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POCould someone give a perfect example of a basic "user" object system, using PDO?
 

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  1. POCould someone give a perfect example of a basic "user" object system, using PDO?
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    <p>What I'd like is to see the ideal framework for a system which has a group of objects (ie User) whereby the data is contained in a database. I've been advised to have a User class and a UserMapper class and this is my understanding of how it should look:</p> <p><strong>user.class.php</strong> <pre><code>/* The class for constructing any user's information */ class User { protected $userId, $email, $userGroup; protected function getEmail() { return $this-&gt;email; } protected function getUserId() { return $this-&gt;userId; } public function __construct($userId, $email, $userGroup) { $this-&gt;userId = $userId; $this-&gt;email = $email; $this-&gt;userGroup = $userGroup; } } class UserMapper { // database connection private $db; public function __construct($db) { $this-&gt;db = $db; } public function findByUserId ($userId) { $userObject = new User(); $q = $this-&gt;db-&gt;prepare("SELECT userId, email, userGroup FROM user WHERE userId = :userId"); $q-&gt;bindValue(":userId", $id); $q-&gt;setFetchMode( PDO::FETCH_INTO, $userObject); $q-&gt;execute(); $q-&gt;fetch(PDO::FETCH_INTO); return $userObject; } } ?&gt; </code></pre> <p><strong>main.php</strong></p> <pre><code>&lt;?php include user.class.php; $dbh = new PDO('mysql:host=localhost;dbname=test', $user, $pass, array(PDO::ATTR_PERSISTENT =&gt; true)); $getUser = new UserMapper($dbh); $user = $getUser-&gt;findByUserId(41); echo $user-&gt;getEmail(); ?&gt; </code></pre> <p>But this seems a bit messy in terms of the main.php side. Can I not make one PDO object and have that defined in all of my scripts? As well as a UserMapper object? Or do every time I want to get a user from the database do I need to make a NEW userMapper object, then do findByUserId (as above). Or is there a simpler way to doing this? </p> <p>If I wanted to call a UserGroup object within the class User, how would I do this? (This would also need to connect to the database through PDO). To do the following seems messy:</p> <pre><code>&lt;?php $dbh = new PDO('mysql:host=localhost;dbname=test', $user, $pass, array(PDO::ATTR_PERSISTENT =&gt; true)); $getUserGroup = new UserGroupMapper($dbh); $userGroup = $getUserGroupMapper-&gt;findByUserId($this-&gt;userGroup); ?&gt; </code></pre>
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    1. COGreat question tom! You are essentially trying to build your own ORM. I'd suggest checking out this question: http://stackoverflow.com/questions/1664932/features-needed-when-building-a-orm-with-php/1664939#1664939 and some good discussion on Reddit on the topic: http://www.reddit.com/r/PHP/comments/164r3w/to_orm_or_not_to_orm/
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      1. POCould someone give a perfect example of a basic "user" object system, using PDO?
      1. USChris Rasco
    2. COWhy don't you declare one from each at top of your `main.php` and then use them to the rest of your script?
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    3. CONobody's perfect ;)
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      1. USDropout
 

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