I'm adding checkboxes with angularjs ng-repeat like this:
<div class="checkbox-circle" ng-repeat="t in tenders">
<input type="checkbox" checklist-model="contratacion.select" checklist-value="t.id" id="t.id">
<label for="t.id">{{t.name}}</label>
</div>
Where "tenders" is an array with "name" and "id" properties. The problem is that the id value of the input is not changing through the loop, an the resultant checkboxes have the same id value. Am I passing incorrectly the id values to the input? Is it wrong to expect "t.id" to change in the input id?
use the same curly brace notation inside of the non-angular attributes that you would use for normal text, ie:
<div class="checkbox-circle" ng-repeat="t in tenders">
<input type="checkbox" checklist-model="contratacion.select" checklist-value="t.id" id="{{t.id}}">
<label for="{{t.id}}">{{t.name}}</label>
</div>
Yes, you would be wrong; that is because id is a standard attribute where t.id is simply a simply. For Angular to convert this value into the expected id, you need to use interpolation: id="{{t.id}}".
The method you were attempting to use is an Angular expression that is only valid for certain attributes, where the directive (checklist-value for example) allows for it; otherwise you need to use the {{<expression>}} way to evaluate your value.
Related
I want to check the condition in Angular.
I want to look at two numbers that would enter Div if these two numbers were equal.
How can I check this condition?
I tried the following method and it was wrong.
<div *ngIf="'{{item1.menuID==item2.menuID}}'">
{{item1.title}}
</div>
The code you have there would evaluate to a string given you're adding single quotes around the condition, also you don't need to interpolate to access an object inside an ngIf.
If you want to evaluate if item1.menuID and item2.menuID are equal you would do
<div *ngIf="item1.menuID == item2.menuID">
{{item1.title}}
</div>
You don't require to use interpolation within [anyAttributeEnclosingSquareBrackets] or any angular attribute like *ngIf, *ngFor or some attributes like formControlName
For example:
<child-component [childAttribute]="parentComponentVariable">
<div *ngFor="let x of arrayVariable">Array Variable is present in component</div>
<input type="text" formControlName="name">
You can directly compare like below code:
<div *ngIf="item1.menuID==item2.menuID">
{{item1.title}}
</div>
Assuming that, item1 and item2 are not private variables of component and are available or initialise expectedly
Is there a way to pass an object as the value of a <select> <option> and then access the attributes of that object?
I’m trying to do something like this…
<div>
<select v-model="product.carrier" class="custom-select">
<option v-bind:value="{id: carrier.id, name: carrier.name}" v-for="carrier in carriers">
{{ carrier.name }}
</option>
</select>
</div>
<div v-if="product.carrier.name === 'Custom'">
<input type="text" v-model="product.custom_carrier">
</div>
I can get the ‘object’ from the option value, but can’t seem to access the id or name attributes on their own. I get an error trying to access the name attribute on product.carrier. I'm not sure if this just isn't possible or if I'm going about it the wrong way.
What I really need is the <select> to v-model the product.carrier_id but also use the name attribute to trigger the UI change since I don't want to use the ID from the 'Custom' option to do it.
I have the product available in the data object with the carrier_id attribute nested inside. Will this not work without specifically predefining name and id on the data object?
Maybe there's an easier way to achieve this that I'm not thinking of?
Use the v-model="product.carrier_id" and :value="carrier.id" and use a computed property to extract the name.
computed: {
carrier_name() {
const carrier = this.carriers.find(carrier => carrier.id === this.product.carrier_id)
return carrier ? carrier.name : ''
}
}
.
<div v-if="carrier_name === 'Custom'"> ...
I'm trying to show the name of the variable in my website written with AngularJS.
for example:
Backend code:
$scope.Bundles = {
Bundle1:["Sensor1","Sensor2"],
Bundle2:["Sensor1","Sensor2","Sensor3"],
Bundle3:["Sensor1","Sensor2","Sensor3","Sensor4"]
}
Frontend code:
<label ng-repeat="name in Bundles">
<div> *Want to show "Bundle#" (name), instead of it's value (the sensors)* </div>
</label>
Some notes:
From google searches, I always find people asking how to show the value of the variable, {{name}}, I know that, haven't found anything like the question im asking here
I need it because later in the code I will need to do a ng-repeat with "sensor in name" to show the sensors separately, so I really need a concrete solution and not a dirty one with another array holding the names.
Thank you.
You can access both the key and value using:
<label ng-repeat="(key, value) in Bundles">
<div> *Want to show {{ key }}, instead of it's value {{ value }} (the sensors)* </div>
</label>
You can use the tuple returned by the ng-repeat as stated in the docs https://docs.angularjs.org/api/ng/directive/ngRepeat
<label ng-repeat="(key,value) in Bundles">
You can use javascipt Object.keys(arr) to get all the keys and then iterate to the keys using ng-repeat.
$scope.BundleNumbers = Object.keys($scope.Bundles)
$scope.BundleNumbers will have ["Bundle1", "Bundle2", "Bundle3"]
<label ng-repeat="name in BundleNumbers">
{{name}}
</label>
The other and efficient/angular way to do is :
<label ng-repeat="(key,value) in Bundles">{{key}} </label>
Reference links:
Angular JS ng Repeat
JavaScript Object keys
I have this code
http://plnkr.co/edit/aycnNVoD96UMbsC7rFmg?p=preview
<div data-ng-app="" data-ng-init="names=['One']">
<input type="text" ng-model="names[0]">
<p>Looping with ng-repeat:</p>
<ul>
<li data-ng-repeat="name in names">
<input type="text" ng-model="name"> {{ name }}
</li>
</ul>
</div>
When i change value of name[0] in the first input box it changes values of the second input box.
