I have a HTML-Document containing moustache expressions that angular-dart evaluates very well:
</head>
<body ng-cloak>
<ctrlTextElements>
<div id="stage">outside: {{ctrlTextElements.test1('three')}}</div>
</ctrlTextElements>
I want to dynamicaly add some HTML with moustache expression like so:
CtrlTextElements.addTextElement(mousePos.x, mousePos.y);
var div = dom.querySelector('#stage');
HttpRequest.getString("../path/text.html").then((r) {
div.children.add(new Element.html(r, validator: new AllowAllValidator()));
});
The content of the added text.html looks like this:
<div>inside: (not evaluated): {{ctrlTextElements.test1('three')}}</div>
That's the result in the browser:
outside: three
inside: (not evaluated):{{ctrlTextElements.test1('three')}}
How can I reevaluate the moustache expressions inside content that has been applied after the page was loaded?
The problem is that you are mixing jQuery like logic with angular logic here : manipulating the dom 'by hand' is rarely a good solution.
The problem here is that your newly added binding has not been compiled by angularjs = it has not been indexed as a directive that should be watched for and updated when scope changes.
Either you try a more angular way, for example using ng-hide or ng-repeat directive to display your content according to the controllers $scope (or another custom directive), or you try to $compile your newly added directive ( but this is bad ) : https://docs.angularjs.org/api/ng/service/$compile .
Maybe try in your controller :
$scope.$compile( div );
Not sure of the syntax though. Maybe you would need to write
<span ng-bind="..."></span>
instead of
{{ ... }}
to make it work.
#Alexhv is right. Sorry for my previous answer. I assumed it is about Polymer. Was already time for bed.
You can find a code example in my answer to this question: setInnerHtml doesn't evaluate Mustache
The pub package bwu_angular (http://pub.dartlang.org/packages/bwu_angular) contains this code as a Decorator (Directive) named bwu-safe-html
Related
I am trying to modify the project ngImgCrop (https://github.com/alexk111/ngImgCrop) for allowing crop multiple images in the same page, but I do not know how many images I would need, this is created dynamically. So, I need to associate to the 'image' field of a dynamic value, and at the same time I put this variable in my scope. The problem is that this label is not evaluating the angular code.
<div class="cropArea" id="{{'person'+person.Id}}">
<img-crop image="{{'person'+person.Id}}" result-image="myCroppedImage"></img-crop>
</div>
Even when they have the same code, when the page is loaded the html code shows:
<div class="cropArea" id="person12345">
<img-crop image="{{'person'+person.Id}}" result-image="myCroppedImage"></img-crop>
</div>
In my scope since the beginning the variable $scope.person12345 is created, but It is impossible to make the binding without this part.
What can I do?
Note:
In my init() function I create all the variables:
angular.forEach(persons, function (person, index) {
$scope['person'+person.Id]='';
});
I actually can see the variable $scope.person12345 when the page is loaded. In any case why does the expression worked for the div and not for the img-crop?
Please put your expression as a function which will execute in the Controller. string(appending string) will return by a function like below.
<div class="cropArea" id="{{'person'+person.Id}}">
<img-crop image="getImagePath(person.Id)" result-image="myCroppedImage"></img-crop>
</div>
Controller like below:
$scope.getImagePath = function(id){return 'person'+id+'.png';};
Some how there is no parser available in the directive of image, that's why you need to give parsed expression via a controller.
I get JSON like this
{
"lots of":"keys"
"description" : {
"key":"Some sample key",
"value":"This is the markup™"
}
}
from server and I ultimately iterate the description objects and populate table rows with two columns: one for the key and one for the value.
I have tried putting on my <td> tag ng-bind-html as well as injecting $sce into my controller and using trustAsHtml but so far the string always displays as it is in the JSON. Not every value will be HTML but I can easily detect based on the key if HTML is a possibility. It seemed when I put in the directive on the td it did not display anything if no HTML was present. I am interested in using something that can allow HTML in the value but not require it so I can display either
HTML fragment
<tr ng-repeat="(key, val) in record.description">
<td>{{key}}:</td>
<td>{{val}}</td>
</tr>
I created a quick fiddle here:
https://jsfiddle.net/frishi/mvw97s3q/6/
I used angular-sanitize, which I am not sure you mentioned injecting in your module dependency list. Either way, the example works simply by using ng-bind-html
Relevant docs page: https://docs.angularjs.org/api/ng/directive/ngBindHtml
It works by using the directive ng-bind-html on the element you want to display the HTML string in. You use it like so:
<p ng-bind-html="data.firstName"></p>
assuming that data.firstName = "<strong>FeeFee</strong>" or something like that.
I would also like to add that Angular does not allow this natively because of legitimate security concerns. That and the fact that allowing arbitrary HTML to be rendered might not always produce desirable results. Your page layout could quite possibly break because of some HTML you allowed to be passed through.
Angular was designed with security in mind, and will prevent you from displaying HTML from raw strings whenever possible - to prevent various injection attacks.
Here is workarround for your problem: AngularJS: Insert HTML from a string. Generally you should use ng-bind-html insted of ng-bind (this is used by curly braces).
