首先，您的getFormDigest功能不太正確：
function getFormDigest(baseurl) {
// you pass in a "baseurl" value above, but you're not really doing anything with it.
// the URL you use below is hardcoded to always
// make the request to the /sites/Projects/USMC/AMMO site
return $.ajax({
url: "https://baseurl.sharepoint.com/sites/Projects/USMC/AMMO/_api/contextInfo",
method: 'POST',
headers: {
'Accept': 'application/json; odata=verbose'
}
});
}
您需要做的是更改它，以便您可以將站點 URL 傳遞給它并從您嘗試將新項目發布到的實際站點獲取有效的表單摘要：
function getFormDigest(siteUrl) {
return $.ajax({
url: siteUrl + "/_api/contextInfo",
method: 'POST',
headers: {
'Accept': 'application/json; odata=verbose'
}
});
}
接下來，您需要更改您的PostItem函數以對所選程序的當前值做出反應，并根據該值選擇一些正確的值。我在評論中看到您發布了一個小片段，您正在創建一個地圖，該地圖將根據所選程序的密鑰吐出正確的 URL。如果您只需要一個值，那是可行的，但是，由于您說過每個子站點上的列表名稱都不同，因此您實際上需要根據所選程序動態生成三個不同的值：
站點本身的 URL，以便您可以獲得有效的表單摘要，
列表名稱，以便您可以為新項目的 JSON__metadata屬性獲取正確的列表項目實體類型值。您有執行此操作的功能，但您沒有使用它。此外，您還需要列表名稱：
一個包含站點和列表名稱的URL ，以便您可以發布新的列表項（因為這樣做的 URL 本質上是[URL to site]/_api/web/lists/getbytitle('[list name]')/items）
您可以執行一系列if..then..else if..then..else if..then..else語句，但是對于超過兩個或三個可能的值，這會變得很麻煩。一種更簡潔的方法是使用語句switch。因此，PostItem如果您使用 aswitch來評估所選程序值是什么，然后基于該值動態設置站點 URL 和列表名稱，那么您的函數可能如下所示：
function PostItem() {
// the base URL should be what is the same across all subsites. in comments
// you said the subsites start to differ after /sites/Projects.
var baseUrl = "https://your-tenant.sharepoint.com/sites/Projects";
// get the selected program from your form
var programName = $("#dProgram").val();
var siteUrl = null; // set this as empty for now
var listName = null; // set this as empty for now
// a "switch" statement is like a fancy "if" statement that is
// useful if you have more than just two or three options
switch (programName) {
case "AMMO":
// set the site url to be whatever it is after /sites/Projects.
// in the case of AMMO, you have already posted that the "AMMO"
// subsite is under a "USMC" subsite that is under "Projects"
siteUrl = baseUrl + "/USMC/AMMO";
listName = "AMMODeliverables";
break;
case "AHR":
// set the site url to be whatever it is after /sites/Projects.
// IF in this case the "AHR" subsite is directly under /Projects
// and NOT under another subsite (as is the case with /USMC/AMMO),
// you just add that directly:
siteUrl = baseUrl + "/AHR";
// HOWEVER, if it is under another subsite with a different name, similar
// to how "AMMO" is actually under another subsite called "USMC", then you
// would include that "Other" subsite here:
siteUrl = baseurl + "/Other/AHR";
// set the list name, since you said the list names
// are different in each of the subsites
listName = "AHR Deliverables";
break;
case "FOO":
// pretending that "FOO" is _directly_ under /sites/Projects
siteUrl = baseurl + "/FOO";
listName = "FOO Thingys";
break;
case "BAR":
// pretending that "BAR" is NOT directly under /sites/Projects,
// but is in fact under another "Different" subsite
siteUrl = baseurl + "/Different/BAR";
listName = "BAR Whatchamacallits";
default:
// all switch statements need a default option in case
// what we are checking does not match any any of the options
// we are expecting. in this instance, we will _not_ set
// a site URL or list name so that we do not try to post
// to s non-existent site or list
break;
}
// if we didn't get one of our expected choices for programName, then siteUrl
// will not have been populated in the switch, so we can check and make sure we
// actually have a valid siteUrl before we start sending AJAX requests out
if (siteUrl) {
// pass the siteUrl into your improved getFormDigest function so
// that you get the correct form digest from the site you are
// actually trying to post a new item to.
// also, you don't actuall need the "return" here.
getFormDigest(siteUrl).then(function(digestData) {
console.log(digestData.d.GetContextWebInformation.FormDigestValue);
// use your getItemTypeForListName function to get the
// correct SharePoint List Item Entity Type name based on
// the list name
var listItemEntityType = getItemTypeForListName(listName);
// construct the URL to post the new list item to based on the siteUrl
// and the listName, which vary based on the selected projecName
var postNewItemUrl = siteUrl + "/_api/web/lists/getbytitle('" + listName + "')/items";
// construct your new item JSON. you said all the fields
// in all the lists are the same, so the only thing that really
// needs to dynamically chage here is the entity type name,
// which was generated based on the list name
var item = {
"__metadata": { "type": listItemEntityType },
"Title": "updated title",
"Program": programName,
"Deliverable": $("#dDeliverable").val(),
"To": $("#dTo").val(),
"Date": $("#dDate").val(),
"Approved": $("#dApproved").val(),
"Notes": $("#dNotes").val()
};
$.ajax({
// use your dynamically generated URL here
url: postNewItemUrl,
method: "POST", //Specifies the operation to create the list item
data: JSON.stringify(item),
headers: {
"content-type": "application/json;odata=verbose",
"X-RequestDigest": digestData.d.GetContextWebInformation.FormDigestValue,
"Accept": "application/json;odata=verbose",
"If-Match": "*"
},
success: function(data) {
alert('Success'); // Used sweet alert for success message
console.log(data + " success in updating item");
},
error: function(data) {
alert(JSON.stringify(item));
console.log(data);
}
});
});
}
}
