CODEWITHSUNDEEP
javascriptangularjsangularjs-directive
panesofglass
panesofglass

Reputation: 267

Simple, AngularJS replacement directive

I created an Angular directive to provide a means of attaching an ng-if directive and erase the element, replacing it with its content. I think this should be much easier, possibly using transclusion, but I can't quite work it out. How should I do this?

angular.module('myApp', []).
directive('tyReplace', function () {
    return {
        restrict: 'A',
        replace: true,
        scope: { tyReplace: '@' },
        link: function (scope, element) {
            element.parent().text(scope.tyReplace);
        }
    }
});

Usage:

<td>
    <div ty-replace="{{content}}" ng-if="condition"></div>
    <ul ng-if="othercondition">
        <li ng-repeat="item in items">{{item}}</li>
    </ul>
</td>

I started adding additional display options within the <td>, but we also allow certain cells to be edited by toggling the contenteditable attribute. This approach allows me to continue providing that option.

EDIT

Very soon, I would like to be able to replace {{content}} with something more complex, such as an <input type="text" /><input type="datetime" /> for text and date controls when editing. The current solution won't work when I want more complex markup inside.

Upvotes: 2

Views: 212

Answers (3)

Marc Kline
Marc Kline

Reputation: 9409

UPDATED

Using transclusion in your directive provides you with options for manipulating the DOM with access to the transcluded content in the compile/link function. There, you may use jqLite to overwrite the contents of the parent with the contents of the clone:

JavaScript:

angular.module('myApp', [])
.controller('MyController', function($scope){
  $scope.condition = true;
  // $scope.othercondition = true;
  $scope.items = [1, 2, 3, 4];
  $scope.obj = {
    name: ''
  };
})
.directive('myDirective', function(){
  return {
    transclude: true,
    replace: true,
    template: '<div ng-transclude></div>',
    compile: function(tElem, tAttrs, transclude) {
      return {
        pre: function(scope, element) {
          transclude(scope, function(clone){
            element.parent().empty().append(clone);
          });
        }
      }
    }
  }
});

index.html:

<td>
  <div ng-if="condition" my-directive ><input type="text" ng-model="obj.name" /></div>
  <ul ng-if="othercondition">
    <li ng-repeat="item in items">{{item}}</li>
  </ul>
</td>

Plunker Demo

Upvotes: 1

panesofglass
panesofglass

Reputation: 267

I feel like such a goof. See this Plunker. Turns out I just wanted ng-transclude.

Upvotes: 0

Sam
Sam

Reputation: 15761

I have created a Plunker that seems to work OK.

Is this what you are looking for in the behavior?

Upvotes: 0

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