我在此函数中一直收到未定义的错误。它分为5个单独的函数，我试图在前一个函数完成之后运行，但是使用从前一个函数返回的数据。我可以嵌套所有的回调，但我宁愿使用promises。
var checkedOutReport = function () {
var rootSite = window.location.protocol + "//" + window.location.hostname;
//Create array with each collection site
function getAllSites (){
var d = $q.defer();
var allSites = [];
$().SPServices({
operation: "GetAllSubWebCollection",
completefunc: function (xData,Status){
var result = $(xData.responseXML);
result.find('Web').each(function (){
var self = $(this);
allSites.push({
siteTitle: self.attr('Title'),
siteUrl: self.attr('Url')
})
})
}
})
d.resolve(allSites)
return d.promise;
}
//Get libraries for each siteUrl
function getSiteLibraries (allSites) {
var siteCount = allSites.length;
var listPromise = [];
//Go through each site and find document libraries
for (var i = 0; i < siteCount; i++){
listPromise[i] = $().SPServices({
operation: "GetListCollection",
webURL: allSites[i].siteUrl
})
}
//Promise array contains all lists for each site
//Get libraries for each site
$q.all(listPromise).then(findLibraries(listPromise))
}
function findLibraries (promises){
var d = $q.defer();
var siteCount = promises.length;
var allLibraries = [];
//For each site, find the document libraries
for (var i = 0; i < siteCount; i++){
$(promises[i].responseXML).find("List[ServerTemplate='101']").each(function(){
var self = $(this);
allLibraries.push({
listName = self.attr('Title'),
listId = self.attr('ID'),
siteUrl = allSites[i].siteUrl
})
})
}
console.log(allLibraries);
d.resolve(allLibraries);
return d.promise;
}
//CAML QUERIES
var cQueryOptions = "<QueryOptions><ViewAttributes Scope='RecursiveAll' IncludeRootFolder='True' /></QueryOptions>",
cQueryAllCheckedOutDocuments = '<Query><Where><IsNotNull><FieldRef Name="CheckoutUser" /></IsNotNull></Where></Query>',
cQueryModifiedBySystemAccount = '<Query><Where><Contains><FieldRef Name="Editor" /><Value Type="User">system</Value></Contains></Where></Query>',
cViewFields = "<ViewFields Properties='True' />";
//For each library in site collection, find documents which meet criteria
function searchLibraries (library) {
var libraryCount = library.length;
var itemPromise = [];
for (var i = 0; i < libraryCount; i++){
itemPromise[i] = $().SPServices({
operation: "GetListItems",
webURL: library[i].siteUrl,
listName: library[i].listID,
CAMLViewFields: cViewFields,
CAMLQuery: cQueryAllCheckedOutDocuments
})
}
$q.all(itemPromise).then(parseSearchResult(itemPromise))
}
//Clean up result
function parseSearchResult(result){
var d = $q.defer()
var resultCount = result.length;
var returnedFiles = [];
for(var i = 0; i < resultCount; i++){
$(result[i].responseXML).SPFilterNode("z:row").each(function (){
var self = $(this);
var fileName = self.attr('ows_LinkFilename');
var fileUrl = self.attr('ows_FileDirRef').split("#");
var checkedTo = self.attr('ows_LinkCheckedOutTitle');
var modified = self.attr('ows_Modified');
returnedFiles.push({
fileName: fileName,
fileUrl: fileUrl[1],
checkedTo: checkedTo,
modified: modified
});
})
}
d.resolve(returnedFiles);
return d.promise;
}
getAllSites()
.then(
getSiteLibraries(allSites)
)
.then(
searchLibraries(allLibraries)
);
}
答案 0 :(得分：2)
这里有很多问题。我会尽力描述尽可能多的东西。可能还有几个......
