diff options
| author | xue <> | 2007-06-26 15:59:16 +0000 |
|---|---|---|
| committer | xue <> | 2007-06-26 15:59:16 +0000 |
| commit | f92ca63a225d43e7ecca4ebe528c2a1e206a40f1 (patch) | |
| tree | 0fb92aafab5fedc866c6cafd49433d72bf719114 /demos/blog-tutorial/samples/day4/blog/protected/pages/posts/ListPost.php | |
| parent | c31e5ab3ebd4ae1561cbdaeaa504d1095dcbbb0a (diff) | |
Completed day 4 for blog tutorial.
Diffstat (limited to 'demos/blog-tutorial/samples/day4/blog/protected/pages/posts/ListPost.php')
| -rw-r--r-- | demos/blog-tutorial/samples/day4/blog/protected/pages/posts/ListPost.php | 64 |
1 files changed, 64 insertions, 0 deletions
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);
+ }
+}
+
+?>
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