From f92ca63a225d43e7ecca4ebe528c2a1e206a40f1 Mon Sep 17 00:00:00 2001
From: xue <>
Date: Tue, 26 Jun 2007 15:59:16 +0000
Subject: Completed day 4 for blog tutorial.

---
 .../day4/blog/protected/pages/posts/ListPost.php   | 64 ++++++++++++++++++++++
 1 file changed, 64 insertions(+)
 create mode 100644 demos/blog-tutorial/samples/day4/blog/protected/pages/posts/ListPost.php

(limited to 'demos/blog-tutorial/samples/day4/blog/protected/pages/posts/ListPost.php')

diff --git a/demos/blog-tutorial/samples/day4/blog/protected/pages/posts/ListPost.php b/demos/blog-tutorial/samples/day4/blog/protected/pages/posts/ListPost.php
new file mode 100644
index 00000000..7402dace
--- /dev/null
+++ b/demos/blog-tutorial/samples/day4/blog/protected/pages/posts/ListPost.php
@@ -0,0 +1,64 @@
+<?php
+
+class ListPost extends TPage
+{
+	/**
+	 * Initializes the repeater.
+	 * This method is invoked by the framework when initializing the page
+	 * @param mixed event parameter
+	 */
+	public function onInit($param)
+	{
+		parent::onInit($param);
+		if(!$this->IsPostBack)  // if the page is requested the first time
+		{
+			// get the total number of posts available
+			$this->Repeater->VirtualItemCount=PostRecord::finder()->count();
+			// populates post data into the repeater
+			$this->populateData();
+		}
+	}
+
+	/**
+	 * Event handler to the OnPageIndexChanged event of the pager.
+	 * This method is invoked when the user clicks on a page button
+	 * and thus changes the page of posts to display.
+	 */
+	public function pageChanged($sender,$param)
+	{
+		// change the current page index to the new one
+		$this->Repeater->CurrentPageIndex=$param->NewPageIndex;
+		// re-populate data into the repeater
+		$this->populateData();
+	}
+
+	/**
+	 * Determines which page of posts to be displayed and
+	 * populates the repeater with the fetched data.
+	 */
+	protected function populateData()
+	{
+		$offset=$this->Repeater->CurrentPageIndex*$this->Repeater->PageSize;
+		$limit=$this->Repeater->PageSize;
+		if($offset+$limit>$this->Repeater->VirtualItemCount)
+			$limit=$this->Repeater->VirtualItemCount-$offset;
+		$this->Repeater->DataSource=$this->getPosts($offset,$limit);
+		$this->Repeater->dataBind();
+	}
+
+	/**
+	 * Fetches posts from database with offset and limit.
+	 */
+	protected function getPosts($offset, $limit)
+	{
+		// Construts a query criteria
+		$criteria=new TActiveRecordCriteria;
+		$criteria->OrdersBy['create_time']='desc';
+		$criteria->Limit=$limit;
+		$criteria->Offset=$offset;
+		// query for the posts with the above criteria and with author information
+		return PostRecord::finder()->withAuthor()->findAll($criteria);
+	}
+}
+
+?>
\ No newline at end of file
-- 
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