不能在承诺
读取属性“然后”未定义我对这个方法上面的错误：不能在承诺
function addContentType(listItem){ var promise = getContentTypeOfCurrentItem(listItem.ID.toString());
promise.then(function(cname){
listItem['Document Type'] = cname; //we add the doc type to each listItem, not only the last one
});
return promise;
}
整个代码是在这里：
function GetRelatedBillingDocumentsFromList(selectProperties, currentBillCyclePath, clientCode, jobCodes, engagementCode, enhanceFunctions) { $log.info("Retrieving related billing documents for bill cycle with name [" + currentBillCyclePath + "]");
var deferred = $q.defer();
var webUrl = _spPageContextInfo.webAbsoluteUrl;
var viewFields = spService.ConvertSelectPropertiesToViewFields(selectProperties);
// query must return the documents for the same client but in other bill cycles not the current one
var camlQuery = '<View Scope="RecursiveAll">' + viewFields +
'<Query>' +
'<Where>' +
'<And>' +
'<Eq>' +
'<FieldRef Name="ClientCode" />' +
'<Value Type="Text">'+ clientCode + '</Value>' +
'</Eq>' +
'<Neq>' +
'<FieldRef Name="ContentType" />' +
'<Value Type="Computed">Bill Cycle</Value>' +
'</Neq>' +
'</And>' +
'</Where>' +
'</Query>' +
'</View>';
var billCyclesListId = "{c23bbae4-34f7-494c-8f67-acece3ba60da}";
spService.GetListItems(billCyclesListId, camlQuery, selectProperties)
.then(function(listItems) {
var listItemsWithValues = [];
if(listItems) {
var enumerator = listItems.getEnumerator();
var promises = [];
while (enumerator.moveNext()) {
var listItem = enumerator.get_current();
var listItemValues = [];
selectProperties
.forEach(function(propertyName) {
var value = listItem.get_item(propertyName);
if(propertyName === "PwC_JobCodesMulti"){
jobvalue = "";
value.forEach(function(jobvalues){
jobvalue+= jobvalues.get_lookupValue() +";";
})
listItemValues[propertyName] = jobvalue;
}else{
listItemValues[propertyName] = value;
}
});
listItemsWithValues.push(listItemValues);
}
var promises = listItemsWithValues.map(addContentType);
Promise.all(promises).then(youCanUseTheData);
function youCanUseTheData(){
/*
At this point, each listItem holds the 'Document Type' info
*/
listItemsWithValues.forEach(function(listItem) {
var fileDirRef = listItem["FileRef"];
var id = listItem["ID"];
var title = listItem["Title"];
var serverUrl = _spPageContextInfo.webAbsoluteUrl.replace(_spPageContextInfo.webServerRelativeUrl,"");
var dispFormUrl = serverUrl + "/sites/billing/_layouts/15/DocSetHome.aspx?id="+fileDirRef;
//listItem["FileRef"] = dispFormUrl;
//listItem["Bill Cycle"] = dispFormUrl;
var parentLink = listItem["FileRef"];
arrayofstrings = parentLink.split("/");
var billCycleFolderName = arrayofstrings[arrayofstrings.length-2];
arrayofstrings.pop();
var hyperLink = '<a href="' + arrayofstrings.join('/') + '">' + billCycleFolderName + '</a>';
listItem["Bill Cycle"] = hyperLink;
});
}
}
var enhancedListItemValues = spService.SpSearchQuery.EnhanceSearchResults(listItemsWithValues, enhanceFunctions);
deferred.resolve(listItemsWithValues);
})
.catch (function (message) {
deferred.reject();
});
return deferred.promise;
}
function addContentType(listItem){
var promise = getContentTypeOfCurrentItem(listItem.ID.toString());
promise.then(function(cname){
listItem['Document Type'] = cname; //we add the doc type to each listItem, not only the last one
});
return promise;
}
function getContentTypeOfCurrentItem(id) {
var clientContext = new SP.ClientContext.get_current();
var oList = clientContext.get_web().get_lists().getByTitle("Bill Cycles");
listItem = oList.getItemById(id);
clientContext.load(listItem);
