Improve comments

models/comment.php

@@ -0,0 +1,50 @@
+<?php
+
+namespace Model;
+
+use \SimpleValidator\Validator;
+use \SimpleValidator\Validators;
+
+class Comment extends Base
+{
+    const TABLE = 'comments';
+
+    public function getAll($task_id)
+    {
+        return $this->db
+            ->table(self::TABLE)
+            ->columns(
+                self::TABLE.'.id',
+                self::TABLE.'.date',
+                self::TABLE.'.comment',
+                \Model\User::TABLE.'.username'
+            )
+            ->join(\Model\User::TABLE, 'id', 'user_id')
+            ->orderBy(self::TABLE.'.date', 'ASC')
+            ->eq(self::TABLE.'.task_id', $task_id)
+            ->findAll();
+    }
+
+    public function create(array $values)
+    {
+        $values['date'] = time();
+
+        return (bool) $this->db->table(self::TABLE)->save($values);
+    }
+
+    public function validateCreation(array $values)
+    {
+        $v = new Validator($values, array(
+            new Validators\Required('task_id', t('This value is required')),
+            new Validators\Integer('task_id', t('This value must be an integer')),
+            new Validators\Required('user_id', t('This value is required')),
+            new Validators\Integer('user_id', t('This value must be an integer')),
+            new Validators\Required('comment', t('Comment is required'))
+        ));
+
+        return array(
+            $v->execute(),
+            $v->getErrors()
+        );
+    }
+}