Question

在CRM中，我需要启用/禁用电子邮件表单实体中的按钮。如果父实体（事件/案例）状态处于活动状态，则启用该按钮，否则将禁用该按钮。

我目前的设置：

按钮位于“电子邮件实体表单”视图功能区
Button有一个命令调用一些JS函数（这可行）。
该命令具有调用EnableEmailButton
启用规则要求函数返回true（启用）或false（禁用）

JS：

var isCaseOpen = false;
function EnableEmailButton()
{
    var regardingObject = crmForm.all.regardingobjectid.DataValue;
    if(regardingObject)
    {
        var regardingObjectId = regardingObject[0].id;
        regardingObjectId = regardingObjectId.replace('{','').replace('}','');

        GetEntityById(regardingObjectId, "Incident", OnGotIncident);
    }

    return isCaseOpen;
}

function OnGotIncident(incident) {
    if(incident.StateCode.Value == 0)
    {
        isCaseOpen = true;
    }
}

function GetEntityById(entityId, entityName, CallbackFunction) {
    SDK.JQuery.retrieveRecord
    (
        entityId,
        entityName,
        null,
        null,
        function OnSuccess(entity) {
            CallbackFunction(entity);
        },
        function errorHandler(error) {
            alert(error.message);
        }
    );
}

由于retrieveRecord是异步调用，我无法保证何时会收到回复。但是在函数返回isCaseOpen的值之前我需要一个响应。

我该怎么做？

基本上我需要创建一个延迟，直到我得到一个AJAX响应。

Answer 1

我通过编辑Microsoft提供的文件中的SDK.JQuery.retrieveRecord函数来修复此问题。我在函数中添加了一个额外的参数，让我决定调用是否异步。

JS：

retrieveRecord: function (id, type, select, expand, isAsync, successCallback, errorCallback) {
  ///<summary>
  /// Sends an asynchronous request to retrieve a record.
  ///</summary>
  ///<param name="id" type="String">
  /// A String representing the GUID value for the record to retrieve.
  ///</param>
  this._stringParameterCheck(id, "SDK.JQuery.retrieveRecord requires the id parameter is a string.");
  ///<param name="type" type="String">
  /// The Schema Name of the Entity type record to retrieve.
  /// For an Account record, use "Account"
  ///</param>
  this._stringParameterCheck(type, "SDK.JQuery.retrieveRecord requires the type parameter is a string.");
  ///<param name="select" type="String">
  /// A String representing the $select OData System Query Option to control which
  /// attributes will be returned. This is a comma separated list of Attribute names that are valid for retrieve.
  /// If null all properties for the record will be returned
  ///</param>
  if (select != null)
   this._stringParameterCheck(select, "SDK.JQuery.retrieveRecord requires the select parameter is a string.");
  ///<param name="expand" type="String">
  /// A String representing the $expand OData System Query Option value to control which
  /// related records are also returned. This is a comma separated list of of up to 6 entity relationship names
  /// If null no expanded related records will be returned.
  ///</param>
  if (expand != null)
   this._stringParameterCheck(expand, "SDK.JQuery.retrieveRecord requires the expand parameter is a string.");
  ///<param name="isAsync" type="Boolean">
  /// Synchronous or Asynchronous request.
  /// 
  ///</param>
  this._booleanParameterCheck(isAsync, "SDK.JQuery.retrieveRecord requires the isAsync parameter is a boolean.");
  ///<param name="successCallback" type="Function">
  /// The function that will be passed through and be called by a successful response. 
  /// This function must accept the returned record as a parameter.
  /// </param>
  this._callbackParameterCheck(successCallback, "SDK.JQuery.retrieveRecord requires the successCallback parameter is a function.");
  ///<param name="errorCallback" type="Function">
  /// The function that will be passed through and be called by a failed response. 
  /// This function must accept an Error object as a parameter.
  /// </param>
  this._callbackParameterCheck(errorCallback, "SDK.JQuery.retrieveRecord requires the errorCallback parameter is a function.");

  var systemQueryOptions = "";

  if (select != null || expand != null) {
   systemQueryOptions = "?";
   if (select != null) {
    var selectString = "$select=" + select;
    if (expand != null) {
     selectString = selectString + "," + expand;
    }
    systemQueryOptions = systemQueryOptions + selectString;
   }
   if (expand != null) {
    systemQueryOptions = systemQueryOptions + "&$expand=" + expand;
   }
  }

  $.ajax({
   type: "GET",
   contentType: "application/json; charset=utf-8",
   datatype: "json",
   async: isAsync,
   url: this._ODataPath() + type + "Set" + "(guid'" + id + "')" + systemQueryOptions,
   beforeSend: function (xhr) {
    //Specifying this header ensures that the results will be returned as JSON.             
    xhr.setRequestHeader("Accept", "application/json");
   },
   success: function (data, textStatus, xhr) {
    //JQuery does not provide an opportunity to specify a date reviver so this code
   // parses the xhr.responseText rather than use the data parameter passed by JQuery.
    successCallback(JSON.parse(xhr.responseText, SDK.JQuery._dateReviver).d);
   },
   error: function (xhr, textStatus, errorThrown) {
    errorCallback(SDK.JQuery._errorHandler(xhr));
   }
  });
 },

如何在CRM 2011中获取事件状态后启用电子邮件中的功能区按钮？

1 个答案: