Why my ng-show doesn't work? - angularjs

I have the following code :
<div ng-init="showDetail = false">
<table>
<tbody>
<tr ng-repeat="dataTable in arrayTableData">
<td ng-repeat="data in dataTable.data" ng-click="showDetail = true;">{{data}}</td>
</tr>
</tbody>
</table>
<div ng-show="showDetail">
<button ng-click="showDetail = false">Close</button>
</div>
</div>
My variable showDetail changes value when you click on a data of the table, but my div showDetailCell not appear.
If I change the initialisation of showDetail with true the detail appear and disappear when you click on the button, but the click on the cell doesn't display showDetailCell.

ng-repeat will get its own scope. Due to Javascript inheritance, whenever variable from parent object is assigned in child scope will create new variable. It will no more reference to parent object variable. Better use . notation in the scope variable.
Instead of showDetail, use detail.toggle will solve the problem.

Related

How can i conditionally display an element using AngularJS

I want to display an element conditionally based on the value of another parameter PaymentTypeid. After setting the condition as below the element Payment Channel is not rendering in the UI:
<tr ng-init="paymentMode='BANK CABS'" ng-if="json.name == 'paymentTypeId' && json.property == '1'">
<td><strong>{{ 'label.heading.paymentchannel' | translate }}:</strong></td>
<td ><span >{{paymentMode}} </span></td>
</tr>
However when i refactor the markup as below the element is showing as :
<tr ng-init="paymentMode='BANK CABS'">
<td><strong>{{ 'label.heading.paymentchannel' | translate }}:</strong></td>
<td ><span >{{paymentMode}} </span></td>
</tr>
PaymentTypeId is in a json array defined as follows in the controller:
scope.details = {};
resourceFactory.auditResource.get({templateResource: routeParams.id}, function (data) {
scope.details = data;
scope.details.paymentMode="";
scope.commandAsJson = data.commandAsJson;
var obj = JSON.parse(scope.commandAsJson);
scope.jsondata = [];
_.each(obj, function (value, key) {
scope.jsondata.push({name: key, property: value});
});
});
In the view PaymentTypeid renders as :
<table class="table" data-ng-show="details.commandAsJson" data-anchor>
<tbody>
<tr data-ng-repeat="json in jsondata">
<td class="width20"><strong> {{json.name}}</strong></td>
<td class="width80">{{json.property}}</td>
</tr>
</tbody>
</table>
Any insight on what i might be getting wrong. Im not entirely sure between using ng-if/ng-show or whether im setting json.property correctly.
Assuming that you have knowledge of scope in AngularJS.
There is a difference between using ng-if and ng-show. Whenever you use ng-if , it creates it own child scope. and you can manage it in custom directive that deals with its child scope (child scope is not available in controller unless you write your code in a way, that will make it available in controller) and you can hack the scope to use it in controller too. But that is not the case in ng-show.
When you use ng-show it will not remove your HTML from the DOM tree but if you use ng-if it will also remove your html from DOM tree. (To assist your confusion which one to use)
You have a scope issue here , if i'm getting it right. Use ng-show and it will work.
<div ng-show="condition">
your html markup
</div>

Ng-click does not work outside of my tr tag AngularJS

I am working on an app and I cant seem to figure out why my ng-click only works inside of my (single) tr tag but as soon as I put it into another tr tag it stop working. Keep in mind it was working before I used the ng-repeat within the first tr tag. Here is what my code looks like, any advice would greatly help!
<table>
<tbody>
<tr>
<td ng-click="commentOpen = !commentOpen">
<div class="iconsize">Comment Closed</div>
</td>
<td ng-click="switchOpen = !switchOpen">
<div class="iconsize">Switch Closed</div>
</td>
</tr>
<tr>
<td>
<div ng-show="commentOpen == true">
<textarea>Comment Open</textarea>
</div>
<div ng-show="switchOpen == true">
<p>Switch On</p>
</div>
</td>
</tr>
</tbody>
</table>
I had the ng-repeat on the tag which was causing my ng-click to not fire. I ended up moving my ng-repeat to the tbody and the ng-click and ng-show started working again.
ngRepeat creates new scopes for its children, it just usually seems like it's accessing the same scope because this new scope inherits from its parent.
Meaning, commentOpen is actually referring to a property on the wrong scope.
Below are three potential ways for you to fix this:
1) controller as, and always refer to the controller you're after by name
2) $parent.commentOpen (Don't do this! It becomes very confusing as you nest)
3) Instead of commentOpen and switchOpen, you can use an Object (e.g. $scope.openControls = { comment: false, switch: false }, and then in the td tags you would write something like ng-click='openControls.comment = !openControls.comment'). This way it's passed inherited by reference (where as a boolean would be by value), and keeps synced.

