Question

我正在使用ember 2.7.0。虽然手动刷新页面ember清除了ember-data以及我们的查询参数，所以我无法在刷新时加载setupController中的页面。是否有任何可能的方法来保留模型和＆amp;查询参数，至少保留查询参数可以重新加载我的页面。

route.js

{
  "dependencies": {
    "Microsoft.AspNet.WebApi.Client": "5.2.3",
    "Microsoft.AspNetCore.Diagnostics": "1.0.0",
    "Microsoft.AspNetCore.Mvc": "1.0.0",
    "Microsoft.AspNetCore.Mvc.WebApiCompatShim": "1.0.0",
    "Microsoft.AspNetCore.Razor": "1.0.0",
    "Microsoft.AspNetCore.Razor.Tools": {
      "version": "1.0.0-preview1-final",
      "type": "build"
    },
    "Microsoft.AspNetCore.Server.IISIntegration": "1.0.0",
    "Microsoft.AspNetCore.Server.Kestrel": "1.0.0",
    "Microsoft.AspNetCore.StaticFiles": "1.0.0",
    "Microsoft.Extensions.Configuration.EnvironmentVariables": "1.0.0",
    "Microsoft.Extensions.Configuration.Json": "1.0.0",
    "Microsoft.Extensions.DependencyInjection": "1.0.0",
    "Microsoft.Extensions.Logging": "1.0.0",
    "Microsoft.Extensions.Logging.Console": "1.0.0",
    "Microsoft.Extensions.Logging.Debug": "1.0.0",
    "Microsoft.Net.Http.Server": "1.0.0-beta6",
    "Microsoft.VisualStudio.Web.BrowserLink.Loader": "14.0.0",
    "NLog": "4.3.7",
    "NLog.Extensions.Logging": "1.0.0-rtm-alpha4",
    "NLog.Interface": "3.2.1",
    "PostSharp": "4.3.15"
  },

  "tools": {
    "Microsoft.AspNetCore.Razor.Tools": {
      "version": "1.0.0-preview1-final",
      "imports": "portable-net45+win8+dnxcore50"
    },
    "Microsoft.AspNetCore.Server.IISIntegration.Tools": {
      "version": "1.0.0-preview1-final",
      "imports": "portable-net45+win8+dnxcore50"
    }
  },

  "frameworks": {
    "net452": {
      "dependencies": {
        "JECodingTest.Business": {
          "target": "project"
        }
      }
    }
  },

  "buildOptions": {
    "emitEntryPoint": true,
    "preserveCompilationContext": true
  },

  "publishOptions": {
    "include": [
      "wwwroot",
      "Views",
      "appsettings.json",
      "web.config"
    ]
  },

  "scripts": {
    "prepublish": [ "npm install", "bower install", "gulp clean", "gulp min" ],
    "postpublish": [ "dotnet publish-iis --publish-folder %publish:OutputPath% --framework %publish:FullTargetFramework%" ]
  }
}

任何帮助都应该是值得的。

根据Adam Cooper评论编辑setupController：

model(params) {   
  return this.store.peekRecord("book",params.book_id);
},

setupController(controller,model,params){
  if(!model){
    //fetch book record again if the model is null
  }
  controller.set('isdn',params.queryParams.isdn);
  controller.set('book',model);
}

页面在“findRecord”返回promise之前呈现。是否有任何方法可以停止页面呈现，直到找到记录来解析承诺？

Answer 1

您需要为路线生成实际控制器，然后在控制器中定义queryParams属性。看起来你试图抓住的查询参数是isdn所以你的控制器看起来应该是这样的：

export default Ember.Controller.extend({
  queryParams: ['isdn']
});

Answer 2

您正在设置路线属性而不是控制器..

setupController(controller, model, params){
var isdn = params.queryParams.msisdn;
controller.set('isdn', isdn);
if(!model){
    this.store.findRecord('book', isdn).then((customer) => {
    controller.set('book', customer);
}, (resp, status) => {
    controller.set('errorMessage', `Book with this ${isdn} does not exist.`);
    controller.set('book', []);
});
}else{
    controller.set('device', model);
}

}

只有控制器属性才能装饰模板。

您甚至可以尝试下面的内容，为什么不给模型挂钩解析的机会，因为这将等待Promises解决。

model(params) {   
    var result = this.store.peekRecord("book",params.book_id);
    if(result !== null){
       result= this.store.findRecord('book', params.book_id)
    }
  return result;
}
setupController(controller,model){    
    controller.set('book',model);
}

Ember如何在手动刷新页面时保留查询参数？

2 个答案: