Hi to everyone here in the forum,
I have some problems, querying data from a many_many relation.
What I want to do:
I have a startpage where I want to filter galleries via keywords.
Every gallery can have multiple keywords and every keyword can be linked on multiple galleries.
Now on the startpage I want to create a navigation with the keywords, e.g.:
Show all
People
Animals
Cars
in the content area there should be a thumbnail and title from all the galleries related to the keyword. Default state should bring up all galleries without filtering.
This is my code so far:
1. Single GalleryPage (FilterGalleryPage.php):
<?php
class FilterGalleryPage extends Page {
public static $many_many = array(
'Filters' => 'Filter'
);
public static $has_many = array(
'GalleryImages' => 'GalleryImage'
);
public static $has_one = array(
'GalleryThumb' => 'Image'
);
public function getCMSFields() {
$fields = parent::getCMSFields();
// Filter
$gridFieldConfig1 = GridFieldConfig_RelationEditor::create()->addComponents(new GridFieldDeleteAction('unlinkrelation'));
$gridfield1 = new GridField("Filters", "Filter", $this->Filters(), $gridFieldConfig1);
$fields->addFieldToTab('Root.Filters', $gridfield1);
// GalleryImage
$gridFieldConfig2 = GridFieldConfig_RecordEditor::create();
$gridFieldConfig2->addComponent(new GridFieldBulkEditingTools());
$gridFieldConfig2->addComponent(new GridFieldBulkImageUpload());
$gridFieldConfig2->addComponent(new GridFieldSortableRows('SortOrder'));
$gridfield2 = new GridField("GalleryImages", "Gallery Images", $this->GalleryImages()->sort("SortOrder"), $gridFieldConfig2);
$fields->addFieldToTab('Root.GalleryImages', $gridfield2);
// GalleryThumb
$fields->addFieldToTab(
'Root.Main',
$uploadField = new UploadField(
$name = 'GalleryThumb',
$title = 'Galerie Thumb'
)
);
return $fields;
}
}
class FilterGalleryPage_Controller extends Page_Controller {
public static $allowed_actions = array (
);
public function GetGalleryImages() {
return $this->GalleryImages()->sort("SortOrder");
}
public function init() {
parent::init();
}
}
2. Filter.php
<?php
class Filter extends DataObject {
public static $db = array(
'Title' => 'Varchar'
);
public static $belongs_many_many = array(
'FilterGalleryPage' => 'FilterGalleryPage'
);
// Summary fields
public static $summary_fields = array(
'ID' => 'ID',
'Title' => 'Title'
);
public function getCMSFields() {
$fields = parent::getCMSFields();
$gridFieldConfig = GridFieldConfig_RelationEditor::create()->addComponents(
new GridFieldDeleteAction('unlinkrelation')
);
$gridFieldConfig->removeComponentsByType('GridFieldAddNewButton');
$gridfield = new GridField("FilterGalleryPage", "FilterGalleryPage", $this->FilterGalleryPage(), $gridFieldConfig);
$fields->addFieldToTab('Root.FilterGalleryPage', $gridfield);
return $fields;
}
}
3. Startpage (Page.php):
<?php
class Page extends SiteTree {
public static $db = array(
);
public static $has_one = array(
);
}
class Page_Controller extends ContentController {
/**
* An array of actions that can be accessed via a request. Each array element should be an action name, and the
* permissions or conditions required to allow the user to access it.
*
* <code>
* array (
* 'action', // anyone can access this action
* 'action' => true, // same as above
* 'action' => 'ADMIN', // you must have ADMIN permissions to access this action
* 'action' => '->checkAction' // you can only access this action if $this->checkAction() returns true
* );
* </code>
*
* @var array
*/
public static $allowed_actions = array (
);
function getFilterwords(){
$sqlQuery = new SQLQuery();
$sqlQuery->setFrom('Filter');
$result = $sqlQuery->execute();
$returnedRecords = new ArrayList();
foreach($result as $row) {
$returnedRecords->push(new ArrayData($row));
}
return $returnedRecords;
}
function getFiltergals(){
$curFilterID = 0;
// Show filtered galleries
if ( isset($_GET['filter']) ) {
$curFilterID = $_GET['filter'];
$sqlQuery = new SQLQuery();
$sqlQuery->setFrom('filtergallerypage_filters');
$sqlQuery->addWhere('FilterID = '.$curFilterID);
$sqlQuery->addLeftJoin('SiteTree', 'SiteTree.ID = filtergallerypage_filters.FilterGalleryPageID');
$result = $sqlQuery->execute();
$returnedRecords = new ArrayList();
foreach($result as $row) {
$returnedRecords->push(new ArrayData($row));
}
return $returnedRecords;
}
// Show all galleries
else {
$returnedRecords = DataObject::get('FilterGalleryPage','', 'Title ASC');
return $returnedRecords;
}
}
public function init() {
parent::init();
// Note: you should use SS template require tags inside your templates
// instead of putting Requirements calls here. However these are
// included so that our older themes still work
Requirements::themedCSS('reset');
Requirements::themedCSS('layout');
Requirements::themedCSS('typography');
Requirements::themedCSS('form');
}
}
My first problem is, that I use two different queries to get the filtered view and the view for all galleries. It would be better for me to use one.
The second problem is that I cannot retrieve the GalleryThumb Images.
Can someone help me out. That will save me some more days of errors....
Thanks in advance and best regards
Boo
