Get User/Group Permissions for List using javascript(ecmascript)

问题

I am trying to use the javascript object model to retrieve a list of users/groups for a list and their permissions at the list level. So far I have this which returns a member object but I cant get any information about the member. When I try to use rAssignment.get_member().get_id(), or rAssignment.get_member().get_title() I get an error.

        //Get List Permissions
        function getListPerms() {
            var clientContext = new SP.ClientContext();
            var siteColl = clientContext.get_site();
            var site = clientContext.get_web();
            listSecurableObject = site.get_lists().getByTitle($("[name='ListSlct']").val());
            listRoleAssignments = listSecurableObject.get_roleAssignments();
            clientContext.load(listRoleAssignments);
            clientContext.executeQueryAsync(Function.createDelegate(this, this.getListPerms_onQuerySucceeded),Function.createDelegate(this, this.getListPerms_onQueryFailed));
       }
       function getListPerms_onQuerySucceeded() {
            var listPerms="";
            listPerms += '<table border="1">';
            listPerms += '<tr>';
            listPerms += '<td align="center">ID</td>';
            listPerms += '</tr>';
            var listPermsEnumerator =  this.listRoleAssignments.getEnumerator();
            while (listPermsEnumerator.moveNext()) {
                var rAssignment = listPermsEnumerator.get_current();
                listPerms += '<tr>';
                listPerms += '<td align="center">' + rAssignment.get_member() +  '</td>';
                listPerms += '</tr>';
            }
            listPerms += '</table>';
            document.getElementById('listPermsTable').innerHTML = listPerms;
       }
       function getListPerms_onQueryFailed(sender, args) {
           alert('Request failed. ' + args.get_message() + '\n' + args.get_stackTrace());
       }

回答1:

Try changing your clientContext.load() function call as follows:

clientContext.load(listSecurableObject, 'Include(RoleAssignments, RoleAssignments.Include(Member))');

Now in the getListPerms_onSucceeded() method you ought to be able to enumerate through listSecurableObject.get_roleAssignments() and get the members similar to how you're already doing it (although you'll probably want to use rAssignment.get_member().get_loginName() ).

来源：https://stackoverflow.com/questions/15935101/get-user-group-permissions-for-list-using-javascriptecmascript