group all layers except the back layer

[wanokuni]

I know this has been asked quite alot and I have tried many code snippets from here but I just can't get it to work how I want, hope somebody can help.

 what I want to achieve it move all the Layers to a new group expect the back layer. I tried to use action for this: with action I select all layers then create a group from selected layers, this works find if I have a locked backround layer, but when I have a normal layer it will be also moved inside the group as well.

Here what I got so far but I can't figure out how to exculde the most back layer.

#target photoshop

var doc = app.activeDocument;

for (var i = 0; i < doc.layers.length; i++) {
    try {
        doc.activeLayer = doc.layers[i];
        if (doc.layers = i - 1) {
            SelectAllLayers();
            addLayeSet();
        }
    } catch (err) {}
    return;
}

function SelectAllLayers() {
    try {
        app.runMenuItem(stringIDToTypeID("selectAllLayers"));
    } catch (err) {}
    return;
}


function addLayeSet() {
    try {
        var newGroup = doc.layerSets.add();
        newGroup.name = "Adjustments";
        activeDocument.activeLayer.move(doc.layerSets["Adjustments"], ElementPlacement.INSIDE);
    } catch (err) {}
    return
}

[c.pfaffenbichler · Accepted solution]

Does this help? 

// group all but lowermost layer;
// 2021, use it at your own risk;
if (app.documents.length > 0) {
    theStuff ();
    };
////////////////////////////////////
function theStuff () {
// get number of layers;
var ref = new ActionReference();
ref.putEnumerated( charIDToTypeID("Dcmn"), charIDToTypeID("Ordn"), charIDToTypeID("Trgt") ); 
var docDesc = executeActionGet(ref);
var theNumber = docDesc.getInteger(stringIDToTypeID("numberOfLayers"));
var hasBackground = docDesc.getBoolean(stringIDToTypeID("hasBackgroundLayer"));
// select layers;
if (hasBackground == true) {var theX = 1} else {var theX = 2};
selectLayerByIndex(theNumber,false);
for (var m = theX; m <= theNumber-1; m++) {
    selectLayerByIndex(m,true)
};
// group layers;
var desc159 = new ActionDescriptor();
var ref114 = new ActionReference();
ref114.putEnumerated( charIDToTypeID( "Lyr " ), charIDToTypeID( "Ordn" ), charIDToTypeID( "Trgt" ) );
desc159.putReference( charIDToTypeID( "null" ), ref114 );
executeAction( stringIDToTypeID( "groupLayersEvent" ), desc159, DialogModes.NO );
};
////////////////////////////////////
// by mike hale, via paul riggott;
function selectLayerByIndex(index,add){ 
    add = undefined ? add = false:add 
    var ref = new ActionReference();
        ref.putIndex(charIDToTypeID("Lyr "), index);
        var desc = new ActionDescriptor();
        desc.putReference(charIDToTypeID("null"), ref );
           if(add) desc.putEnumerated( stringIDToTypeID( "selectionModifier" ), stringIDToTypeID( "selectionModifierType" ), stringIDToTypeID( "addToSelection" ) ); 
          desc.putBoolean( charIDToTypeID( "MkVs" ), false ); 
       try{
        executeAction(charIDToTypeID("slct"), desc, DialogModes.NO );
    }catch(e){
    alert(e.message); 
    }
    };

[wanokuni]

Thank you it did help, I appericate it a lot!

[Kukurykus · Accepted solution]

lrs = [].slice.call(activeDocument.layers)
sTT = stringIDToTypeID; ref = new ActionReference()
while(lrs.length > 1) ref.putIdentifier(sTT('layer'), lrs.shift().id);
(dsc = new ActionDescriptor()).putReference(sTT('null'), ref)
dsc.putBoolean(sTT('makeVisible'), false);
executeAction(sTT('select'), dsc);

(ref1 = new ActionReference()).putClass(sTT('layerSection'));
(dsc1 = new ActionDescriptor()).putReference(sTT('null'), ref1), nme = 'Adjustements';
(ref2=new ActionReference()).putEnumerated(sTT('layer'),sTT('ordinal'),sTT('targetEnum'))
dsc1.putReference(sTT('from'),ref2);(dsc2=new ActionDescriptor()).putString(sTT('name'),nme)
dsc1.putObject(sTT('using'), sTT('layerSection'), dsc2), executeAction(sTT('make'), dsc1)

[wanokuni]

That is excatly what I wanted Thanks a lot!