Is there any way to use an object for ng-value of a radio button?
Imagine you have a radio button whose ng-model is an object, like this:
modelObject: {val:'', text:''}
And this would be the radio button:
<input type="radio" ng-model="data.modelObject" ng-value=""/>
Is there a way to do something like the following (obviously it doesn't work)
<input type="radio" model="data.modelObject" ng-value="val:option.id, text:option.text"/>
?
Thanks
I know I can use the ng-change directive. I'm just wondering if what I am asking it's possible, it would be very smart
EDIT:
as requested in the comments, I am giving a bit of extra info on my setup.
I want to save in the model both the value of the button and its label. So let's say I have an array in my controller called impactOptions and a ng-repeat directive to create the buttons:
<div ng-repeat="option in impactOptions" >
<input type="radio" ng-model="data.modelObject.val" id="rbGroup{{option.id}} ng-value="option.id"/>
<label for="rbGroup{{option.id}}">{{option.text}}</label>
</div>
The problem with this setup is that in that way I'm only saving the value of the button, while I would like to also save it's label. I really need it later.
I'm looking for a way to do something like this
<input type="radio" model="data.modelObject" ng-value="val:option.id, text:option.text"/>
You can have an object as the value in ng-value:
<div ng-app>
<input type="radio" ng-model="modelObject" ng-value="{val:1, text:'text'}"/>
<p>>{{modelObject|json}}<</p>
</div>
example fiddle
The values in ng-value can also be dynamic as well per request:
<div ng-app ng-init="opt={id: 1, text: 'some text'}">
<input type="radio" ng-model="modelObject" ng-value="{val:opt.id, text:opt.text}"/>
<p>>{{modelObject|json}}<</p>
</div>
updated example fiddle
You can use ng-value="option":
<input type="radio" model="data.modelObject" ng-value="option"/>
When you need id you can have it from $scope.option.id and when you need text you can access it from $scope.option.text. Check my answer here. Does this work for your case?
Related
I am new to Jasmine and Karma
I am testing an AngularJS application using Jasmine+Karma
My Html looks like this:
<div id="form">
<div id="car-type">
<input type="radio" ng-model="$ctrl.carType" ng-change="$ctrl.onTypeChange()" name="carType"
ng-value="true"/>
<span class="label">Honda</span>
<input type="radio" ng-model="$ctrl.carType" ng-change="$ctrl.onTypeChange()" name="carType"
ng-value="false"/>
<span class="label">Mazda</span>
</div>
</div>
However, when I try getting the value of the model bound to the input radio button, true is returned (because of ng-value I believe):
var wrapperForm = element[0].querySelector('#form');
// Returns true
console.log(wrapperForm.querySelector('#car-type input').value);
But, I want the model value bound to the radio button.
I don't know how to retrieve the model value bound to the radio button ($ctrl.carType).
Is there a way to retrieve it using the querySelector?
Can someone please help me out?
Yes:
document.querySelector("#car-type [type=radio]").getAttribute("ng-model")
However, you have two instances, you might want querySelectorAll instead.
what i am trying to do here is, i have an ng-repeat in a form and if i click anyone of those input buttons corresponding all buttons get disabled
<div ng-repeat="question in sinSurCtrl.singleSurvey" ng-show="!$first">
<hr>
<p>Q. {{question.questionText}}</p>
<form >
<div ng-repeat=" option in question.questionOptions track by $index">
<label>
<input name="options" type="radio" value="$index" ng-click="sinSurCtrl.questionId=question.questionId; sinSurCtrl.answer=$index+1; sinSurCtrl.createAnswer()" onclick="this.disabled = true">
<span> {{option}} {{$index+1}} {{question.questionId}} </span>
</label>
</div>
</form>
</div>
here is the view-
as you can see if i select anyone of those option it is getting disabled but what i am trying to do is if i attempt anyone option then options corresponding to the same question get disabled.
for example-
in Q3. which is a better orator ?
if i choose option (a) then it get selected and after that automatically bot options (a) and (b) get disabled.
Note- please try to keep solution completely in angularjs or if you want use affordable amount of javascript other then that please avoid using external libraries like jQuery(i know nobody in his senses will handle trouble of using jQuery and angular together but for the sake of example i have included its name)
Proposed solution with some suggested refactoring...
First change the ng-click directive to point to a new onOptionButtonClicked function on sinSurCtrl which takes in the two parameters question and index (which it needs to carry out it's work):
<div ng-repeat="question in sinSurCtrl.singleSurvey" ng-show="!$first">
<hr>
<p>Q. {{question.questionText}}</p>
<form>
<div ng-repeat="option in question.questionOptions track by $index">
<label>
<input
name="options"
type="radio"
value="$index"
ng-click="onOptionButtonClicked(question, $index)"
ng-disabled="question.disabled">
<span> {{option}} {{$index+1}} {{question.questionId}} </span>
</label>
</div>
</form>
</div>
Also take note of the newly added ng-disabled="question.disabled" directive. This is part of the mechanism that will enable/disable the question's controls.
Now move the variable assignments to the new onOptionButtonClicked function. The controller is generally a better place (than the view) for variable assignments, especially if there are several of them on the same directive.
sinSurCtrl.onOptionButtonClicked = onOptionButtonClicked;
function onOptionButtonClicked(question, index){
sinSurCtrl.questionId=question.questionId;
sinSurCtrl.answer=index;
sinSurCtrl.createAnswer();
question.disabled = true; // <--- This is what disables the option buttons
}
This is where an answered question object gets it's disabled property set to true. This in combination with the ng-disabled directive mentioned previously is what disables the option buttons.
