I want to built an ng-repeat with dynamic buttons that change according to $state.params so I wrapped them in a directive.
link:function(scope,element,attrs) {
$rootScope.$watch('params.source',function() {
var link = scope.link;
var name = scope.name;
var href = $state.href('home',{source:link});
if($state.params.source.indexOf(scope.link) == -1) {
var template = '<a href="'+href+'" class="btn
btn-default">'+name+'</a>';
}
else template = '<a href="'+href+'" class="btn
btn-default">'+name+' what!?</a>';
el = $compile(template)(scope);
element.replaceWith(el);
});
}
But after the the first change of params, element is forgotten and answers with Cannot read property 'replaceChild' of null
How can I replace element?
Edit: I need to swap the whole Element for sowmething else in final product, that's why I can't use ng-show or ng-if
Thanks!
You may be better off using ng-hide or ng-show in your html. Maybe something like this:
<div ng-repeat="yourArray as item">
<a href="{{item.href}}" class="btn
btn-default">{{item.name}} <section ng-show="conditionToShow">what!?</section></a>';
</div>
This is a bit cleaner of a solution and it keeps you from having to add a watch. Watches are expensive and you should avoid them if at all possible.
Edit:
<div ng-repeat="yourArray as item">
<div class="singleBtn" ng-show="conditionToShow" >
{{item.name}}
</div>
<div class="multiBtn" ng-hide="conditionToShow">
<a //rest of multi btn code
</div>
</div>
Because of the fact that Angular provides both ng-show and ng-hide directives this allows you to control the presentation of these elements based on just one conditional.(i.e. your state.params)
When it is true, it will show just one btn and when it's false it will show multiple buttons. If the logic needs to be reversed, just switch ng-show and ng-hide.
Hopefully I understood your need better this time.
Related
I have a list of items (divs) with a button. When I click on one of this buttons I can access the element using
$event.currentTarget
that returns some thing like
<div ng-click="myFunc()">
<i class="someclass"></i>
<span>bla bla</span>
</div>
how can I access and elements to modify attributes like class?
Don't. Use existing directives like ng-class or ng-if, etc in your html templates.
<div ng-click="clicked = true">
<span ng-class="{'someclass': clicked}">bla bla</span>
</div>
See stackblitz
Although you can get the html dom element and edit it you should only do this as a last option and other angularjs supported methods have failed or are not supported.
template
<div ng-click="myFunc($event)">
<i class="someclass"></i>
<span>bla bla</span>
</div>
controller
$scope.myFunc(event) {
var elem = angluar.element(event.currentTarget);
elem.children(".someclass").removeClass("someclass")
}
On the process of trying to learn angularjs, I am creating a set of divs using ng-repeat. I have five divs in all. I am only displaying the first div using $firstdirective component.
<div class="container" ng-app="demoApp" ng-controller="demoController">
<div class="row" ng-repeat="job in jobs" ng-hide="!$first">
<div class="col-md-4">
{{job}}
</div>
<div class="col-md-4">
<button class="btn-primary btn-xs add" ng-click="showNext($event)" ng-hide="$last">Add</button>
<button class="btn-primary btn-xs delete" style="display: none;">Delete</button>
</div>
</div>
</div>
That works.
Now, each div has two buttons, Add and Delete. When I click add I want to hide the add button and delete button of the current row and open the next row. So I wrote,
$scope.showNext = function(evt) {
var elm = evt.target;
$(elm).hide();
$(elm).next().hide();
$(elm).closest("div.row").next().slideDown();
};
This is not working as ng-hide is overriding my slideDown. What is the angularjs way of doing it?
Also I would like the delete button only on the $last visible row && !first. How to find last visible row in ng-repeat?
Fiddle: https://jsfiddle.net/codeandcloud/u4penpxw/
You shouldn't manipulate the DOM with things like $(elm).hide();, you should use ng-class= to let Angular add classes that hide or show the elements. If you switch your ng-repeat to ng-repeat="job in jobs track by $index", you could write something like that in your showNext()-function:
$scope.showNext = function(index) {
$scope.currentJob = $scope.jobs[index]
}
and call it like ng-click="showNext($index) - of course you'd need to do some refactoring as well. But then you could write something like ng-class="{hidden: (job == currentJob}" to hide all buttons except in the current row.
There's a lot of good thoughts in this q&a: "Thinking in AngularJS" if I have a jQuery background?
I'm trying to do a very simple thing. I'm displaying a list of values with Edit links beside them. Clicking the edit link reveals a form that lets you update the value.
(I've simplified the question so the items just have one field "name". My actual use case has more fields, but is canonically equivalent.)
I've run into something that looks like a bug in Angular, but given my limited experience with it, I'm not so sure. Here's how I'm trying to do it:
<div ng-repeat-start="item in items" ng-controller="ItemCtrl as ctrl" ng-hide="ctrl.isEditing">
<span>Name: {{item.name}}.</span>
<a href='#' ng-click='ctrl.startEditing()'>Edit</a>
</div>
<div ng-repeat-end ng-show="ctrl.isEditing">
<input type='text' ng-model='item.name'/>
<a href='#' ng-click='ctrl.save()'>Save</a>
</div>
My controller looks like this:
app.controller('ItemController', function() {
this.isEditing = false;
this.startEditing = function() { this.isEditing = true; }
this.save = function() { this.isEditing = false; }
});
Clicking on Edit link calls the right controller function, and the first div hides. But the second div does not hide.
