共享模板必须标记为 templateShareable:true 错误 [英] Shared Template Must Be Marked with templateShareable:true Error

问题描述

我正在使用 SAPUI5 创建一个应用程序(我是这个库的新手)，但我遇到了以下奇怪的错误:

I am creating an application with SAPUI5 (I am new with this library) and I run to the following strange error:

共享模板必须在绑定信息中标记为 templateShareable:true -

A shared template must be marked with templateShareable:true in the binding info -

Codewise，原因是在cartelleDisponibili:cartelleObtained下面的Promise里面:

Codewise, the cause is to be found in cartelleDisponibili: cartelleObtained inside the following Promise:

new Promise(
  function(resolve, reject) {
    cartellaData.results.forEach((cartella, index) => {
      oModel.read("/SheetSet", {
        filters: [
          new sap.ui.model.Filter("ZUSERNAME", sap.ui.model.FilterOperator.EQ, userData.Username),
          new sap.ui.model.Filter("ZTYPE", sap.ui.model.FilterOperator.EQ, 'P'),
          new sap.ui.model.Filter("ZCARTELLA", sap.ui.model.FilterOperator.EQ, cartella.ZCARTELLA),
        ],
        success: function(sheetData){
          var sheetsResults = [];
          for(var sheet = 0; sheet < sheetData.results.length; sheet++){
            sheetsResults.push({
              "Sheet": sheetData.results[sheet].ZSHEET,
              "CanWrite": sheetData.results[sheet].ZCANWRITE ? true : false, 
            });
          }
          cartelle.push({
            "Cartella": cartella.ZCARTELLA,
            "CanWrite": cartella.ZCANWRITE ? true : false,
            "Sheets": sheetsResults,
          });
        },
        error: function(oEvent) {}
      });
    });
  resolve(cartelle);
}).then(function(cartelleObtained) {
  var selectedUser = {
    title: `Utente ${userData.Username}`,
    editUsername: false,
    progNavi: false,
    progProd: true,
    userMainCredentials: {
      userName: userData.Username,
      type: "P",
      isEnabled: userData.isAbilitato,
      isAdmin: userData.isAdmin,
      firstName: userData.Nome,
      lastName: userData.Cognome,
    },
    cartelleDisponibili: cartelleObtained,
  };
  var oJSONModelNewUser = new JSONModel(selectedUser);
  _this.getView().setModel(oJSONModelNewUser, "userModel");
  if (!_this._dShowUser) {
    _this._dShowUser = sap.ui.xmlfragment("cabot.ui.wt.fragment.ShowUser", _this);
    _this.getView().addDependent(_this._dShowUser);
  }
  _this._dShowUser.open();
});

如果我直接向 cartelleDisponibili 传递一个项目数组，则不会抛出错误.我还需要解决这个问题，因为这会导致 UI 中出现一些奇怪的行为.我该如何解决这个问题?

If I pass to cartelleDisponibili an array of items directly, the error is not thrown. I need to fix this issue also because this is causing some little odd behavior in the UI. How can I solve this issue?

推荐答案

您必须使用旧版本的 UI5.至少，错误消息不再是源代码的一部分自 1.38 起.改进后的错误消息说得更多:

You must be using an old version of UI5. At least, the error message is not part of the source code anymore since 1.38. The improved error message says a bit more:

在克隆操作期间，发现模板既未标记为templateShareable:true"，也未标记为templateShareable:false".框架不会破坏模板.这可能会导致错误(例如重复的 ID)或内存泄漏.

During a clone operation, a template was found that neither was marked with 'templateShareable:true' nor 'templateShareable:false'. The framework won't destroy the template. This could cause errors (e.g. duplicate IDs) or memory leaks.

这表明，在某处，您还必须在控件中定义一个聚合绑定，该控件用作更高层次结构级别中另一个聚合绑定的模板.

This indicates that, somewhere, you also must be defining an aggregation binding inside a control which is used as a template for another aggregation binding in an upper hierarchy level.

消除错误信息有两种解决方案(取决于您想要什么):

There are two solutions to get rid of the error message (depending on what you want):

• 如果您想更好地控制模板控件的生命周期，请在每个聚合绑定信息对象.
• 但是，如果您不自己处理此类模板，请让 UI5 通过在每个聚合绑定信息对象中显式禁用 templateShareable(值为 false)来处理它们.

• If you want to have more control over the lifecycle of your template control(s), enable templateShareable (with value true) explicitly in each aggregation binding info object.
• However, if you do not take care of such templates by yourself, let UI5 handle them by explicitly disabling templateShareable (with value false) in each aggregation binding info object.

有关更多信息，请查看文档绑定模板的生命周期 以及 这篇博文 由 Nabi.

For more information, take a look at the documentation Lifecycle of Binding Templates and at this blog post by Nabi.

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