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Angular HTML Select option disable and enable

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感动是毒
感动是毒 2021-02-18 18:33

I have a html select option
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  • 渐次进展
    2021-02-18 19:11

    While the ng-disabled attribute will technically work, you are likely to encounter bugs when using ng-repeat on options. This is a well known issue and is exactly the reason that the angular team created ng-options. There is not yet an angular implementation for using ng-options and ng-disabled together, but Alec LaLonde created this custom directive that you can add in and use. See the issue forum here: https://github.com/angular/angular.js/issues/638 and the jsfiddle from that post.

    angular.module('myApp', [])
.directive('optionsDisabled', [ '$parse', function($parse) {
        var disableOptions = function($scope, attr, $element, data, fnDisableIfTrue) {
            $element.find('option:not([value="?"])').each(function(i, e) { //1
                var locals = {};
                locals[attr] = data[i];
                $(this).attr('disabled', fnDisableIfTrue($scope, locals));
            });
        };

        return {
            priority: 0,
            require: 'ngModel',
            link: function($scope, $element, attributes) { //2
                var expElements = attributes.optionsDisabled.match(/^\s*(.+)\s+for\s+(.+)\s+in\s+(.+)?\s*/),
                    attrToWatch = expElements[3],
                    fnDisableIfTrue = $parse(expElements[1]);
                $scope.$watch(attrToWatch, function(newValue, oldValue) {
                    if (!newValue) return;

                    disableOptions($scope, expElements[2], $element, newValue, fnDisableIfTrue);
                }, true);

                $scope.$watch(attributes.ngModel, function(newValue, oldValue) { //3
                    var disabledOptions = $parse(attrToWatch)($scope);
                    if (!newValue) return;

                    disableOptions($scope, expElements[2], $element, disabledOptions, fnDisableIfTrue);
                });
            }
        };
    }
]);
//1 refresh the disabled options in the select element
//2 parse expression and build array of disabled options
//3 handle model updates properly

function OptionsController($scope) {
    $scope.ports = [{name: 'http', isinuse: true},
                    {name: 'test', isinuse: false}];

    $scope.selectedport = 'test';
}
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  • 有刺的猬
    2021-02-18 19:16

    Assuming you have a structure like this: 

      $scope.filter = {
    fields: [
      {id: 1, name: "a", selectable: false},
      {id: 2, name: "asdf", selectable: true},
      {id: 3, name: "qwet", selectable: false},
      {id: 4, name: "qnjew", selectable: true},
      {id: 5, name: "asdjf", selectable: false}
    ]
  };

    This should work for you: 

      <select>
    <option ng-repeat="field in filter.fields" ng-disabled="field.selectable" value="{{field.id}}">{{field.name}}</option>
  </select>
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