ng-hide or ng-show does not work if its controlled from within a ng-repeat

I am trying to hide the div if any of the buttons in the ng-repeat is clicked. However it doesn't seem to work, it leads me to think if ng-hide or ng-show won't work if it is controlled from within a ng-repeat?
<div data-ng-hide="showChooseHardware">
<table class="table">
<tbody>
<tr data-ng-repeat="hardware in hardwares">
<td>{{hardware.name}}</td>
<td>
<button type="button" class="btn" data-ng-click="showChooseHardware=!showChooseHardware"/>
</td>
</tr>
</tbody>
</table>
</div>
This is due to the fact that ng-repeat creates a new scope for each template and due to how prototypal inheritance works in JavaScript (and AngularJS).
Use an object:
$scope.viewModel = { showChooseHardware: false };
HTML:
data-ng-hide="viewModel.showChooseHardware"
And:
data-ng-click="viewModel.showChooseHardware=!viewModel.showChooseHardware"
A great explanation on the issue can be found here.
I recommend using ng-showinstead in this case since the variable is called showChooseHardware.
ngRepeat directive creates new scope in every iteration,for every item in array.It can make a problem,which you have.

How do I bind object model within an ng-repeat directive to a single kendo-window popup

Html:
<table>
<thead>
<tr>
<th>Name</th>
<th>DOB</th>
</tr>
</thead>
<tbody>
<tr ng-repeat="member in model.Members" ng-dblclick="Member(member)">
<td>{{member.Name}}</td>
<td>{{member.DOB | date:'yyyy-MM-dd'}}</td>
</tr>
</tbody>
</table>
<div kendo-window="*dialog*" k-title="'Member Profile'" k-visible="false" k-modal="true" k-width="700" k-height="410" k-resizable="false">
<ng-familymember controller="familycontroller"></ng-familymember>
</div>
Controller:
function fooController($scope) {
$scope.Member = function (familyMember) {
$scope.*dialog*.center().open();
}
}
Problem:
I have a collection of objects (i.e. model.Members) used within an ng-repeat directive and I want to be able to double-click on a row and bind the object model to a kendo-window (popup). Inside my controller I'm passing in the model to a function (i.e. Member()) within the controller but I'm not sure how to pass/bind this model to the kendo-window? I could simply move the kendo-window html inside the ng-repeat and use the ng-model directive but that would repeat the kendo-window html (n) times and I don't want that.
Any Suggestions?
I've tried binding the member object to an $scope variable. (i.e. $scope.familyMember = familyMember;). Because the way Prototypal Inheritance works I'm actually creating a copy of the familyMember object and using that in the kendow-window popup.
You should know that I'm also setting up a $watch within the controller on the member object to notify other directives on the page of changes made within the kendo-window.
Any help would be appreciated... I'm a bit lost at this point...

How to get Angular to update the Ui from within the controller

I have the following html.
<div ng-controller="CustCtrl">
<table class="table table-condensed">
<thead>
etc.
</thead>
<tbody>
<tr ng-repeat="customer in customers" data-cust-id="{{customer.Id}}">
<td>
<button ng-model="Id" tracking-{{customer.Tracking}} ng-click="startTrackingCustById(customer.Id)">
</button>
</td>
etc.
</tr>
</tbody>
</table>
So the button has a class that is databound to the customer.Tracking value which is either true or false. When the button is clicked the startTrackingCustById() method is successfully called and the customer object in the customers object is successfully changed like customer.Tracking = true.
But the buttons class is not updated. What am I missing?
Look at using ng-class . For a boolean value in scope you would use:
ng-class="{'classNameToAddIfTrue':customer.Tracking}"
In the CustCtrl I wrapped the call that updated the customers array like this
$scope.$apply($scope.customers[i].Tracking = true);
Based on the suggestion in an answer I will link to when I find it that basically said "If you are having trouble updating the view you most likely need to use $scope.$apply
So that get's it to work. Now I need to figure out why and how.

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