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POYii - Retrieve Model Relation Current ID from Controller / Model
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copied!<p>In Yii I have a view that displays a question, that questions associated answers, and each answers associated comments.</p> <p>My question is: how do you retrieve a model's relation's current id from a controller/model without navigating to a view specific to that relation?</p> <p>More details:</p> <p>The relation's foreach loops are each setup and the data is being displayed correctly without a problem.</p> <p>There is one view with many nested 'renderPartial' views but the one question and all associated answers/comments are all displayed on the same page.</p> <p>Each answer has a database field question_id that is the FK to the question's PK. The code I am using to set the correct model object to be saved and the correct current question_id is: Function in QuestionController.php:</p> <pre><code>/** * creates answer model and if answer is being submitted via post, saves the answer data * @protected * @return object answer object being saved */ protected function createAnswer($question) { $answer = new Answer(); if(isset($_POST['Answer'])) { $answer->attributes = $_POST['Answer']; if($question->addAnswer($answer)) { Yii::app()->user->setFlash('answerSubmitted', "Thank you for your answer!"); $this->refresh(); } } return $answer; } </code></pre> <p>This function is called in QuestionController.ActionView:</p> <pre><code> /** * Displays a particular model. */ public function actionView() { //load question model $question = $this->loadModel(); //load associated answers for question $answer = $this->createAnswer($question); //load associated comments for answers $comments = $this->createComment($question->answer); $this->render('view',array( 'model'=>$question, 'answer'=>$answer, 'comments'=>$comments, )); } </code></pre> <p>This works great, and the createAnswer function calls the following function in the Question.php model:</p> <pre><code> /** * Adds an answer to this question * @param model answer the answer model * @return model saved answer with the current question's id */ public function addAnswer($answer) { $answer->question_id = $this->id; $answer->status = param('answerStatus'); return $answer->save(); } </code></pre> <p>The code above sets the current question's id and it works great.</p> <p>The problem I have is setting the correct answer_id for the comment's answer. I am trying to use the following code in the QuestionController:</p> <pre><code> /** * @protected * @return object comment object being saved * Saves comment for this particular answer */ protected function createComment($answer) { $comment = new AnswerComment; if(isset($_POST['AnswerComment'])) { $comment->attributes = $_POST['AnswerComment']; if($answer->addComment($comment)) { //Yii::app()->user->setFlash('commentSubmitted', $answer->answer->id . 't'); Yii::app()->user->setFlash('commentSubmitted', "Your comment has been added."); $this->refresh(); } } return $comment; } </code></pre> <p>and calling the function in the Answer model:</p> <pre><code> /** * Adds a comment to this answer * @param model answer the answer model * @return model saved answer with the current question's id */ public function addComment($comment) { $comment->answer_id =$this->id; $comment->status = param('answerCommentStatus'); return $comment->save(); } </code></pre> <p>This however does not work. The <code>$this->id</code> is evidently not set. I believe this is possibly because it is a relation of the main model and not the main model itself. How can I retrieve the current answer's id without going to a view specific to that answer i.e. /answer/view/1 ,etc.</p> <p>(as an example think of how StackOverflow allows you to comment on different answers without leaving the question's page)</p> <p>Thank you!</p>

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