SharePoint hosted app part and SPHostUrl + SPAppWebUrl

Hi,
I have sharepoint hosted app that gets hostweburl and appweburl with the next lines
function getUrl() {
hostweburl = getQueryStringParameter("SPHostUrl");
appweburl = getQueryStringParameter("SPAppWebUrl");
hostweburl = decodeURIComponent(hostweburl);
appweburl = decodeURIComponent(appweburl);
var scriptbase = hostweburl + "/_layouts/15/";
$.getScript(scriptbase + "SP.Runtime.js",
function () {
$.getScript(scriptbase + "SP.js",
function () { $.getScript(scriptbase + "SP.RequestExecutor.js", execOperation); }
function execOperation() {
context = new SP.ClientContext(appweburl);
appContextSite = new SP.AppContextSite(context, hostweburl);
And this works fine. But when I'm creating app part those hostweburl and appweburl fields are undefined. So I cant get the context and everything is broken. Is this done in some other way in app parts?

Like this in the ClientWebPart
<Content
      Type="html"
      Src="~appWebUrl/Pages/Welcome.aspx?{StandardTokens}&ShowImage=_ShowImage_" />
The {StandardTokens} contains all the queryString parameters you need.
Author,
Microsoft SharePoint 2013 App Development
Author,
Professional Business Connectivity Services
Author,
Inside SharePoint 2013
Blog, www.shillier.com
Twitter, @ScotHillier
SharePoint Trainer, Critical Path Training

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Hello All,
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Thanks for the reply Geetanjali.
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dfd

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Okay. Finally i found solution after 2 weeks :)
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Navaneeth

How to get hostweb's site collection in SharePoint hosted app?

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Hi,
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Whenever you see a reply and if you think is helpful,Vote As Helpful! And whenever you see a reply being an answer to the question of the thread, click Mark As Answer

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Please remember to mark the replies as answers if they help and unmark them if they provide no help. If you have feedback for TechNet Subscriber Support, contact
[email protected]
Dennis Guo
TechNet Community Support

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If my contribution helps you, please click Mark As Answer on that post and
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Hi,
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Unable to update rating (rating column) on host document using JavaScript Object Model API inside sharepoint hosted apps

Hi Everyone,
We are developing SharePoint hosted apps for Office 365, for that we are going
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"List does not exist.
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Please help on this
Please see below code..
'use strict';
var web, list, listItems, hostUrl, videoId, output = "";
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$.getScript(scriptbase + "SP.Runtime.js", function () {
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list = web.get_lists().getByTitle(videoLibrary);
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context.load(listItems);
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Thanks & Regards
Sanjay
Thank you in advance! :-)


Hi,
According to your post, my understanding is that you want to update list column in SharePoint hosted apps using JavaScript Client Object Model.
Based on the error message, it seems not retrieve the list object in context. I suggest you debug the code step by step using Internet Explorer Developer Tools to
find the problem.
Here are some demos about using JavaScript Client Object Model in SharePoint hosted app:
http://blogs.msdn.com/b/officeapps/archive/2012/09/04/using-the-javascript-object-model-jsom-in-apps-for-sharepoint.aspx
http://sharepoint.stackexchange.com/questions/55334/how-to-access-list-in-sharepoint-hosted-app
http://www.dotnetcurry.com/showarticle.aspx?ID=1028
Best regards
Zhengyu Guo
TechNet Community Support

Upgrade SharePoint Content Types / Site Columns declaratively in SharePoint hosted apps

Hi!
I have a question where I was unable to find any official guidance for. I have created a SharePoint hosted APP where I have multiple site columns and content types (declared in XML). The APP installs and functions just fine.
Now I have a requirement to change a site column (Choice field, just add some more choice values). I was able to update the site column but the changes will not be reflected on the list column (I think because there no way to push the changes).
So is there an "official" way of changing site columns?
Any help is appreciated!
Thx!

msdn -
How to: Update app web components in SharePoint 2013 :
We do not support changing the data type of a list or content type field (column) after its initial deployment in any
circumstance. In particular, do not change the data type of a field as part of an app update (not
even programmatically). As an alternative, you can add a new field. If the app includes custom item create, edit,
or view forms; be sure to make corresponding changes in these forms. For example, add UI for the new field and remove UI for the old one. (In a provider-hosted app, you can programmatically move data from the old field to the new one and then delete the old.
How to: Update apps for SharePoint
[custom.development]

CAML query in Workflow inside sharepoint hosted app

Hi,
I am building a sharepoint hosted app for sharepoint online.The app includes a list workflow.One of the activity in the workflow is to query another list within the app web, to get count of items where a condition is met.Can anyone please guide me how this
can be achieved?
Thanks!

Hello Steve,
Thanks for the Reply
Following code helped me in creating the Subsite successfully in host web
Var hostWebUrl;
Var appWebUrl;
Var context;
Var newSubsite;
function () {
try
hostWebUrl = GetQueryString("SPHostUrl");
appWebUrl = GetQueryString ("SPAppWebUrl");
var layoutsRoot = hostWebUrl +
'/_layouts/15/';
$.getScript(layoutsRoot + "SP.Runtime.js",
function () {
$.getScript(layoutsRoot + "SP.js", CreateSubsite);});
catch(ex)
alert("message" + ex.message);
function GetQueryString (name) {
name = name.replace(/[\[]/,
"\\\[").replace(/[\]]/,
var regex =
new RegExp("[\\?&]"
+ name + "=([^&#]*)"),
results = regex.exec(location.search);
return results ==
null ?
"" : decodeURIComponent(results[1].replace(/\+/g,
// Function to create subsite
function CreateSubsite () {
context = new SP.ClientContext(appWebUrl);
var hostContext =
new SP.AppContextSite(context, hostWebUrl);
var webCreateInfo =
new SP.WebCreationInformation();
//set values
webCreateInfo.set_description("New Subsite Created");
webCreateInfo.set_language(1033);
webCreateInfo.set_title("NewSubSite");
webCreateInfo.set_url("SubsiteURL");
webCreateInfo.set_useSamePermissionsAsParentSite(true);
webCreateInfo.set_webTemplate("STS#0");
this.web = hostContext.get_web();
newSubsite = this.web.get_webs().add(webCreateInfo);
context.load(newSubsite);
context.executeQueryAsync(
Function.createDelegate(this,successHandler),Function.createDelegate(this,errorHandler));
function successHandler() {
alert("subsite created successfully");
function errorHandler(sender, args) {
alert("Could not complete cross-domain call: " + args.get_message());
Vishnu

SharePoint hosted app part and SPHostUrl + SPAppWebUrl

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