Angular conditional container element - html

Question

I have a large chunk of HTML in an ng-repeat that for certain elements has a container element and for others it does not. I'm currently achieving this with two ng-ifs:
<strike ng-if="elem.flag">
… <!-- several lines of directives handling other branching cases -->
</strike>
<div ng-if="!elem.flag">
… <!-- those same several lines copied-and-pasted -->
</div>
While this works, it means I have to remember copy-and-paste any edits, which is not only inelegant but also prone to bugs. Ideally, I could DRY this up with something like the following (inspired by ng-class syntax):
<ng-element="{'strike':flag, 'div':(!flag)}">
… <!-- lots of code just once! -->
</ng-element>
Is there any way to achieve a similarly non-repetitive solution for this case?

Answer 1

You can make such directive yourself.
You can use ng-include to include the same content into both elements.

Answer 2

Assuming the effect you desire is to have the text within your tag be striked through based on the condition of the elem.flag:
You could simply use the ng-class as follows
angular.module('ngClassExample', [])
.controller('elemController', Controller1);
function Controller1() {
vm = this;
vm.flag = true;
vm.clickItem = clickItem
function clickItem() {
// Toggle the flag
vm.flag = !vm.flag;
};
}
.strikethrough{
text-decoration: line-through
}
<script src="https://ajax.googleapis.com/ajax/libs/angularjs/1.2.23/angular.min.js"></script>
<div ng-app='ngClassExample' ng-controller="elemController as elem">
<div ng-class="{strikethrough: elem.flag}" ng-click="elem.clickItem()">
element content should be sticked through: {{elem.flag}}
</div>
</div>

Answer 3

You can do it with a directive
module.directive('myFlag', function() {
var tmpl1 = '<strike>...</strike>';
var tmpl2 = '<div>...</div>';
return {
scope: {
myFlag: '='
},
link: function(scope, element) {
element.html(''); // empty element
if (scope.myFlag) {
element.append(tmpl1);
} else {
element.append(tmpl2);
}
}
};
});
And you just use it like:
<div ng-repeat="item in list" my-flag="item.flag"></div>

Answer 4

You could create a directive which will transclude the content based on condition. For tranclusion you could use ng-transclude drirective, in directive template. Also you need to set transclude: true.
HTML
<my-directive ng-attr-element="{{elem.flag ? 'strike': 'div'}}">
<div> Common content</div>
</my-directive>
Directive
app.directive('myDirective', function($parse, $interpolate) {
return {
transclude: true,
replace: false, //will replace the directive element with directive template
template: function(element, attrs) {
//this seems hacky statement
var result = $interpolate(attrs.element)(element.parent().scope);
var html = '<'+ result + ' ng-transclude></'+result+'>';
return html;
}
}
})
Demo Plunkr

Answer 5

You can also use ng-transclude :
Create your directive :
<container-directive strike="flag">
<!-- your html here-->
</container-directive>
Then in your directive do something like :
<strike ng-if="strike">
<ng-transclude></ng-transclude>
</strike>
<div ng-if="!strike">
<ng-transclude></ng-transclude>
</div>