JavaScript Error extending entity with a observableArray in Breeze via constructor

If I try to extend an entity in Breeze via constructor with something like:

breeze.EntityManager('ServiceUrl').metadataStore.registerEntityTypeCtor(
  'customer',
  function () {
    this.orders = ko.observableArray([]);
  }
);

I get a Knockout error when trying to set the new properties:

myCustomer.orders(newOrders);

The error is:

"Cannot write a value to a ko.computed unless you specify a 'write' option. If you wish to read the current value, don't pass any parameters."

The same work if I add it in the post-construction initializer. Am I doing something wrong?

Answer:1

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