On your controller, create a function that checks if a given questionId has been answered and return truthy if it has. Call that function in ng-disabled in the input tag:
<input type="radio" ng-disabled="sinSurCtrl.questionHasAnswer(question.questionId)" ... />
I have a model returning in the storeLocations object with a isDefault value. if isDefault returns true, I wan't to set that radio button in the group as checked.
Not sure if I need to do a $each(data, function(index,value) and iterate through each object returned or if there's an easier way to do this using angular constructs.
Object:
storeLocations = [
{
... more values,
isDefault: true
}
]
Markup:
<tr ng-repeat="location in merchant.storeLocations">
<td>{{location.name}}</td>
<td>{{location.address.address1}}</td>
<td>{{location.address.address2}}</td>
<td>{{location.address.city}}</td>
<td>{{location.address.stateProvince}}</td>
<td>{{location.address.postalCode}}</td>
<td>{{location.address.country}}</td>
<td>{{location.website}}</td>
<td>{{location.zone}}</td>
<td><input type="radio" ng-model="location.isDefault" value="{{location.isDefault}}" name="isDefault_group"></td>
Use ng-value instead of value.
ng-value="true"
Version with ng-checked is worse because of the code duplication.
If you have a group of radio button and you want to set radio button checked based on model, then radio button which has same value and ng-model, is checked automatically.
<input type="radio" value="1" ng-model="myRating" name="rating" class="radio">
<input type="radio" value="2" ng-model="myRating" name="rating" class="radio">
<input type="radio" value="3" ng-model="myRating" name="rating" class="radio">
<input type="radio" value="4" ng-model="myRating" name="rating" class="radio">
If the value of myRating is "2" then second radio button is selected.
One way that I see more powerful and avoid having a isDefault in all the models is by using the ng-attributes ng-model, ng-value and ng-checked.
ng-model: binds the value to your model.
ng-value: the value to pass to the ng-model binding.
ng-checked: value or expression that is evaluated. Useful for radio-button and check-boxes.
Example of use:
In the following example, I have my model and a list of languages that my site supports. To display the different languages supported and updating the model with the selecting language we can do it in this way.
<!-- Radio -->
<div ng-repeat="language in languages">
<div>
<label>
<input ng-model="site.lang"
ng-value="language"
ng-checked="(site.lang == language)"
name="localizationOptions"
type="radio">
<span> {{language}} </span>
</label>
</div>
</div>
<!-- end of Radio -->
Our model site.lang will get a language value whenever the expression under evaluation (site.lang == language) is true. This will allow you to sync it with server easily since your model already has the change.
Ended up just using the built-in angular attribute ng-checked="model"
As discussed somewhat in the question comments, this is one way you could do it:
When you first retrieve the data, loop through all locations and set storeDefault to the store that is currently the default.
In the markup: <input ... ng-model="$parent.storeDefault" value="{{location.id}}">
Before you save the data, loop through all the merchant.storeLocations and set isDefault to false except for the store where location.id compares equal to storeDefault.
The above assumes that each location has a field (e.g., id) that holds a unique value.
Note that $parent.storeDefault is used because ng-repeat creates a child scope, and we want to manipulate the storeDefault parameter on the parent scope.
Fiddle.
Just do something like this,<input type="radio" ng-disabled="loading" name="dateRange" ng-model="filter.DateRange" value="1" ng-checked="(filter.DateRange == 1)"/>
I need to get the class attribute of checked radio button, with name="radio".
Used the code that's working fine in Firefox, but fails in IE.
val = $('input:radio[name=radio]:checked').attr('class');
How can i accomplish this?
There is no psuedo-class :radio. I think you meant [type=radio].
As comments says, I think you should use type instead of name. But i think you have named your input as radio because you can find this specific input. If you just use type selector you will catch every single selected radio input on page.
<input type="radio" name="radio" class="ey" /> Male<br />
So, if your page have more forms, you should specify a parent or form to avoid conflicts. Set a id for your form and try to find it by form id and radio type like this:
<form id="myForm">
<input type="radio" name="radio" class="ey" /> Male<br />
</form>
val = $("#myform input[type='radio']:checked").attr('class');
I hope it can help you :)
Wondering how to approach this... Best to look at the picture to visualize the, hopeful, UI for a form for choosing options in a list. Users need to be able to make a first choice and a second choice for each option. One and only one can be selected in each column, and for that matter, each row.
At first I thought, naturally, 2 radio button groups might work...but not sure how? Perhaps hidden radio_buttons whose values are manipulated via Javascript/JQuery in a click event on each div? Event should also check/handle "collisions" when user tries to select same option for both choices.
Or, would this perhaps be better with two hidden collection_selects...or even simpler, just two hidden text_fields...which javascript can populate with the ID of the selected option?
Or maybe I'm overlooking something more obvious.
I'm new(ish) to javascripting with Rails so looking for advice/validation.
Thanks.
I think something like this is what your looking for:
HTML:
<form>
<p class="exclusiveSelection">
Selection One
<input type="radio" name="firstColumn"/>
<input type="radio" name="secondColumn"/>
</p>
<p class="exclusiveSelection">
Selection Two
<input type="radio" name="firstColumn"/>
<input type="radio" name="secondColumn"/>
</p>
<p class="exclusiveSelection">
Selection Three
<input type="radio" name="firstColumn"/>
<input type="radio" name="secondColumn"/>
</p>
<input type="button" id="submitForm" value="Submit">
</form>
JavaScript:
$(function() {
$(".exclusiveSelection input[type='radio']").click(function() {
$exclusiveSelection = $(this).parent();
$('input[type='radio']', $exclusiveSelection).attr('checked', false);
$(this).attr('checked', true);
});
});
It ensures that the values are unique across column and row and works with jQuery 1.2.6 - 1.7.1. There is also a JSFiddle example.
If you need help adapting this for Rails let me know, however it should be straight forward.