我正在使用Yii2，我想使用Pjax小部件在帖子上创建评论功能。 注释窗口显示帖子的所有现有注释，这些注释向属于连接用户的那些添加编辑按钮以允许更改。 在此评论列表下，有一个表单，包括textarea和提交按钮，以允许创建评论。 每次用户单击已存在的注释的编辑按钮时，都会显示一个表单以允许更新。
这一切实际上如何运行以及我遇到的麻烦：
我可以无限次更新现有评论，这就是我想要的。
如果在刷新视图帖子页面后，我输入一个新评论 正确提交。但我无法进入另一个，我希望能够发布多个。第二次，POST似乎包含评论的内容但没有 关于提交按钮。因此，我无法识别哪个按钮 被点击了。
我改变后发生同样的事情 现有评论，即我无法为此创建新评论 原因 - 没有关于POST中的提交按钮。
我的问题
如果提交按钮是第一个使用的，它是如何在POST中传输的，这是第一次在刷新页面后使用它？
以下是相关的代码部分
1 - 控制器
/**
* display a post
*@param integer $id
*
* return a view
*/
public function actionView ($id){
$post = $this->findModel($id);
$comment=$this->manageComment($post);
return $this->render('view', [
'post_model' => $post,
'comment_model' => $comment,
]);
}
/*
* deals with the post according to the submit value
* if submitted and return the comment under treatment
* otherwise – not submitted – return a new comment
*
*@param $post the post that holds the comments
*
* return a Comment model
*/
protected function manageComment($post)
{
$comment=new Comment;
if(isset($_POST['Comment']) )
{
switch ($_POST['Submit']) {
case 'create':
$comment->attributes=$_POST['Comment'];
if($post->addComment($comment,false))
{
//la création a réussi
if($comment->status==Comment::STATUS_PENDING)
Yii::$app->session->setFlash('success',
Yii::t('app','Thank you for your comment.
Your comment will be visible once it is approved.'));
//on renouvelle le commentaire pour éviter d'avoir
//un bouton update (mise à jour)
return new Comment;
}
break;
case 'update':
$comment=Comment:: find()
->where(['id' => $_POST['Comment']['id']])
->one();
if($comment->attributes=$_POST['Comment']){
if($post->addComment($comment,true))
{
//update successful
if($comment->status==Comment::STATUS_PENDING)
{Yii::$app->session->setFlash('success',
Yii::t('app','Thank you for your comment.
Your comment will be visible once it is approved.'));}
$comment= new Comment;
return $comment;
} else {
//la mise à jour a échoué
$comment= new Comment;
return $comment;
}
}else{echo'load failed'; exit();}
break;
case 'edit':
// echo $_POST['Comment']['id']; exit();
$comment->id = $_POST['Comment']['id'];
return $comment;
break;
default:
}
}
//creation successful
return $comment;
}
2-In Post view
<!--comment_model is passed by PostController-->
<?= $this->render('@app/views/comment/_create-form',
['model' => $comment_model, 'post' => $post_model]); ?>
3 - _create-form视图
<div class="comment-form">
<?php Pjax::begin([ ]);?>
<!-- this bloc must be part of the Pjax in order for the new
comment to appear immediately -->
<div class="comment">
<h4 ><?= Yii::t('app','Comments by users')?></h4>
<div class="comments">
<?php $comments= Comment::find()
->where (['post_id' => $post->id ])
->andWhere(['status' => true])
->all();
foreach($comments as $com){
$identity= User::findIdentity($com->user_id);
$firstname=$identity->firstname;
familyname=$identity->familyname;
$date= Utils::formatTimestamp($com->created_at);
$txt1 = Yii::t('app','Posted by ');
$txt2 = Yii::t('app',' on ');
$text_header =$txt1. $firstname.' '.$familyname.$txt2.$date;
//here we check that $model->id is defined an equal to $com->id
//to include edition form
if (isset($model->id) && ($model->id == $com->id) )//
{
// echo Yii::$app->user->identity->id. ' '.$com->user_id; exit();
echo $this->render(
'_one-comment',(['com' => $com,
'text_header' => $text_header,
'submit_btn' => false,
'with_edit_form' => true]));
} else
{
$submit_btn=false;
if (Yii::$app->user->identity->id == $com->user_id) $submit_btn=true; else $submit_btn=false;
echo $this->render('_one-comment',(['com' => $com, 'text_header' => $text_header, 'submit_btn' => $submit_btn,'with_edit_form' => false]));
