I have 2 radio groups with 2 radio buttons each, age group (AG1, AG2) and language ("one language", "multilingual"). Depending on which radio button is checked, I want to fill a select box with different options. So there's 4 different combinations = 4 different sets of options (4 AngularJS scope properties). I got it to work with one radio group using ng-model, but I can't figure out how to do this with two. I tried using jQuery but it won't work, I've been told that I shouldn't mix AngularJS and jQuery.
HTML (ng-value is obviously wrong here, I don't know what to set as value)
<div class="form-check">
<input class="form-check-input" type="radio" name="AG" id="AG1" ng-model="values" ng-value="PD1E">
<label class="form-check-label" for="AG1">4 - 5 years</label>
</div>
<div class="form-check">
<input class="form-check-input" type="radio" name="AG" id="AG2" ng-model="values" ng-value="PD2M">
<label class="form-check-label" for="AG2">6 - 7 years</label>
</div>
<div class="form-check">
<input class="form-check-input" type="radio" name="language" id="one" ng-model="values" ng-value="PD1E">
<label class="form-check-label" for="one">one language</label>
</div>
<div class="form-check">
<input class="form-check-input" type="radio" name="language" id="multi" ng-model="values" ng-value="PD1M">
<label class="form-check-label" for="multi">multilingual</label>
</div>
<br>
<select id="inputPD" class="form-control">
<option ng-repeat="x in values">{{x}}</option>
</select>
AngularJS scope properties
$scope.PD1E = [
"1-one", "0,3", "0,5", "0,8", "1,8", "5,9", "12,8", "32,2", "58,8", "81,6", "100,0"
];
$scope.PD2E = [
"2-one", "0,7", "0,9", "2,0", "7,9", "21,3", "41,5", "100,0"
];
$scope.PD1M = [
"1-multi", "2,1", "3,5", "5,6", "12,5", "19,4", "33,3", "48,6", "61,8", "82,6", "95,8", "100,0"
];
$scope.PD2M = [
"2-multi", "0,5", "2,2", "7,6", "23,8", "49,2", "70,3", "100,0"
];
So if I select AG1 + one, it should display PD1E in the select box.
AG2 + one = display PD2E
AG1 + multi = display PD1M
AG2 + multi = display PD2M
One approach is to use the ng-if directive with the options:
<select id="inputPD" ng-model="selectPD" class="form-control">
<option ng-repeat="x in PD1E" ng-if="radio1=='1' && radio2=='E'">{{x}}</option>
<option ng-repeat="x in PD2E" ng-if="radio1=='1' && radio2=='E'">{{x}}</option>
<option ng-repeat="x in PD1M" ng-if="radio1=='2' && radio2=='M'">{{x}}</option>
<option ng-repeat="x in PD2M" ng-if="radio1=='2' && radio2=='M'">{{x}}</option>
</select>
The <option> elements will only be added when the condition is true.
I have two dropdown lists. List1 has options a, b, c, d. List2 has options e, f, g, h. I want when a in List1 is selected. The value in List 2 should be e and at the same time disable the selection in List2. I would like to know how I can implement it? Thanks in advance!
<div class="form-group">
<label>List1 </label>
<div class="col-sm-6">
<select class="form-control" ng-model="list1">
<option ng-repeat="option in list1Choice" value={{option}} ng-selected="option == list1" ng-bind="option"></option>
</select>
</div>
</div>
<div class="form-group">
<label>List2 </label>
<div class="col-sm-6">
<select class="form-control" ng-model="list2">
<option ng-repeat="option in list2Choice" value={{option}} ng-selected="option == list2" ng-bind="option"></option>
</select>
</div>
</div>
Here is one way to do it.
http://jsfiddle.net/muw4aect/
There are two key elements. One, the ng-disabled directive in the second select.
//when $scope.select1 is equal 'a'
ng-disabled="select1 == 'a'"
The second key element is the ng-change, that calls a function to set the value for the second select.
$scope.onChange = function() {
if($scope.select1 == 'a') {
$scope.select2 = 'e';
}
}
Surely there are other ways to do it, this is just one.
Using AngularJS, there is a requirement to show a dropdown with a selected value:
- When user selects a different value we should show a warning message and shouldn't proceed with update (save button disable).
