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Model List Difference (gallery-model-list-difference) on cdn

Last Updated: 06/23/12

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Steven Olmsted

YUI Contributor

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Created: 02/13/12
Last CDN Push: 05/2/13
Build Tag: gallery-2013.05.02-22-59
Project: YUI 3
License: YUI BSD
YUI Version: 3.5.1
Free for use.

Creates a model list that is the difference of two or more other model lists. The new model list stays up to date as the source lists change.

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The static method Y.ModelList.difference returns a model list that is the difference of two or more other model lists.

The first argument determines the type of model list that is created; it may be a constructor function or a string namespace to a constructor function stored on Y. If the first argument is an instance of ModelList, its constructor is used.

Then any number of arguments can follow. The remaining arguments should be ModelList instances or arrays of ModelList instances. The order of these model lists is important.

Code Sample

<script src="http://yui.yahooapis.com/3.5.1/build/yui/yui-min.js"></script>

YUI({
    //Last Gallery Build of this module
    gallery: 'gallery-2013.05.02-22-59'
}).use('gallery-model-list-difference', function(Y) {
    Y.NameModel = Y.Base.create('NameModel', Y.Model, [], {
    }, {
        ATTRS: {
            name: {
                value: ''
            }
        }
    });
 
    Y.NameModelList = Y.Base.create('NameModelList', Y.ModelList, [], {
        comparator: function (model) {
            return model.get('name');
        },
        model: Y.NameModel
    });
 
    var nameModel_Emily = new Y.NameModel({
            name: 'Emily'
        }),
        nameModel_Eric = new Y.NameModel({
            name: 'Eric'
        }),
        nameModel_George = new Y.NameModel({
            name: 'George'
        }),
        nameModel_Jeffrey = new Y.NameModel({
            name: 'Jeffrey'
        }),
        nameModel_Jennifer = new Y.NameModel({
            name: 'Jennifer'
        }),
        nameModel_Jim = new Y.NameModel({
            name: 'Jim'
        }),
        nameModel_Kara = new Y.NameModel({
            name: 'Kara'
        }),
        nameModel_Luke = new Y.NameModel({
            name: 'Luke'
        }),
        nameModel_Matthew = new Y.NameModel({
            name: 'Matthew'
        }),
        nameModel_Raymond = new Y.NameModel({
            name: 'Raymond'
        }),
        nameModel_Sarah = new Y.NameModel({
            name: 'Sarah'
        }),
        nameModelList0 = new Y.NameModelList().reset([
            nameModel_Jeffrey,
            nameModel_Emily,
            nameModel_Luke,
            nameModel_Kara,
            nameModel_Eric,
            nameModel_George,
            nameModel_Jim,
            nameModel_Raymond
        ]),
        nameModelList1 = new Y.NameModelList().reset([
            nameModel_Jeffrey,
            nameModel_Emily,
            nameModel_Eric,
            nameModel_Jennifer
        ]),
        nameModelList2 = new Y.NameModelList().reset([
            nameModel_Jeffrey,
            nameModel_George,
            nameModel_Jim
        ]),
        nameModelListDifference = Y.ModelList.difference('NameModelList', nameModelList0, nameModelList1, nameModelList2);
 
    alert(nameModelListDifference.get('name').join(', '));
    // Kara, Luke, Raymond
 
    nameModelList0.add(nameModel_Sarah);
 
    nameModelList0.add(nameModel_Matthew);
 
    nameModelList1.add(nameModel_Matthew);
 
    alert(nameModelListDifference.get('name').join(', '));
    // Kara, Luke, Raymond, Sarah
 
    nameModelList1.reset();
 
    alert(nameModelListDifference.get('name').join(', '));
    // Emily, Eric, Kara, Luke, Matthew, Raymond, Sarah
});

YUI({
    //Last Gallery Build of this module
    gallery: 'gallery-2013.05.02-22-59'
}).use('gallery-model-list-difference', function(Y) {
    Y.NameModel = Y.Base.create('NameModel', Y.Model, [], {
    }, {
        ATTRS: {
            name: {
                value: ''
            }
        }
    });
 
    Y.NameModelList = Y.Base.create('NameModelList', Y.ModelList, [], {
        comparator: function (model) {
            return model.get('name');
        },
        model: Y.NameModel
    });
 
    var nameModel_Emily = new Y.NameModel({
            name: 'Emily'
        }),
        nameModel_Eric = new Y.NameModel({
            name: 'Eric'
        }),
        nameModel_George = new Y.NameModel({
            name: 'George'
        }),
        nameModel_Jeffrey = new Y.NameModel({
            name: 'Jeffrey'
        }),
        nameModel_Jennifer = new Y.NameModel({
            name: 'Jennifer'
        }),
        nameModel_Jim = new Y.NameModel({
            name: 'Jim'
        }),
        nameModel_Kara = new Y.NameModel({
            name: 'Kara'
        }),
        nameModel_Luke = new Y.NameModel({
            name: 'Luke'
        }),
        nameModel_Matthew = new Y.NameModel({
            name: 'Matthew'
        }),
        nameModel_Raymond = new Y.NameModel({
            name: 'Raymond'
        }),
        nameModel_Sarah = new Y.NameModel({
            name: 'Sarah'
        }),
        nameModelList0 = new Y.NameModelList().reset([
            nameModel_Jeffrey,
            nameModel_Emily,
            nameModel_Luke,
            nameModel_Kara,
            nameModel_Eric,
            nameModel_George,
            nameModel_Jim,
            nameModel_Raymond
        ]),
        nameModelList1 = new Y.NameModelList().reset([
            nameModel_Jeffrey,
            nameModel_Emily,
            nameModel_Eric,
            nameModel_Jennifer
        ]),
        nameModelList2 = new Y.NameModelList().reset([
            nameModel_Jeffrey,
            nameModel_George,
            nameModel_Jim
        ]),
        nameModelListDifference = Y.ModelList.difference('NameModelList', nameModelList0, nameModelList1, nameModelList2);
     
    alert(nameModelListDifference.get('name').join(', '));
    // Kara, Luke, Raymond
 
    nameModelList0.add(nameModel_Sarah);
 
    nameModelList0.add(nameModel_Matthew);
     
    nameModelList1.add(nameModel_Matthew);
 
    alert(nameModelListDifference.get('name').join(', '));
    // Kara, Luke, Raymond, Sarah
 
    nameModelList1.reset();
 
    alert(nameModelListDifference.get('name').join(', '));
    // Emily, Eric, Kara, Luke, Matthew, Raymond, Sarah
});