Show all user's schedule in calendar view by default without having to select people/group in selector (sharepoint 2013)

The Problem

One feature of SharePoint is to create a calendar and make it a group calendar. This allows the user to see the schedule of list of people at the same time on the same view as per the image below.

To configure the Calendar as a group Calendar you need to edit the List settings and then click on “List name, description and navigation” and finally select the radio button as per the image below.

So all this is SharePoint out of the box functionality. So where is the problem?

The problem is that to get the view of all calendar of your work group every time you open the calendar view you need to add each one of them individually! 

And there is no any way to persist this information so that it would open the calendar view automatically with the people added as per the list you see in the first image. 

The Solution

Here is a javascript workaround, which takes current site, get Calendar List ID, enumerates through List Roles and select groups contains "Member" word. You can find this place a replace the group name

1. Place script editor web part on page with calendar view

2. Copy and insert code snippet 

<script src="https://ajax.googleapis.com/ajax/libs/jquery/1.10.2/jquery.min.js"></script>

<script type="text/javascript" unselectable="on">

    //Change to name of your SharePoint group with the team members in it

var groupName = "";

//Change to the id of your SharePoint group with the team members in it

var groupID = "";

    $(document).ready(function () {

        SP.SOD.executeFunc('sp.js', 'SP.ClientContext', execOperation);

    });

    function execOperation() {

        var currentContext = new SP.ClientContext.get_current();

        this.oWeb = currentContext.get_web();

        currentUser = this.oWeb.get_currentUser();

        var allGroups = currentUser.get_groups(); 

        var oList = currentContext.get_web().get_lists().getById(_spPageContextInfo.pageListId)

        currentContext.load(oList);

        console.log(oList);

        var listRoleAssignments = oList.get_roleAssignments()

        currentContext.load(listRoleAssignments,'Include(Member,RoleDefinitionBindings)');

        currentContext.load(allGroups);

currentContext.executeQueryAsync(OnSuccess,OnFailure);

function OnSuccess(sender, args) {

    //enumerate results

    var listPermsEnumerator =  listRoleAssignments.getEnumerator();

    while (listPermsEnumerator.moveNext()) {

        var rAssignment = listPermsEnumerator.get_current();

        var member = rAssignment.get_member();

        var grName = member.get_title();

        if (grName.indexOf("Members") >= 0) {

            groupName = grName;

            groupID = member.get_id();

        

            break;

        }

    } 

}

function OnFailure(sender, args) {

}   

}

function _firstTime() {

    //need to select the calendar tab so we can override the onlick method on some of the buttons.

    SelectRibbonTab('Ribbon.Calendar.Calendar', true);

    //give the ribbon time to load

    setTimeout('_doWireUp();',1000);

}

function _doWireUp()

{

    //change the onclick event for the group buttons to make sure it reloads our default group

    var weekElem = document.getElementById('Ribbon.Calendar.Calendar.Scope.WeekGroup-Large');

    if(weekElem)

        weekElem.onclick = function() {setTimeout('_setDefaultResources();',1000);return false;};

    var dayElem = document.getElementById('Ribbon.Calendar.Calendar.Scope.DayGroup-Large');

    if(dayElem)

        dayElem.onclick = function() {setTimeout('_setDefaultResources();',1000);return false;};

    _setDefaultResources();

}

function _setDefaultResources() {

    //this is where the magic happens

    var el = jQuery('.ms-acal-rootdiv');

    var tmpstr = "\u003cEntities Append=\u0022True\u0022 Error=\u0022\u0022 DoEncodeErrorMessage=\u0022True\u0022 Separator=\u0022;\u0022 MaxHeight=\u00223\u0022\u003e\u003cEntity Key=\u0022MyGroup\u0022 DisplayText=\u0022MyGroup\u0022 IsResolved=\u0022True\u0022 Description=\u0022MyGroup\u0022\u003e\u003cExtraData\u003e\u003cArrayOfDictionaryEntry xmlns:xsi=\u0022http:\u002f\u002fwww.w3.org\u002f2001\u002fXMLSchema-instance\u0022 xmlns:xsd=\u0022http:\u002f\u002fwww.w3.org\u002f2001\u002fXMLSchema\u0022\u003e\u003cDictionaryEntry\u003e\u003cKey xsi:type=\u0022xsd:string\u0022\u003eSPGroupID\u003c\u002fKey\u003e\u003cValue xsi:type=\u0022xsd:string\u0022\u003eMyGroupID\u003c\u002fValue\u003e\u003c\u002fDictionaryEntry\u003e\u003cDictionaryEntry\u003e\u003cKey xsi:type=\u0022xsd:string\u0022\u003eAccountName\u003c\u002fKey\u003e\u003cValue xsi:type=\u0022xsd:string\u0022\u003eMyGroup\u003c\u002fValue\u003e\u003c\u002fDictionaryEntry\u003e\u003cDictionaryEntry\u003e\u003cKey xsi:type=\u0022xsd:string\u0022\u003ePrincipalType\u003c\u002fKey\u003e\u003cValue xsi:type=\u0022xsd:string\u0022\u003eSharePointGroup\u003c\u002fValue\u003e\u003c\u002fDictionaryEntry\u003e\u003c\u002fArrayOfDictionaryEntry\u003e\u003c\u002fExtraData\u003e\u003cMultipleMatches \u002f\u003e\u003c\u002fEntity\u003e\u003c\u002fEntities\u003e";

    var tmpstr2 = tmpstr.replace('MyGroupID',groupID);

    var xml = tmpstr2.replace(/MyGroup/g,groupName);

    var sel = SP.UI.ApplicationPages.CalendarSelector.instance().getSelector(1, $(el).attr('ctxid'));

    sel.selectEntities(xml, true);

}

ExecuteOrDelayUntilScriptLoaded(_firstTime, "sp.ribbon.js");

</script>

so enjoy. :)

Please comment if you have any question.

Have a good day :)