Breeze registerEntityTypeCtor not working

Question

I am working on a Hottowel project and I want to format some data passed on from database to Breeze, but it looks like the ctor is not getting registered.

What am I doing wrong?

In datacontext.js:

    var manager = configureManager();

    function configureManager() {
        var mng = new breeze.EntityManager('breeze/data');
        breeze.NamingConvention.camelCase.setAsDefault();
        model.configureMetadataStore(mng.metadataStore);

        return mng;
    }

In model.js:

    function configureMetadataStore(metadataStore) {
        metadataStore.registerEntityTypeCtor
            ('UserInfo', null, userInfoInitializer);
    }

    function userInfoInitializer() {
        if (this.Email == "")
            this.Email = '---';

        this.CreateDate = formatDateTime(this.CreateDate);
    }

    function formatDateTime(DateTime) {
        return moment.utc(DateTime).format('DD. MM. YYYY. [у] hh:mm');
    }

Datacontext has a reference to model, the data is transferred from database and appears on the screen, but is not formatted. console.log() calls from userInfoInitializer() are not appearing.

Answer 1

When I am constructing an entity, my constructor needs to have an entity to construct. I have not tried your above code but I believe that Breeze passes an entity in and you need to give that entity properties. Using this. MAY work but it is the first thing that stands out to me.

function userInfoInitializer(user) {
    if (user.Email == "")
        user.Email = "---";

2nd - What is your entity named in your model? Is it UserInfo or just User? You probably already know this but you need to make sure when you are adding a constructor you use the properly named Entity.

3rd - If you are using camelCase then you need to leave the first letter of the property lowercase. Ex . user.email and user.createDate.

Last, I can't tell if you are creating a 'createDate' in the constructor or that is being passed from your model. If it is indeed a property you are creating I would recommend making it an knockout observable or computed property. If it is coming from the database then you need to do something like

if (!user.createDate) { } //set it 

Remember that all of the entities being returned from the database will be given that property, so if you have entities that already have a createDate in your example you are overriding that date. If you want to set createDate to now then I would move that into your method where you are creating the object.