Retrieve current site name (not url) programmatically?

Question

I want to create a code that only generates a link for certain users in a group, but this group name changes across the many subsites that my users have. The group name = [Site Title] + ' Creators' (e.g., "P2X Creators").

I was initially checking for "Creators" in their group collection using SPServices: http://sympmarc.com/2010/01/29/determining-if-a-user-is-in-a-permission-group-with-sharepoints-web-services/ but I realize that if you are in another group with "Creators" in the name on some other subsite within my portal, then the link will show up because this SPService method uses a webservice that checks the groups for the entire site collection.

So what I would like to do is to use something like Web.get_title() (which shows up as an option in the js console but says the property is missing) and just set that value + " Creators" so that I can search for that specific group. Another option would be for me to simply retrieve the names of the groups within the specific subsites so I can grab the name of that group which contains "Creators".

Please let me know if this is worded confusingly or if I can improve on any more specific details.

Answer 1

With every page is associated client context (_spPageContextInfo object), which in turn contains webTitle property. This property stores current web title and the following example demonstrates how to generate fully qualified name of group:

function resolveGroupName(groupName)
{
    return _spPageContextInfo.webTitle + ' ' + groupName;
}

Usage

$().SPServices({
     operation: "GetGroupCollectionFromUser",
     userLoginName: $().SPServices.SPGetCurrentUser(),
     async: false,
     completefunc: function(xData, Status) {
        if($(xData.responseXML).find("Group[Name='" + resolveGroupName('Creators') + "']").length == 1)
        {
           //...
        }
      }
});

Option 2. Using CSOM (JavaScript)

An alternative solution would be to utilize CSOM API. SP.User.groups property gets the collection of groups of which the user is a member.

Example:

var context = new SP.ClientContext.get_current();
var web = context.get_web();
var user = web.get_currentUser();
var groups = user.get_groups();

context.load(web,'Title');
context.load(groups);
context.executeQueryAsync(
     function() {

       var groupFQN = web.get_title() + ' Approvers';   //generate group name 
       if(groupExists(groups,groupFQN)){
          //...
       }

     },
     function(sender,args){
        console.log(args.get_message());
     }
  );

function groupExists(groups,name){
   var found = false;
   for (var i = 0; i < groups.get_count() ; i++) {
       var group = groups.getItemAtIndex(i);
       if(group.get_title() == name) {
            found = true;
            break;
       }
   }
   return found;
}