Default Selection Issue with Radio Buttons in AngularJS

I am currently encountering an issue with the code snippet included in my directive template

'<li ng-repeat="f in foos">' +
'<input type="radio" ng-change="foo(f.key)" ng-model="selectedFoo" name="foos" id="{{f.key}}" value="{{f.key}}">{{f.value}}</input>' +
'</li>' +

Within my link method, I have defined the following:

scope.foos = [
                    { key: 'a', value: 'A', checked: true, symbol: 'a' },
                    { key: 'b', value: 'B', symbol: 'b' },
                    { key: 'c', value: 'C', symbol: 'c' }
                ];
scope.selectedFoo = "a";

I have implemented a method called foo that performs the following action

scope.foo = function(selectedValue) {
                    scope.selectedMatchType = selectedValue;
                };

I am encountering two main issues:

  1. The first element in the dropdown is not automatically set as expected when the radio buttons are loaded, even though the ng-model is bound to selectedFoo.
  2. The foo method is only invoked once for each element in the list. For example, clicking on A triggers foo, then clicking on B also triggers foo, however, returning back to click on A does not trigger foo again unless another element like C is clicked on.

I am seeking assistance in identifying and resolving these problems. Any insights or suggestions would be greatly appreciated.

Answer №1

It is important to keep in mind that when using ng-repeat, it creates its own scope for every template. This means that you will need to use $parent in ng-model for the input field.

ng-model="$parent.selectedFoo"

For a working example with your code, check out this fiddle: http://jsfiddle.net/hpeinar/5gj9y6k4/

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