angular ui-bootstrap typeahead callback on selectMatch?

Question

I'm using the angular ui-bootstrap typeahead and I would want to use it as a way to pick up many choices, so I'd need to get the selected value when selectMatch method is launched but I can't find how to do that in my controller

<div class='container-fluid' ng-controller="TypeaheadCtrl">
<pre>Model: {{selected| json}}</pre>
<input type="text" ng-model="selected" typeahead="state for state in states | filter:$viewValue">

If I watch the selected value, I got the change every time a key is pressed...

scope.$watch('selected', function(newValue, oldValue) {... });

I got that the method selectMatch is the one which is called when the user press enter or click on the list but I don't know how to have a callback on that...

Thanks !

Corrinnecorrival

Answer 1

There is better way of doing this now. A new callback method has been added

In controller file add the following:

 $scope.onSelect = function ($item, $model, $label) {
    $scope.$item = $item;
    $scope.$model = $model;
    $scope.$label = $label;
};

In view add the following:

 <input type="text"
        ng-model="selected"
        typeahead="state for state in states | filter:$viewValue"
        typeahead-editable="false"
        typeahead-on-select="onSelect($item, $model, $label)"/>

See the typeahead spec for more information (search for onSelect).

Check out if the following URLs helps http://www.techguides.in/how-to-create-autocomplete-using-angularjs-ui/

http://www.techguides.in/how-to-customize-autocomplete-to-display-multiple-columns-using-angularjs-ui-2/

Doublequick

Thanks! Worked like a charm. This should probably be officially documented at the reference page under the Typeahead heading: angular-ui.github.io/bootstrap – Drowsy

Does anybody have an idea what the $item $model $label objects actually are in that callback typeahead-on-select='onSelect($item, $model, $label)'? – Scone

@Matt, is there anyway we can do postback in using $http with onSelect event? – Discernible

@Scone $item $model $label these three properties are as below respectively. If you are binding JSON array of objects having more than one property, then you will get selected item in $item with all the properties. $model is inbuilt angular model used which will store selected item.value and $lable will give you the value displayed in the text box after selection. So in short many a time, $label will be equal to $model. Hope this clarifies your doubt. – Discernible

Thanks @Doublequick -- I tried to use this answer couldn't get the onSelect callback to work. Here is the question in case you happen to know the answer. – Simba

removed the earlier comments as the links were not working Can you please check these link if it helps techguides.in/how-to-create-autocomplete-using-angularjs-ui and techguides.in/… – Doublequick

@Scone It is easier to explain if the expression is like: state.id as state.name for state in states. In that case $item is state, $model is state.id, and $label is state.name – Plunge

Answer 2

Edit: this method is not the best one now. It's better to use onSelect callback like explained in the answer above this one.

I found how how do to do what I wanted. I did see that there is a typeahead-editable attribute and if it's set to false then the selected value change only when a value from the model is selected. And so the $watch is working fine to check when a new value is selected.

<input type="text" ng-model="selected" typeahead="state for state in states | filter:$viewValue" typeahead-editable="false">

link: function(scope, elm, attrs){
    scope.$watch('selected', function(newValue, oldValue) {
        if (newValue)
          console.log(oldValue+"->"+newValue);
     });
}

Corrinnecorrival

Answer 3

Following should be your HTML

 <input id="title" type="text"  ng-model="title"  typeahead="data.enquiry_title for data in titleData | filter:$viewValue | limitTo:8" 
typeahead-on-select='onSelect($item, $model, $label)' />

just add typeahead-on-select in input tag with the callback function.

Following would go inside controller

$scope.onSelect = function ($item, $model, $label) {
            console.log($item);
            if($item.tid)
                $scope.activeTitleId = $item.tid
        };

inside $item you'll get the whole object which you have passed in the main array of suggestion list

Nutty

Answer 4

try the following before validation

 modelCtrl.$setValidity('editable', true);

Cupcake