listContentTypes = oList.get_contentTypes();
clientContext.load(listContentTypes);
clientContext.executeQueryAsync(
function() {
$log.info("Successfully retrieved getContentTypeOfCurrentItemt");
var ctid = listItem.get_item("ContentTypeId").toString();
var ct_enumerator = listContentTypes.getEnumerator();
while (ct_enumerator.moveNext()) {
var ct = ct_enumerator.get_current();
if (ct.get_id().toString() == ctid) {
var contentTypeName = ct.get_name();
}
}
return Promise.resolve(contentTypeName);
},
function(error, errorInfo) {
$log.warn("Retrieving getContentTypeOfCurrentItem failed");
deferred.reject(errorInfo);
}
);
}
不知道到底是什么我失踪
更新1：
我更改了代码为Niels回复tere，但后来我得到以下错误：
Uncaught Error: The property or field has not been initialized. It has not been requested or the request has not been executed. It may need to be explicitly requested. 如果我做分析的变化，即改变了方法的唯一事情就是返回新希望，其余的是相同的，这是以前的工作。我没有像尼尔斯那样做所有的改变，只需要不费力气就可以完成这项工作。 :)
function GetRelatedBillingDocumentsFromList(selectProperties, currentBillCyclePath, clientCode, jobCodes, engagementCode, enhanceFunctions) { $log.info("Retrieving related billing documents for bill cycle with name [" + currentBillCyclePath + "]");
var deferred = $q.defer();
var webUrl = _spPageContextInfo.webAbsoluteUrl;
var viewFields = spService.ConvertSelectPropertiesToViewFields(selectProperties);
// query must return the documents for the same client but in other bill cycles not the current one
var camlQuery = '<View Scope="RecursiveAll">' + viewFields +
'<Query>' +
'<Where>' +
'<And>' +
'<Eq>' +
'<FieldRef Name="ClientCode" />' +
'<Value Type="Text">'+ clientCode + '</Value>' +
'</Eq>' +
'<Neq>' +
'<FieldRef Name="ContentType" />' +
'<Value Type="Computed">Bill Cycle</Value>' +
'</Neq>' +
'</And>' +
'</Where>' +
'</Query>' +
'</View>';
var billCyclesListId = "{c23bbae4-34f7-494c-8f67-acece3ba60da}";
spService.GetListItems(billCyclesListId, camlQuery, selectProperties)
.then(function(listItems) {
var listItemsWithValues = [];
if(listItems) {
var enumerator = listItems.getEnumerator();
var promises = [];
while (enumerator.moveNext()) {
var listItem = enumerator.get_current();
var listItemValues = [];
selectProperties
.forEach(function(propertyName) {
var value = listItem.get_item(propertyName);
if(propertyName === "PwC_JobCodesMulti"){
jobvalue = "";
value.forEach(function(jobvalues){
jobvalue+= jobvalues.get_lookupValue() +";";
})
listItemValues[propertyName] = jobvalue;
}else{
listItemValues[propertyName] = value;
}
});
listItemsWithValues.push(listItemValues);
}
var promises = listItemsWithValues.map(addContentType);
Promise.all(promises).then(youCanUseTheData);
function youCanUseTheData(){
/*
At this point, each listItem holds the 'Document Type' info
*/
listItemsWithValues.forEach(function(listItem) {
var fileDirRef = listItem["FileRef"];
var id = listItem["ID"];
var title = listItem["Title"];
var serverUrl = _spPageContextInfo.webAbsoluteUrl.replace(_spPageContextInfo.webServerRelativeUrl,"");
var dispFormUrl = serverUrl + "/sites/billing/_layouts/15/DocSetHome.aspx?id="+fileDirRef;
//listItem["FileRef"] = dispFormUrl;
//listItem["Bill Cycle"] = dispFormUrl;
var parentLink = listItem["FileRef"];
arrayofstrings = parentLink.split("/");
var billCycleFolderName = arrayofstrings[arrayofstrings.length-2];
arrayofstrings.pop();
var hyperLink = '<a href="' + arrayofstrings.join('/') + '">' + billCycleFolderName + '</a>';
listItem["Bill Cycle"] = hyperLink;
});
}
}
var enhancedListItemValues = spService.SpSearchQuery.EnhanceSearchResults(listItemsWithValues, enhanceFunctions);
