What is the process for creating an Ajax button in the Yii framework?

As a newcomer to the Yii framework, I am seeking examples or tips on using JavaScript to create an ajax submit button. The main purpose of this button is to allow users to favorite the current page and send the data to the necessary endpoint. The label on the button should dynamically change based on the information retrieved from the database (e.g., showing "favorite" or "un-favorite").

Currently, my basic button functions as follows. However, I would like to enhance it by incorporating ajax functionality. If anyone is willing to guide me through this learning process, I am eager to take on the challenge.

<div>
    <?php echo CHtml::button('Favorite', array('submit'=>array('user/favoritePage', 'playerId'=>$player->id, 'pageId'=>$page->id, 'bool'=>'FALSE'))); ?>
</div>
javascriptajaxbuttonyiisubmit

Answer №1

$toggle = $model->is_favorite? "false": "true";

$actionUrl = Yii::app()->createUrl('user/favoritePage', array(
    'playerId'=>$player->id, 'pageId'=>$page->id
));


//generate input type=submit with id=favorite-button
echo CHtml::ajaxSubmitButton(
    ($model->is_favorite? 'Favorite' : 'Un-Favorite'), //button label
    $actionUrl,
    array(
        'data' => 'js:{bool: $("#favorite-button").attr("toggle")}', //retrieve current button status (favorite or not) to post as parameter
        'success'=>'js:function(data){
            //update button label and status for next time on ajax success
            data = $.parseJSON(data);
            $("#favorite-button").val(data["label"]);
            $("#favorite-button").attr("toggle", data["toggle"]);
        }'

    ),
    array(
        'id'        => 'favorite-button', // set button id
        'toggle'    => $toggle // set attribute to hold favorite status, or use hidden field instead and update selector on ajax success 
    )
);

Inside controller User:

public function actionfavoritePage(){
if( Yii::app()->request->isAjaxRequest(){ // unnecessary check if this function is meant for ajax calls only

$playerId- = $_GET['playerId']; // retrieve query string
$pageId- = $_GET['pageId']; // retrieve query string
$bool = $_POST['bool']; // get true OR false status 

//perform actions to save the status here
...


//return result as json
echo json_encode(array('label' => '[updated button label]', 'toggle'=>$bool?'false':'true'));

exit();
})


}

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