Before creating the frontend controllers to display our data, we need to create a tool to import our data feed. To create this tool, we create a class in our commands directory that extends CConsoleCommand; this will enable us to import data from the command line and automate it if we so choose.

To begin, we need to create a new class called ImportLocationsCommand inside of our commands directory at /protected that extends CConsoleCommand. The filename inside the commands directory should be ImportLocationscommand.php:

<?php
class ImportLocationsCommand extends CConsoleCommand {}

Next, we add a method to handle the retrieval of the data we want to import. To provide the greatest amount of flexibility, we create two methods: the first will fetch the data from our external data source and the second will actually import the data into our database.

In a real-world application, the first method that we build might fetch the data from a web resource via CURL. Alternatively...