public function processRequest(User $user = NULL)
{
parent::displayHeader($user, 'Start Journey');
// TODO query for existing journeys
// query for distinct image attributes
$dbConnection = DbConnectionUtil::getDbConnection();
$distinctAttributeList = ImageAttribute::loadExistingValues($dbConnection);
// randomly select attributes, foreach attribute, retrieve the id of a unique image, store in sourceImageList
shuffle($distinctAttributeList);
$sourceImageIdList = array();
for ($i = 0; $i < self::NUM_START_SELECTION_COUNT && count($distinctAttributeList) > 0; $i++) {
$attribute = array_shift($distinctAttributeList);
$imageIdList = ImageAttribute::loadImageIdListByAttribute($dbConnection, $attribute);
shuffle($imageIdList);
while (count($imageIdList) > 0) {
$imageId = array_shift($imageIdList);
if (!in_array($imageId, $sourceImageIdList)) {
$sourceImageIdList[] = $imageId;
break;
}
}
}
// if the full number of starting images could not be found with distinct attributes, then randomly select more to fill in the gap
if (count($sourceImageIdList) < self::NUM_START_SELECTION_COUNT) {
$allImageIdList = ImageData::loadAllImageIdList($dbConnection);
shuffle($allImageIdList);
while (count($sourceImageIdList) < self::NUM_START_SELECTION_COUNT && count($allImageIdList) > 0) {
$imageId = array_shift($allImageIdList);
if (!in_array($imageId, $sourceImageIdList)) {
$sourceImageIdList[] = $imageId;
}
}
}
// load the randomly selected images
$sourceImageDataList = ImageData::loadImageDataListByIdSet($dbConnection, $sourceImageIdList);
shuffle($sourceImageDataList);
// reset the journey's session data
if (isset($_SESSION['JOURNEY_IMAGE_LIST'])) {
unset($_SESSION['JOURNEY_IMAGE_LIST']);
}
$_SESSION['JOURNEY_IMAGE_LIST'] = array();
if (isset($_SESSION['JOURNEY_ATTRIBUTE_MAP'])) {
unset($_SESSION['JOURNEY_ATTRIBUTE_MAP']);
}
$_SESSION['JOURNEY_ATTRIBUTE_MAP'] = array();
?>
<p class="imageGridHeader">Choose Your Journey's Starting Image</p>
<div class="centerWrapper">
<div class="imageGrid">
<?php
foreach ($sourceImageDataList as $imageData) {
$imageJourneyUrl = UrlFormatter::formatRoutingItemUrl('views/JourneyStepView', array(JourneyStepView::GET_PARAM_NEXT_IMAGE_ID => $imageData->getId()));
$imageThumbUrl = UrlFormatter::formatImageUrl($imageData->getThumbnailUri());
?>
<a href="<?php
echo $imageJourneyUrl;
?>
"> <img src="<?php
echo $imageThumbUrl;
?>
"></a>
<?php
}
?>
</div>
</div>
<?php
// TODO display a list of existing journeys
parent::displayFooter();
}
protected static function formatImageAttributeDataAutoComplete(PDO $dbConnection, $inputDOMId)
{
$existingFieldValueList = ImageAttribute::loadExistingValues($dbConnection);
self::generateAutoCompleteScript($existingFieldValueList, $inputDOMId);
}
