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POModifying User-Attribute on SharePoint data item using HTTP
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copied!<p>I'm using the (JSON) HTTP interface to communicate with SharePoint. The communication itself is done via cURL and a convinience-wrapper in PHP. Problems arise, when I want to push data to SP.</p> <p>Since I'm no Microsoft / SharePoint guy, I'm missing the proper vocabulary to explain my needs. I'll therefore demonstrate using data I received from SharePoint.</p> <p>GET <a href="http://example.org/mytest/_vti_bin/listdata.svc/Aufgaben(2" rel="nofollow">http://example.org/mytest/_vti_bin/listdata.svc/Aufgaben(2</a>) returns the following (truncated by me) data:</p> <pre><code>{ "d" : { "__metadata": { "uri": "http://example.org/mytest/_vti_bin/listdata.svc/Aufgaben(2)", "etag": "W/\"5\"", "type": "Microsoft.SharePoint.DataService.AufgabenItem" }, "ID": 2, "InhaltstypID": "0x010800821BC29B80192B4C960A688416597526", "Inhaltstyp": "Aufgabe", "Titel": "Neuer Titel", "ZugewiesenAn": { "__deferred": { "uri": "http://example.org/mytest/_vti_bin/listdata.svc/Aufgaben(2)/ZugewiesenAn" } }, "ZugewiesenAnId": 29, "F\u00e4lligkeitsdatum": "\/Date(1323993600000)\/" } } </code></pre> <p>"ZugewiesenAn" is a user. If I query the deferred values, I get (truncated by me, again)</p> <pre><code>{ "d" : { "__metadata": { "uri": "http://example.org/mytest/_vti_bin/listdata.svc/Benutzerinformationsliste(29)", "etag": "W/\"1\"", "type": "Microsoft.SharePoint.DataService.BenutzerinformationslisteItem" }, "InhaltstypID": "0x010A000719C31710976A48867763D86F6586E0", "Name": "Rehm Rodney", "Konto": "EXT\\rodney.rehm", "ID": 29, "Inhaltstyp": "Person", } } </code></pre> <p>So I can see that the value of "ZugewiesenAn" should be "EXT\rodney.rehm" (as I need the username). Thus far, no problem.</p> <p><strong>The question is how I create a new or update an existing object with a different user for "ZugewiesenAn" (a User/Group field)?</strong></p> <p>I've tried:</p> <ul> <li>Sending the username as the value of "ZugewiesenAn" or "ZugewiesenAnId" results in a Bad Request.</li> <li>Querying <a href="http://example.org/_vti_bin/People.asmx" rel="nofollow">http://example.org/_vti_bin/People.asmx</a> (SOAP: SearchPrincipals) only yields numeric IDs for people that have actually worked with the list. If I query a username that hasn't logged into that SharePoint list before, I get ID -1.</li> </ul>

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