Mongoose - Save array of strings

Question

I can't save an array of strings into my DB using Mongoose.

(Note all code below is simplified for ease of writing here)

So i declare a variable of a person schema I have:

var newPerson = new Person ({     tags: req.body.tags }); 

The schema itself looks like:

var personSchema = new mongoose.Schema({   tags: Array }); 

And when it comes to saving its just a simple:

newPerson.save(function(err) {     //basic return of json }); 

So using Postman I send in an array in the body - however everytime I check the DB, it just shows one entry with the array as a whole i.e. how I sent it:

Any ideas what extra I'm supposed to do?

Answer 1

Write up from my comment:

The way to specify an array of strings in mongoose is like so:

var personSchema = new mongoose.Schema({ tags: [{     type: String }] 

However, the problem here is most-likely to do with Postman as it is sending the 'array' as a string. You can check this by checking the type of req.body.tags like so:

console.log(typeof req.body.tags) 

If this returns a String, make sure to set the content-type in Postman to JSON as seen in this screenshot rather than the default 'form-data' option.

Answer 2

var schema = new Schema({   name:    String,   binary:  Buffer,   living:  Boolean,   updated: { type: Date, default: Date.now },   age:     { type: Number, min: 18, max: 65 },   mixed:   Schema.Types.Mixed,   _someId: Schema.Types.ObjectId,   decimal: Schema.Types.Decimal128,   array: [],   ofString: [String],   ofNumber: [Number],   ofDates: [Date],   ofBuffer: [Buffer],   ofBoolean: [Boolean],   ofMixed: [Schema.Types.Mixed],   ofObjectId: [Schema.Types.ObjectId],   ofArrays: [[]],   ofArrayOfNumbers: [[Number]],   nested: {     stuff: { type: String, lowercase: true, trim: true }   },   map: Map,   mapOfString: {     type: Map,     of: String   } })  // example use  var Thing = mongoose.model('Thing', schema);  var m = new Thing; m.name = 'Statue of Liberty'; m.age = 125; m.updated = new Date; m.binary = Buffer.alloc(0); m.living = false; m.mixed = { any: { thing: 'i want' } }; m.markModified('mixed'); m._someId = new mongoose.Types.ObjectId; m.array.push(1); m.ofString.push("strings!"); m.ofNumber.unshift(1,2,3,4); m.ofDates.addToSet(new Date); m.ofBuffer.pop(); m.ofMixed = [1, [], 'three', { four: 5 }]; m.nested.stuff = 'good'; m.map = new Map([['key', 'value']]); m.save(callback);