Make mongoose string schema type default value as blank and make the field optional

Question

My test schema with the mongoose in nodejs contains the following fields:

testschema = mongoose.Schema({

         name:{

    type:String,

    required:true,

    unique:true

  },

  image:{

    type:String,

    required:true

  },

  category:{

    type:String

  },

});

I want to make the category field in my schema as optional and if the user didn't provide any value to that optional field then it should be set to blank by default. How can I make the category field optional?

Answer 1

In MongoDB, you just have to set the default field as ''. Refer to the following code:

category: {

    type: String,

    default: ''

}

If the user didn't provide the value to the category value then by default it will set to '' which means blank.