : ["99995", "44444", "666664".....]

The numbers shouldn't start with 0 and length should be 5. Also there should be minimum 1 element

The mongoose schema that I defined in something of this type

numbers: {
  type: [String],
  length : 5,
  validator : (num) => {
      return /[1-9]{1}\d{4}.test(num);
    },
    message: props => `${props.value} is not a valid number!` 
  }    
}

But how should I put a check on the numbers length ie minimum one is required ?

Yves Kipondo · Answer 1 · 2018-09-29T19:05:50.873

2

"when you create a custom validator you can do any thing in your function to validate your data. You must only return true when the vlidation is passed and false if it fails."

validator: (num) => {
    if(num.length == 5) {
         return /[1-9]{1}\d{4}/.test(num); // You forgot to add / at the end of the RegEx
    }
    return false;
}

or you can use the match to validate string with regex instead of creating you own function

numbers: {
     type: [String], match: /^[^0]\d{4}$/
}

edited Sep 29 '18 at 19:05

answered Sep 29 '18 at 18:53

Yves Kipondo

5,289
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But how should I put a check on the numbers length ie minimum one is required ? – Ankuj Sep 29 '18 at 19:14
What is exactly the minimun – Yves Kipondo Sep 29 '18 at 19:41
@YvesKipondo Basically, the author wants to have `numbers` field at least one value, non-empty, rest conditions are for values. – Shivam Pandey Sep 29 '18 at 21:27

score 0 · Answer 2 · answered Sep 29 '18 at 21:30

0

Try required: true

validate: {
    validator: function(values) { 
       // Write validator for each value
    },
    message: "add a custom message"
},
required: [true, "numbers cannot be empty"]

answered Sep 29 '18 at 21:30

Shivam Pandey

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score 0 · Answer 3 · answered Oct 01 '18 at 04:24

This should work for you:

numbers: [{
    type: String,
    length: 5,
    required: [true, 'Why no numbers?'],
    validate: {
      validator: function(num) {
        return /^[1-9]{1}\d{4}$/.test(num);
      },
      message: props => `${props.value} is not a valid phone number!`
    },
  }]

It forces at least one element (via required) and makes sure that you can only save a string which starts with a number bigger than 0, has 4 more characters and is exactly 5 char of length (via the custom validate function which uses regEx to test.

How to define array of Strings in mongoose?

3 Answers3