d.resolve(allSites)需要位于completefunc回调中，因为您不想在填充allSites之前解析承诺。
getSiteLibraries()和searchLibraries()需要回复他们的承诺。
findLibraries()和parseSearchResult()没有任何异步代码，因此无需返回promises，只返回结果。
$q.all(listPromise).then(findLibraries(listPromise))实际上会立即执行findLibraries()，只需使用$q.all(listPromise).then(findLibraries)。同样适用于$q.all(itemPromise).then(parseSearchResult(itemPromise))。
同样适用于......
getAllSites()
.then(
getSiteLibraries(allSites)
)
.then(
searchLibraries(allLibraries)
);
更改为：
getAllSites()
.then(
getSiteLibraries
)
.then(
searchLibraries
);
应用上述更改......
var checkedOutReport = function () {
var rootSite = window.location.protocol + "//" + window.location.hostname;
//Create array with each collection site
function getAllSites (){
var d = $q.defer();
var allSites = [];
$().SPServices({
operation: "GetAllSubWebCollection",
completefunc: function (xData,Status){
var result = $(xData.responseXML);
result.find('Web').each(function (){
var self = $(this);
allSites.push({
siteTitle: self.attr('Title'),
siteUrl: self.attr('Url')
})
})
d.resolve(allSites); // resolve only when complete
}
});
return d.promise;
}
//Get libraries for each siteUrl
function getSiteLibraries (allSites) {
var siteCount = allSites.length;
var listPromise = [];
//Go through each site and find document libraries
for (var i = 0; i < siteCount; i++){
listPromise[i] = $().SPServices({
operation: "GetListCollection",
webURL: allSites[i].siteUrl
})
}
//Promise array contains all lists for each site
//Get libraries for each site
return $q.all(listPromise).then(findLibraries); // need to return the promise
}
function findLibraries (promises){
var siteCount = promises.length;
var allLibraries = [];
//For each site, find the document libraries
for (var i = 0; i < siteCount; i++){
$(promises[i].responseXML).find("List[ServerTemplate='101']").each(function(){
var self = $(this);
allLibraries.push({
listName: self.attr('Title'),
listId: self.attr('ID'),
siteUrl: allSites[i].siteUrl
})
})
}
console.log(allLibraries);
return allLibraries; // don't need a promise here
}
//CAML QUERIES
var cQueryOptions = "<QueryOptions><ViewAttributes Scope='RecursiveAll' IncludeRootFolder='True' /></QueryOptions>",
cQueryAllCheckedOutDocuments = '<Query><Where><IsNotNull><FieldRef Name="CheckoutUser" /></IsNotNull></Where></Query>',
cQueryModifiedBySystemAccount = '<Query><Where><Contains><FieldRef Name="Editor" /><Value Type="User">system</Value></Contains></Where></Query>',
cViewFields = "<ViewFields Properties='True' />";
//For each library in site collection, find documents which meet criteria
function searchLibraries (library) {
var libraryCount = library.length;
var itemPromise = [];
for (var i = 0; i < libraryCount; i++){
itemPromise[i] = $().SPServices({
operation: "GetListItems",
webURL: library[i].siteUrl,
listName: library[i].listID,
CAMLViewFields: cViewFields,
CAMLQuery: cQueryAllCheckedOutDocuments
})
}
return $q.all(itemPromise).then(parseSearchResult); // need to return promise
}
//Clean up result
function parseSearchResult(result){
var resultCount = result.length;
var returnedFiles = [];
for(var i = 0; i < resultCount; i++){
$(result[i].responseXML).SPFilterNode("z:row").each(function (){
var self = $(this);
var fileName = self.attr('ows_LinkFilename');
var fileUrl = self.attr('ows_FileDirRef').split("#");
var checkedTo = self.attr('ows_LinkCheckedOutTitle');
var modified = self.attr('ows_Modified');
returnedFiles.push({
fileName: fileName,
fileUrl: fileUrl[1],
checkedTo: checkedTo,
modified: modified
});
})
}
return returnedFiles; // don't need a promise here
}
getAllSites()
.then(
getSiteLibraries
)
.then(
searchLibraries
);
}