When I rearrange the code to look like this (essentially wrapping the two divs with a wrapper element), all is well.
<div ng-repeat="item in items" ng-controller="ItemCtrl as ctrl">
<div ng-hide="ctrl.isEditing">
<span>Name: {{item.name}}.</span>
<a href='#' ng-click='ctrl.startEditing()'>Edit</a>
</div>
<div ng-show="ctrl.isEditing">
<input type='text' ng-model='item.name'/>
<a href='#' ng-click='ctrl.save()'>Save</a>
</div>
</div>
Any idea what is technically wrong with the first version? Note that the <input> boxes do get populated with the right values from item.name.
PS: There's a reason why I'm trying to keep the two divs siblings: in my use case, they are actually implemented as two trs which are supposed to appear right below each other in a table.
It's not a bug from angular but it is quite logical.
<div ng-repeat-start="item in items" ng-controller="ItemCtrl as ctrl" ng-hide="ctrl.isEditing">
<span>Name: {{item.name}}.</span>
<a href='#' ng-click='ctrl.startEditing()'>Edit</a>
</div>
<div ng-repeat-end ng-show="ctrl.isEditing">
<input type='text' ng-model='item.name'/>
<a href='#' ng-click='ctrl.save()'>Save</a>
</div>
If you see the above code you have injected controller only to the first div so obviously sibling div doesn't know what is ctrl or ItemCtrl until and unless you do as in you second way.
So if you want to achieve it as sibling, if you are using routing then add the controller attribute in your route path.
So that the controller will be active for that entire template and you can achieve what you want.
Hope it helps.
Thats because controller has its own scope. When you placed controller ONLY on your first div controllers' scope is limited to only this one div. When you wrapped both your divs inside another and place controller on wrapper, controllers' scope now is all that inside this wrapper. So in this case this works fine and this is not the angular bug
I'm fairly new to AngularJS and I can't seem to find a way to do this appropriately. I created a custom directive to Apply a function a pass in the row Index. However, I can't seem to think of the way to show items in a row. What would be the best way to do this? I want to show specific and hide a target row via controller.
HTML:
<div class="row" data-index="{{$index}}">
<div>other information</div>
<div class="item hidden" ng-class="{hidden: hidden[{{$index}}]}">
Item
</div>
</div>
My Directive:
scope.$apply(function () {
scope.$parent.showItem(index);
});
Controller:
$scope.teamDrop = function(index) {
$scope.hidden[index] = false;
};
You can use the ng-show and ng-hide directives to hide and show elements.
You can also use the ng-if directive to remove elements from the dom.
For your example I'd change your ng-class to an ng-hide
<div class="row" data-index="{{$index}}">
<div>other information</div>
<div class="item hidden" ng-hide="hidden[$index]">
Item
</div>
</div>
You also don't need to use the {{}} syntax in the ng-class becausue it's already expecting an angular expression, that's for data binding.
I'm trying to create a form like below, this using ng-repeat directive in angular and it whenever I created a new row complains
"Duplicates in a repeater are not allowed.".
While I understand the solution for this is by putting "track by $index", however it causes another issue, which clicking delete on one row deletes the value of other field. So I suspect that track by index is OK for static text but not input form. So how to use ng-repeat correctly for my case? See my JSFiddle for demo.
My current code :
HTML
<div class="row-fluid spacer10">
<a ng-click="addAKA()" class="btn btn-primary spacer5 left30"><i class="icon-plus icon-white"></i> Add New Alias</a>
</div>
<div class="row-fluid spacer10"></div>
<div class="row-fluid spacer5" ng-repeat="item in aliasList track by $index">
<input type="text" class="span6 left30" ng-model="item">
<button class="btn btn-danger" ng-click="deleteAKA($index)">delete</button>
<BR/>
</div>
Javascript
$scope.addAKA = function ()
{
if($scope.aliasList == null)
{
$scope.aliasList = [];
}
$scope.aliasList.push("");
$scope.aliasjson = JSON.stringify($scope.aliasList);
}
$scope.deleteAKA = function (idx)
{
var aka_to_delete = $scope.aliasList[idx];
$scope.aliasList.splice(idx, 1);
$scope.aliasjson = JSON.stringify($scope.aliasList);
}
Just change the way you iterate. Instead of this:
<div ng-repeat="item in aliasList track by $index">
do this:
<div ng-repeat="item in aliasList">
$index will be still available inside the element, use like this:
<button ng-click='deleteItem($index)'>Delete</button>
See this JSFiddle for a correct solution
There are multiple problems with your approach.
Since you are directly binding a string to ng-model and ng-repeat creates a child scope, any change to the value would not reflect back. Change you scope model to something like
$scope.list = [{text:"one"},{text:"two"}];
and bind to i.text instead of binding to i as you did earlier.
The deleteItem method was called using item instead of index. See my fiddle here
http://jsfiddle.net/JS6aJ/1/