deferred.resolve(listItemsWithValues);
})
.catch (function (message) {
deferred.reject();
});
return deferred.promise;
}
function addContentType(listItem){
return getContentTypeOfCurrentItem(listItem.ID.toString()).then(function(cname){
listItem['Document Type'] = cname; //we add the doc type to each listItem, not only the last one
});
}
function getContentTypeOfCurrentItem(id) {
return new Promise(function (resolve, reject) {
var clientContext = new SP.ClientContext.get_current();
var oList = clientContext.get_web().get_lists().getByTitle("Bill Cycles");
listItem = oList.getItemById(id);
clientContext.load(listItem);
listContentTypes = oList.get_contentTypes();
clientContext.load(listContentTypes);
clientContext.executeQueryAsync(
function() {
$log.info("Successfully retrieved getContentTypeOfCurrentItemt");
var ctid = listItem.get_item("ContentTypeId").toString();
var ct_enumerator = listContentTypes.getEnumerator();
while (ct_enumerator.moveNext()) {
var ct = ct_enumerator.get_current();
if (ct.get_id().toString() == ctid) {
var contentTypeName = ct.get_name();
}
}
resolve(contentTypeName);
},
function(error, errorInfo) {
$log.warn("Retrieving getContentTypeOfCurrentItem failed");
reject(errorInfo);
}
);
});
}
回答：
getContentTypeOfCurrentItem应返回的承诺。假设clientContext.executeQueryAsync不返回一个承诺，因为它使用的处理程序：
function getContentTypeOfCurrentItem(id) { return new Promise(function (resolve, reject) {
var clientContext = new SP.ClientContext.get_current();
var oList = clientContext.get_web().get_lists().getByTitle("Bill
Cycles");
listItem = oList.getItemById(id);
clientContext.load(listItem);
listContentTypes = oList.get_contentTypes();
clientContext.load(listContentTypes);
clientContext.executeQueryAsync(
function() {
$log.info("Successfully retrieved
getContentTypeOfCurrentItemt");
var ctid = listItem.get_item("ContentTypeId").toString();
var ct_enumerator = listContentTypes.getEnumerator();
while (ct_enumerator.moveNext()) {
var ct = ct_enumerator.get_current();
if (ct.get_id().toString() == ctid) {
var contentTypeName = ct.get_name();
}
}
resolve(contentTypeName);
},
function(error, errorInfo) {
$log.warn("Retrieving getContentTypeOfCurrentItem failed");
reject(errorInfo);
}
);
});
}
addContentType可以更容易，以及：
function addContentType(listItem){ return getContentTypeOfCurrentItem(listItem.ID.toString()).then(function(cname) {
listItem['Document Type'] = cname; //we add the doc type to each listItem, not only the last one
}).catch(function(error) {
$log.warn("Server error");
});
}
回答：
getContentTypeOfCurrentItem函数不返回任何内容。只是修改它来回报您的承诺（当然，假设clientContext.executeQueryAsync返回一个承诺）：
function getContentTypeOfCurrentItem(id) { var clientContext = new SP.ClientContext.get_current();
var oList = clientContext.get_web().get_lists().getByTitle("Bill Cycles");
listItem = oList.getItemById(id);
clientContext.load(listItem);
listContentTypes = oList.get_contentTypes();
clientContext.load(listContentTypes);
return clientContext.executeQueryAsync(
function() {
$log.info("Successfully retrieved getContentTypeOfCurrentItemt");
var ctid = listItem.get_item("ContentTypeId").toString();
var ct_enumerator = listContentTypes.getEnumerator();
while (ct_enumerator.moveNext()) {
var ct = ct_enumerator.get_current();
if (ct.get_id().toString() == ctid) {
var contentTypeName = ct.get_name();
}
}
return Promise.resolve(contentTypeName);
},
function(error, errorInfo) {
$log.warn("Retrieving getContentTypeOfCurrentItem failed");
deferred.reject(errorInfo);
}
);
}
以上是 不能在承诺 的全部内容， 来源链接： utcz.com/qa/261706.html
