How do I bind to list of checkbox values with AngularJS?

Question

I have a few checkboxes:

Answer 1

Using this example of the @Umur Kontacı, I think in using to catch selected data throughout another object/array, like a edit page.

Catch options at the database

Toggle a some option

As example, all colors json in below:

{
    "colors": [
        {
            "id": 1,
            "title": "Preto - #000000"
        },
        {
            "id": 2,
            "title": "Azul - #005AB1"
        },
        {
            "id": 3,
            "title": "Azul Marinho - #001A66"
        },
        {
            "id": 4,
            "title": "Amarelo - #FFF100"
        },
        {
            "id": 5,
            "title": "Vermelho - #E92717"
        },
        {
            "id": 6,
            "title": "Verde - #008D2F"
        },
        {
            "id": 7,
            "title": "Cinza - #8A8A8A"
        },
        {
            "id": 8,
            "title": "Prata - #C8C9CF"
        },
        {
            "id": 9,
            "title": "Rosa - #EF586B"
        },
        {
            "id": 10,
            "title": "Nude - #E4CAA6"
        },
        {
            "id": 11,
            "title": "Laranja - #F68700"
        },
        {
            "id": 12,
            "title": "Branco - #FFFFFF"
        },
        {
            "id": 13,
            "title": "Marrom - #764715"
        },
        {
            "id": 14,
            "title": "Dourado - #D9A300"
        },
        {
            "id": 15,
            "title": "Bordo - #57001B"
        },
        {
            "id": 16,
            "title": "Roxo - #3A0858"
        },
        {
            "id": 18,
            "title": "Estampado "
        },
        {
            "id": 17,
            "title": "Bege - #E5CC9D"
        }
    ]
}

And 2 types of data object, array with one object and object containing two/more object data:

• Two items selected catched at the database:

  [{"id":12,"title":"Branco - #FFFFFF"},{"id":16,"title":"Roxo - #3A0858"}]
  

• One item selected catched at the database:

  {"id":12,"title":"Branco - #FFFFFF"}
  

And here, my javascript code:

/**
 * Add this code after catch data of database.
 */

vm.checkedColors = [];
var _colorObj = vm.formData.color_ids;
var _color_ids = [];

if (angular.isObject(_colorObj)) {
    // vm.checkedColors.push(_colorObj);
    _color_ids.push(_colorObj);
} else if (angular.isArray(_colorObj)) {
    angular.forEach(_colorObj, function (value, key) {
        // vm.checkedColors.push(key + ':' + value);
        _color_ids.push(key + ':' + value);
    });
}

angular.forEach(vm.productColors, function (object) {
    angular.forEach(_color_ids, function (color) {
        if (color.id === object.id) {
            vm.checkedColors.push(object);
        }
    });
});

/**
 * Add this code in your js function initialized in this HTML page
 */
vm.toggleColor = function (color) {
    console.log('toggleColor is: ', color);

    if (vm.checkedColors.indexOf(color) === -1) {
        vm.checkedColors.push(color);
    } else {
        vm.checkedColors.splice(vm.checkedColors.indexOf(color), 1);
    }
    vm.formData.color_ids = vm.checkedColors;
};

My Html code:

    
        
        <% color.title %>
    


checkedColors Output:
<% checkedColors %>

[Edit] Refactored code below:

function makeCheckedOptions(objectOptions, optionObj) {
    var checkedOptions = [];
    var savedOptions = [];

    if (angular.isObject(optionObj)) {
        savedOptions.push(optionObj);
    } else if (angular.isArray(optionObj)) {
        angular.forEach(optionObj, function (value, key) {
            savedOptions.push(key + ':' + value);
        });
    }

    angular.forEach(objectOptions, function (object) {
        angular.forEach(savedOptions, function (color) {
            if (color.id === object.id) {
                checkedOptions.push(object);
            }
        });
    });

    return checkedOptions;
}

And call new method as below:

vm.checkedColors = makeCheckedOptions(productColors, vm.formData.color_ids);

That's it!