微风不会产生ko可观测值 [英] Breeze does not generate ko observables

问题描述

我在使用简单的MVC4 + ko +微风webapp时遇到以下问题: 查询返回的微风实体是简单的javascript对象，没有ko可观察的对象. 我检查了待办事项示例(正确返回ko可观察值)，但没有找到将微风配置为与ko配合使用(并生成可观察值)的地方. 我尝试添加以下几行，但未更改:

I have the following problem with a simple MVC4 + ko + breeze webapp: the breeze entities returned by a query are simple javascript objects, without ko observables. I inspected the todo sample (which correctly returnes ko observables) and I didn't find the place where breeze is configured to work with ko (and generate observables). I tried adding the following lines, but nothing changed:

var core = breeze.core;
var entityModel = breeze.entityModel;

core.config.setProperties({
    trackingImplementation:     entityModel.entityTracking_ko,
    remoteAccessImplementation: entityModel.remoteAccess_webApi
});

在此先感谢您的帮助

推荐答案

陷阱！ 问题出在WebApi控制器中缺少几个属性:

gotcha! the problem was in a couple of missing attributes in the WebApi controller:

[JsonFormatter, ODataActionFilter]
public class MyController : ApiController
{
    // my methods...
}

添加[JsonFormatter，ODataActionFilter]后，返回的实体具有预期的ko可观察值！

After adding [JsonFormatter, ODataActionFilter] the returned entities had the expected ko observables!

这篇关于微风不会产生ko可观测值的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！