I have a few bits of HTML like
<p class="noresults">{{numberOfContacts}} Results Are Available</p>
Is it possible for me to hide {{numberOfContacts}} until Angular has loaded? So it would just say Results Are Available
I've seem some solutions such as hiding the entire body until Angular has loaded, but I'd rather not do that if possible.
Yes, use ng-cloak. Simply add class="ng-cloak" or ng-cloak to an element like this
Using directive <div ng-cloak></div>
Using class <div class="ng-cloak"></div>
It's simply a set of CSS rules with display: none !important and as Angular has rendered your DOM it removes the ng-cloak so an element is visible.
use <span ng-bind="numberOfContacts" /> instead of {{numberOfContacts}}
Sometimes, even if I used the ng-cloak, I could still see the braces for a few seconds. Adding the following style resolved my issue:
[ng-cloak]
{
display: none !important;
}
Please see this link link for more explanation.
Hope it helps :D
This is typically only an issue when working with complex content on really slow devices. In those instances, there can be a brief moment when the browser displays the HTML in the document while AngularJS is parsing the HTML, getting ready, and processing the directives. In this interval of time, any inline template expressions you have defined will be visible to the user. Most devices nowadays have pretty good browsers which are quick enough to prevent this from being an issue. There are two ways to solve the problem.
Avoid using inline template expressions and stick with ng-bind directive.
(Best) Use the ng-cloak directive which will hide the content until Angular has finished processing it. Basically, the ng-cloak directive uses CSS to hide the elements and angular removes the CSS class when the content has been processed, ensuring that the user never sees the {{ and }} characters of a template expression.
One strategy to consider is using the ng-cloak directly to the body element, which will ensure that the user will see an empty browser while AngularJS loads. However, you can be more specific by applying it to parts of the document where there are inline expressions.
I have seen issues with ng-cloak not working when added to an element. In the past, I have worked around this issue by simply adding ng-cloak class to element.
You can use ng-bind instead of expression like
<span ng-bind="data"></span>
I am using angular's ng-include like this :
main html:
<span ng-include="'tpl.html'" ng-controller="TplCtrl" onload="loadMe()"></span>
template tpl.html:
<h2>{{ tplMessage }}</h2>
the controller:
$scope.loadMe = function () {
$scope.tplMessage = 'template';
}
})
this was working fine with angularjs 1.1.5 but not anymore in 1.2.0 rc 3
here is a plunkr :
http://plnkr.co/edit/zYRevS?p=preview
any idea how to make this work with 1.2.0 ?
edit:
i saw this : https://github.com/angular/angular.js/issues/3584#issuecomment-25279350
but can't find the answer to this problem here.
ok i found the answer here : https://github.com/angular/angular.js/issues/3584#issuecomment-25857079
ng-include can't be on the same element as ng-controller. In 1.1.5, it was working
here is a working updated plunker with an html element wrapping the ng-include:
http://plnkr.co/edit/CB8jec?p=preview
It seems to have to do with you mixing 2 things on the same tag - it has both ng-include and ng-controller on it. put your span inside of a new one and move the ng-controller to the outside tag.
They might'of changed the order in which these attributes are processed. In general I think mixing them on the same tag is not a good idea.
Because it's just broken, and there is currently no workaround.
According to the change long:
"previously ngInclude only updated its content, after this change ngInclude will recreate itself every time a new content is included. This ensures that a single rootElement for all the included contents always exists, which makes definition of css styles for animations much easier."
but instead of being improved, it appears to have been broken.
According to the comments here the current implementation is broken.
Other sources will tell you the same.
I have a directive which loads content from an external HTML file. Passed into this directive is some scope data which is used in the rendering of that HTML fragment. e.g.
<div class="{{cls}}" data-obj="{{obj}}" data-id="{{id}}">
<!-- remainder of content here -->
</div>
What I would like to do within this directive is to load a further HTML partial within this based on the original scope data passed into the directive. I can't seem to get this to work, but it should be something along the lines of the following:
<div class="{{cls}}" data-obj="{{obj}}" data-id="{{id}}">
<!-- remainder of content here -->
<div ng-include="partials/{{obj}}.html></div>
</div>
Using this, the file doesn't get included, but I don't get any errors either. Can anybody assist me here?
NB: I read this, which is a similar issue, but hasn't helped me.
UPDATE - I noticed in Chrome dev tools that the URL is being resolved as expected, but the file contents are not getting included. I thought from the docs that ng-include loaded and compiled the requested fragment, so I was expecting this to work.
Found a solution in the end, by declaring the following in the directive:
<div ng-include src="view.getView()"></div>
and the following in the directive controller:
$scope.view = {
getView: function() {
return "partials/" + $scope.obj + ".html";
}
};
Works perfectly now!
In comment on the comment of Shane Gadsby: it is not <div ng-include src="'partials/'+{{obj}}+'.html'"></div> but <div ng-include src="'partials/'+obj+'.html'"></div>.
Your comment explains why 'this is what you need to force it from object literals to a string', so everything not in single quotes is handled by the compiler as a scope object.