first commit

app/Model/postModel.php

@@ -0,0 +1,49 @@
+<?php
+namespace Blog\Model;
+
+use Blog\Entity\post;
+use Blog\Database\database;
+use Exception;
+
+class PostModel {
+  private $db;
+
+  public function __construct() {
+    $this->db = Database::getConnection();
+  }
+
+  public function getPosts(): array {
+    $posts = [];
+    $query = $this->db->query(<<<SQL
+      SELECT p.id, u.username, p.title, p.content, p.stamp
+      FROM posts p
+      JOIN users u ON u.id = p.author_id
+    SQL);
+
+    if(!$query->rowCount())
+      throw new Exception("no entries available");
+
+    while($row = $query->fetchObject()) {
+      $posts[] = new Post($row->id, $row->title, $row->content, $row->username, $row->stamp);
+    }
+    return $posts;
+  }
+
+  public function getPost($id): ?Post {
+    $query = $this->db->prepare(<<<SQL
+      SELECT p.id, u.username, p.title, p.content, p.stamp
+      FROM posts p
+      JOIN users u ON u.id = p.author_id
+      WHERE p.id = :id
+      LIMIT 1
+    SQL);
+    $query->bindParam(":id", $id, $this->db::PARAM_INT);
+    $query->execute();
+
+    if(!$query->rowCount())
+      throw new Exception("no entry found");
+
+    $row = $query->fetchObject();
+    return new Post($row->id, $row->title, $row->content, $row->username, $row->stamp);
+  }
+}