Question

我正在使用Breeze建立一个新的Ng 1项目。我需要向某些实体添加客户端属性。我添加了一个构造函数，但它没有被调用。我添加了一个帖子初始化程序，它也没有被调用。

// a convention can self-register as the default
breeze.NamingConvention.camelCase.setAsDefault();

// create a manager to execute queries
service.manager = new breeze.EntityManager("/api/pts");

// access to the manager's store to add custom client-side properties ..
service.metastore = service.manager.metadataStore;

// entities with client-side properties ..
service.metastore.registerEntityTypeCtor('PtsWine__Pts_BreezeModel', PtsWine, ptsWineInitializer);

var PtsWine = function () {
    debugger;
    this.uiDayUid = 0;
}

var ptsWineInitializer = function (pw) {
    debugger;
    pw.uiDayUid = 0;
}

var query = new service.EntityQuery().from("Wines");
return service.manager.executeQuery(query)
    .then(function (d) {
        debugger;
        /// ???  examining d.results shows 40 PtsWine__Pts_BreezeModel entities but 
        ///      constructor and initializer above were never invoked .. ???
    })
    .fail(function (response) {
        toastr.error("Server Error: failed to retrieve listing.")
    });

Answer 1

初始化序列对我来说似乎不正确。在执行registerEntityTypeCtor时，PtsWine和ptsWineInitializer是未定义的。还记得javascript提升概念吗？ https://developer.mozilla.org/en-US/docs/Glossary/Hoisting

您需要在调用registerEntityTypeCtor之前定义变量。

Breeze - 没有被调用的构造函数

1 个答案: