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POWhat is the Yii way to CModel lists (of other CModel lists or not)?
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copied!<p>I have been playing with Yii for a couple of months now, and to structure the code the Yii way, I was wondering how to best have models being lists of other models.</p> <p>Yii seems to have models very close to DAO conceptually while the MVC design pushes not to put non-DAO models anywhere else than with models. (I am no MVC expert)</p> <p><strong>2 reasons, lists are good:</strong></p> <ul> <li>I am looking for something like <strong>CModelList</strong> to extend when having objects with a fair amount of logic which cannot be tackled with <em>relations</em> (which is a CActiveRecord element anyway) </li> <li>Lists as a type can apply logic to elements while not having to load them all in memory at once and still offer a single type to play with across the code with <strong>ids and load only subset</strong></li> </ul> <p><strong>What does not seem to solve the problem</strong></p> <ul> <li><a href="http://www.yiiframework.com/doc/guide/1.1/en/database.arr" rel="nofollow">Relational Active Record</a>: because not all models are active records</li> <li><a href="http://www.yiiframework.com/doc/api/1.1/CAttributeCollection" rel="nofollow">CAttributeCollection</a>: because it only supports all objects in memory like arrays</li> <li>Same methods within different models such as getRestaurantsAverageRatingByPriceRange: because that is functional programming within OOP growing rapidly as Models have more methods</li> </ul> <p><strong>Example 1</strong></p> <pre><code>$user = User::model()->findByPk($userID); // get a user $restaurantList = $user->getRestaurants(); // get restaurants for that user for($i=0;$i<5;$i++) { $this->renderPartial( "rating", array("rating" => $restaurantList->getAverageRatingByPriceRange( $i ) ); } </code></pre> <p><strong>Example 2</strong> (same list logic, different base model)</p> <pre><code>$city = City::model()->findByPk($cityID); // get a city $restaurantList = $city->getRestaurants(); // get restaurants for that city for($i=0;$i<5;$i++) { $this->renderPartial( "rating", array("rating" => $restaurantList->getAverageRatingByPriceRange( $i ) ); } </code></pre> <p><strong>Example 3</strong> (same list type and base model, different logic ) </p> <pre><code>$user = User::model()->findByPk($userID); // get a user $restaurantList = $user->getRestaurants(); // get restaurants for that user $this->renderPartial( "map", array("coord" => $restaurantList->getCoordinatesMap() ); </code></pre> <p>So is it missing in Yii, should I start thinking differently or what is the mechanism to use and keep clean code and structure?</p>

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