But when i change value of name[0] in the second input box it does not change value of the first input box. Why?
It works if you bind your second input to : names[$index]
<input type="text" ng-model="names[$index]"> {{ name }}
This is due to ng-repeat creating a child scope, so the reference to name inside the ng-repeat is different to that original one in the names array, see here:
New AngularJS developers often do not realize that ng-repeat,
ng-switch, ng-view and ng-include all create new child scopes, so the
problem often shows up when these directives are involved. (See this
example for a quick illustration of the problem.)
Regarding as to why this happens, when you bind the input to name in names inside the ng-repeat, you are creating a new property on the new child scope created by the ng-repeat called name, and thus the ng-model of the textbox created by the ng-repeat is referencing a different name to that of the actual 0th element of the names array. As others have pointed out, if you use names[$index] you are implicitly referencing the 0th element of the names array, thus NOT creating a new name property on the child scope created by the ng-repeat. An angular best practice is not to have ng-models bound to primitives, rather objects, Sandy has mentioned in his answer if you bind to an object you will overcome this, and the 2 other posters have answered this by using $index to refer to the 0th element of the names array. This is one of the nucances of scope inheritance in angular.
A couple more handy links:
Here and here.
Just wanted to give my bit on this. Somewhat related to your problem as I see.
<body>
<div data-ng-app="" data-ng-init="names=[{value:'One'}, {value:'Two'}]">
<p>Looping with ng-repeat:</p>
<ul>
<li data-ng-repeat="name in names">
<input type="text" ng-model="name.value"> {{ name }}
</li>
</ul>
</div>
</body>
Instead of binding the array item directly to the control, I would prefer to create an object of the array and then bind value of each item. This way we can avoid reference problems.
A working prototype jsfiddle
Hope it helps.
You need to provide $index in your ng-model.
<li data-ng-repeat="name in names">
<input type="text" ng-model="names[$index]"> {{ name }}
</li>
You are binding ng-model="names[0]". So it means that you are binding value on first index of names array.
So when we write ng-model="names[$index]" in ng-repeat it means that all values will be bound accordingly into array. $index is an iterator offset of the repeated element.
names[0] = 'One'
names[1] = 'Two'
and so on!
I have a problem when binding ng-models with ng-repeat in a input tag type checkbox.
I will first attach my code and then explain more in detail.
app/main.html:
<div ng-repeat="feature in features">
<input type="checkbox" ng-model="features[$index].name">{{features[$index].name}}
</div>
<br></br>
<div class="highlighter">
<span ng-class="{emo:Emotions}">Manually</span> <span ng-class="{feel:Feelings}">create</span> the <span ng-class="{emo:Emotions}">entire</span>
</div>
main.js
angular.module('webClientApp')
.controller('MainCtrl', function ($scope,$http) {
[...other variables...]
$scope.features = [{'name':'Emotions'},{'name':'Feelings'}];
[...other parts of code]
});
Let's also assume that in the main.css file there are references to the classes .emo' and.feel' respectively to highlight the target word when the user ticks the box relative to the feature.
Now, the application works correctly when I listed all the inputs one by one like the following:
<input type="checkbox" ng-model="Emotions">Emotions
<input type="checkbox" ng-model="Feelings">Feelings
but I wanted to wrap it into an ng-repeat and list the features in the controller scope, since the features I will considered will be more. When I try the code above when I tick on the box the name changes to `true'.
I have read a lot about how to bind models to an ng-repeat inside a input tag but none of the solutions apply to my case.
Can someone please help me?
I changed thigs up quite a bit from your original model but... I did get something to behave similar to what you are looking for.
HTML
<div ng-app="webClientApp">
<div ng-controller="MainCtrl">
<div ng-repeat="(feature,enabled) in features">
<input type="checkbox" ng-model="features[feature]">{{feature}}</input>
</div>
<div class="highlighter">
<span ng-class="{emo:features.Emotions}">Manually</span> <span ng-class="{feel:features.Feelings}">create</span> the <span ng-class="{emo:features.Emotions}">entire</span>
</div>
{{features}}<br>
{{features.Emotions}}<br>
{{features.Feelings}}
</div>
JS
var app = angular.module('webClientApp', []);
app.controller('MainCtrl', function($scope, $http) {
$scope.features = {Emotions: true, Feelings: true};
});
Here's the fiddle: http://jsfiddle.net/rodhartzell/8YrxQ/
Hope this helps.
(i should add this as a comment, but I don't have enough rep. yet)
There is an issue on github which concerns your issue: https://github.com/angular/angular.js/issues/1404 and the comment of caitp shows some workarounds: https://github.com/angular/angular.js/issues/1404#issuecomment-30859987
You could (also) define a new javascript object in your controller and map the elements to that.
In controller: $scope.awnsers = {};
In template: ng-model="awnsers[feature.name]"
I hope this helps
You must use ng-checked instead of ng-model.
Check out this jsfiddle
http://jsfiddle.net/fizerkhan/z5z9s/24/
ngModel and ngChecked are not meant to be used together.
ngChecked is expecting an expression, so by saying ng-checked="master". If the expression is truthy, then special attribute "checked" will be set on the element
You should be able to just use ngModel, tied to a boolean property on your model. If you want something else, then you either need to use ngTrueValue and ngFalseValue (which only support strings right now), or write your own directive.