- When user reverts to the original value, the message should hide and able to update (save button enable)
<select ng-model="vm.sldetails.AgencyGroupID" onchange=""
ng-options="a.AgencyGroupID as a.AgencyGroupName for a in vm.agencygroups">
<option value="">--Select--</option>
</select>
<label ng-show="">Warning message</label>
Instead of calling an event in controller, can we achieve directly in Onchange event?
<div class="col-md-2">
<select class="form-control" ng-model="vm.sldetails.AgencyGroupID"
ng-options="a.AgencyGroupID as a.AgencyGroupName for a in vm.agencygroups">
<option value="">--Select--</option>
</select>
</div>
HTML:
<label class="col-md-2 control-label text-align-left" id="lblWarningMessage" ng-if="vm.sldetails.AgencyGroupID==='your value'">Warning message</label>
In label tag,your value should be replaced by ur compare value
I guess you could try something like this:
<select ng-model="vm.sldetails.AgencyGroupID" ng-change="vm.selectChanged()"
ng-options="a.AgencyGroupID as a.AgencyGroupName for a in vm.agencygroups">
<option value="">--Select--</option>
</select>
<label ng-show="vm.showWarning">Warning message</label>
And in js:
vm.selectChanged = function(){
if(vm.sldetails.AgencyGroupID !== 'the initial value'){
vm.showWarning = true;
}else{
vm.showWarning = false;
}
}
Using Angular 2: Essentially, if attr1 is selected in the first dropdown, I want ops1 to populate the list of the second dropdown, and if attr2 is selected in the first dropdown then ops2 and so on. I tried adding a *ngSwitch to the select and option, but then found out you can only add one * to an element. I also want this to update live. In other words, if the user first selects attr1 then switches to attr2 it should update the second dropdown accordingly
<div class="form-group">
<label for="attribute">Attribute</label>
<select class="form-control" id="attribute" [(ngModel)]="model.attribute" name="attribute" required>
<option *ngFor="let attr of attributes" [value]="attr">{{attr}}</option>
</select>
</div>
<div class="form-group">
<label for="operator">Operator</label>
<select class="form-control" id="operator" [(ngModel)]="model.operator" name="operator" required>
<option *ngFor="let op of operators" [value]="op">{{op}}</option>
</select>
</div>
export class MyModelFormComponent {
attributes = ['attr1', 'attr2'... 'attrN'];
ops1 = ['x', 'y', 'z'];
ops2 = ['A', 'B', 'C'];
...
model = new MyModel();
}
I created a dictionary/object of operators as values and the attributes as the keys. The code for operator looks like this:
<select class="form-control" id="attribute" [(ngModel)]="model.attribute" name="attribute" required>
...
<option *ngFor="let op of operators[model.attribute]" [value]="op">{{op}}</option>
Using AngularJS I have a list of selected option and one additional "New" option. What I am trying to do is, when "New" option is chosen it will show a text-box to add a new value.
<select ng-model="group.name" ng-options="bl.Name for bl in Groups" >
<option value="VALUE FROM TEXT BOX">New</option>
</select>
<div class="col-md-4" ng-show="WHEN NEW OPTION IS Chosen ">
<input class="text-box" type="text" name="NewValue" ng-model="group.name" />
</div>
You can try like this
Working Demo
<div ng-app='myApp' ng-controller="ArrayController">
<select ng-model="group.name" ng-options="Group.Name for Group in Groups"></select>
<div class="col-md-4" ng-show="group.name.Value == 'new'">
<input class="text-box" type="text" name="NewValue" ng-model="newValue" />
<button ng-click="add(newValue)">Add</button>
</div>
</div>
Just watch for the selected item change:
$scope.displayDiv = false;
$scope.newval = 'newval';
$scope.$watch('group.name', function(newval, oldval) {
if (newval == $scope.newval) {
$scope.displayDiv = true;
}
}
and for the HTML :
<div class="col-md-4" ng-show="displayDiv">
Here's a working example.
First we set up our options and input.
<select ng-model="curopt"
ng-options="option.name for option in options">
</select>
<input type="text" ng-model="newopt"
ng-show="curopt.name == 'New'"
ng-keypress="newOption($event)">
The ng-show option for our input is tied to the name of the currently selected option. We also add an ng-keypress directive to allow us to handle the enter key being pressed.
Now to the controller...
$scope.newOption = function(event) {
if (event.which == 13) {
$scope.options.push({ name : $scope.newopt, value : $scope.newopt });
$scope.newopt = '';
}
}
Because our select input options is tied to the $scope.options we can simply append our text inputs value to the array and angular will handle updating for us due to data binding.