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Dynamic content
===============
Now, we'll make our new application dynamic by allowing user interaction. To do this, we'll let the user select between "download" and "upload" charts with an HTML select/option menu.
Creating the Angularized select/option menu
-------------------------------------------
Add the following just above our Google Chart placeholder in :code:`sdk/ecomp-sdk/epsdk-app-os/src/main/webapp/app/fusion/scripts/myapp/myfirstpage/template.html`:
.. code-block:: html
<select ng-model="state.direction" ng-change="getChartData(state.direction)" ng-options="direction for direction in ['download', 'upload']"></select>
The :code:`state.direction` value for the :code:`ng-model` attribute tells AngularJS that the :code:`state.direction` should hold the current value of the selected option. We saw it earlier in our controller:
.. code-block:: javascript
$scope.state = {
.
.
// Holds the selected direction from the select/options control
direction: "download"
.
.
};
How this works is simple. Using the options defined in :code:`ng-options`, AngularJS creates a select/option button. When the user selects an option, the value is stored in :code:`ng-model`. If the option changes, AngularJS calls our :code:`getChartData` function with the selected option as an argument.
Compile, install, and try it out.
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