facut pana la video 7

knowyourfood/core/DbModel.php

@@ -0,0 +1,51 @@
+<?php
+
+namespace app\core;
+
+abstract class DbModel extends Model{
+    abstract public function tableName(): string;
+
+    abstract public function attributes(): array;
+
+    abstract public function primaryKey(): string;
+
+    public function save(){
+        $tableName = $this->tableName();
+        $attributes = $this->attributes();
+        $params = array_map(fn($attr) => ":$attr", $attributes);
+
+        $statement = self::prepare("INSERT INTO $tableName ("
+                .implode(',', $attributes)
+                .") VALUES ("
+                .implode(',', $params)
+                .")"
+            );
+
+        foreach($attributes as $attribute){
+            $statement->bindValue(":$attribute", $this->{$attribute});
+        }
+
+        $statement->execute();
+        return true;
+    }
+
+    public static function prepare($sql){
+        return Application::$app->db->pdo->prepare($sql);
+    }
+
+    public function findOne($where){
+        $tableName = static::tableName();
+        $attributes = array_keys($where);
+
+        $sql = implode("AND ", array_map(fn($attr) => "$attr = :$attr", $attributes));
+        $statement = self::prepare("SELECT * from $tableName WHERE $sql");
+
+        foreach($where as $key => $item){
+            $statement->bindValue(":$key", $item);
+        }
+
+        $statement->execute();
+
+        return $statement->fetchObject(static::class);
+    }
+}