From ecf50815f6ccc80bb9c9cc9327bbb8a6c9392a16 Mon Sep 17 00:00:00 2001
From: Stephan Miller <stephanmil@gmail.com>
Date: Mon, 9 Dec 2013 20:29:09 -0600
Subject: [PATCH] Preliminary end of chapter 4 - tags working

---
 app/controllers/PostsController.php | 24 ++---------
 app/models/Posts.php                | 62 +++++++++++++++++++++--------
 2 files changed, 50 insertions(+), 36 deletions(-)

diff --git a/app/controllers/PostsController.php b/app/controllers/PostsController.php
index bf7a532..a9bca83 100755
--- a/app/controllers/PostsController.php
+++ b/app/controllers/PostsController.php
@@ -151,16 +151,8 @@ public function createAction() {
 
         $success = $post->save();
 
-        $rawTags = explode(",",$this->request->getPost("tags", array("trim", "lower")));
-        foreach ($rawTags as $t){
-            $tag = new Tags();
-            $tag->tag = $t;
-            $tag->save();
-            $postTag = new PostTags();
-            $postTag->posts_id = $post->id;
-            $postTag->tags_id = $tag->id;
-            $postTag->save();
-        }
+        $tags = explode(",",$this->request->getPost("tags", array("trim", "lower")));
+        Posts::addTags($tags,$post->id);
 
         if (!$success) {
             foreach ($post->getMessages() as $message) {
@@ -222,16 +214,8 @@ public function saveAction() {
 
         $success = $post->save();
 
-        $rawTags = explode(",",$this->request->getPost("tags", array("trim", "lower")));
-        foreach ($rawTags as $t){
-            $tag = new Tags();
-            $tag->tag = $t;
-            $tag->save();
-            $postTag = new PostTags();
-            $postTag->posts_id = $post->id;
-            $postTag->tags_id = $tag->id;
-            $postTag->save();
-        }
+        $tags = explode(",",$this->request->getPost("tags", array("trim", "lower")));
+        Posts::addTags($tags,$post->id);
 
         if (!$success) {
 
diff --git a/app/models/Posts.php b/app/models/Posts.php
index e1ef26b..271f69c 100755
--- a/app/models/Posts.php
+++ b/app/models/Posts.php
@@ -1,72 +1,102 @@
 <?php
 
 
-class Posts extends \Phalcon\Mvc\Model
-{
+class Posts extends \Phalcon\Mvc\Model {
 
     /**
      *
      * @var integer
      */
     public $id;
-     
+
     /**
      *
      * @var integer
      */
     public $users_id;
-     
+
     /**
      *
      * @var string
      */
     public $title;
-     
+
     /**
      *
      * @var string
      */
     public $body;
-     
+
     /**
      *
      * @var string
      */
     public $excerpt;
-     
+
     /**
      *
      * @var string
      */
     public $published;
-     
+
     /**
      *
      * @var string
      */
     public $updated;
-     
+
     /**
      *
      * @var string
      */
     public $pinged;
-     
+
     /**
      *
      * @var string
      */
     public $to_ping;
-     
+
     /**
      * Initialize method for model.
      */
-    public function initialize()
-    {
-		$this->hasMany("id", "Comments", "posts_id", NULL);
-		$this->hasMany("id", "PostTags", "posts_id", NULL);
-		$this->belongsTo("users_id", "Users", "id", array("foreignKey"=>true));
+    public function initialize() {
+        $this->hasMany("id", "Comments", "posts_id", NULL);
+        $this->hasMany("id", "PostTags", "posts_id", NULL);
+        $this->belongsTo("users_id", "Users", "id", array("foreignKey" => true));
+
+    }
 
+    /**
+     * Adds tags to a post
+     */
+    static function addTags($tags, $post_id) {
+        foreach ($tags as $t) {
+            $t = trim($t);
+            $tag = Tags::findFirst(array("tag = '$t'"));
+            if (!$tag) {
+                $tag = new Tags();
+                $tag->tag = $t;
+                $tag->save();
+            }
+            $postTag = PostTags::findFirst(
+                array(
+                    "conditions" => "posts_id = ?1 AND tags_id = ?2",
+                    "bind" => array(
+                        1 => $post_id,
+                        2 => $tag->id
+                    )
+                )
+            );
+            if (!$postTag) {
+                $postTag = new PostTags();
+                $postTag->posts_id = $post_id;
+                $postTag->tags_id = $tag->id;
+                $postTag->save();
+            }
+            unset($tag);
+            unset($postTag);
+        }
     }
 
 }