}
}?>
</div>
<!--this div should be between Pjax::begin and Pjax::end otheswise it is not refreshed-->
<div id="system-messages" >
<?php foreach (Yii::$app->session->getAllFlashes() as $type => $message): ?>
<?php if (in_array($type, ['failure','success', 'danger', 'warning', 'info'])): ?>
<?= Alert::widget([
'options' => ['class' => ' alert-dismissible alert-'.$type],
'body' => $message
]) ?>
<?php endif ?>
<?php endforeach ?>
</div>
<?php
$form = ActiveForm::begin([
'options' => ['data' => ['pjax' => true]],//'id' => 'content-form'
// more ActiveForm options
]); ?>
<?= $form->field($model, 'content')
->label('Postez un nouveau commentaire')
->textarea(['rows' => 6]) ?>
<?= Html::submitButton('Create comment',
['content' => 'edit','name' =>'Submit','value' => 'create']) ?>
<?php
ActiveForm::end();?>
</div>
<?php Pjax::end()
?>
</div>
4 - _one-comment视图
<div class="one-comment">
<div class="comment-header">
<?php echo $text_header;?>
</div>
<div class="comment-text">
<?php echo $com->content;?>
</div>
<div class="comment-submit">
<?php
if ($with_edit_form)
{
// echo "with edit ".$com->id; exit();
echo $this->render('_update-one-comment',(['com' =>$com]));
} else
{
if($submit_btn){
$form = ActiveForm::begin([
'options' => [ 'data' => ['pjax' => true]],//'name' => 'one','id' => 'com-form-'.$com->id,
// more ActiveForm options
]); ?>
<?= $form->field($com, 'id')->hiddenInput()->label(false);?>
<div class="form-group">
<?= Html::submitButton('', [
'class' => 'glyphicon glyphicon-pencil sub-btn',
'content' => 'edit',
'name' =>'Submit','value' => 'edit']) ?>
</div>
<?php
ActiveForm::end();
}
}?>
</div>
</div>
5 _update-one-comment表格
//echo 'dans update-one-comment';print_r($com->toArray()); exit();
$form = ActiveForm::begin([
'options' => [ 'data' => ['pjax' => true]],//'name' => 'edit-one','id' => 'edit-com-form-'.$com->id,
// more ActiveForm options
]); ?>
<?= $form->field($com, 'id')->hiddenInput()->label(false);?>
<?= $form->field($com, 'created_at')->hiddenInput()->label(false);?>
<?= $form->field($com, 'updated_at')->hiddenInput()->label(false);?>
<?= $form->field($com, 'content')
->label('Mise à jour commentaire')
->textarea(['rows' => 6]) ?>
<div class="form-group">
<?= Html::submitButton($com->isNewRecord ?
Yii::t('app', 'Create comment') :
Yii::t('app', 'Update comment'), ['class' => $com->isNewRecord ?
'btn btn-success' :
'btn btn-primary','name' =>'Submit','value' => 'update']) ?>
</div>
<?php
ActiveForm::end();
?>
6- Post模型的addComment（）
public function addComment($comment, $up=false)
{
if(Yii::$app->params['commentNeedApproval'])
{$comment->status=Comment::STATUS_PENDING;}
else {$comment->status=Comment::STATUS_APPROVED;}
$comment->post_id=$this->id;
$comment->user_id=Yii::$app->user->identity->id;
if($up){
$test=$comment->update();
if($test) {//($comment->save(false)){
Yii::$app->session->setFlash('success',Yii::t(
'app','The comment has been succesfully updated.'));
return true;
}
Yii::$app->session->setFlash('failure',Yii::t(
'app','The comment could not be updatded.'));
} else
{ //création
if($comment->save()){
Yii::$app->session->setFlash('success',
Yii::t('app','The comment has been succesfully recorded.'));
return true;
}
Yii::$app->session->setFlash('failure',
Yii::t('app',$up.false.'The comment could not be recorded.'));
}
return false;
}
答案 0 :(得分：0)
为什么要依靠提交按钮名称/值来确定您需要做什么？
$ _ POST [＆＃39;评论＆＃39;] [＆＃39; id＆＃39;]是一个更好的指标，表明需要做什么。如果有更新，否则创建。
同时确保模型不允许编辑其他人发布的评论。
模型不应设置闪存消息，这是控制器的作业。
＆＃34;我可以无限次更新现有评论。＆＃34;当然你可以，从你告诉我们的内容中没有什么可以说你不应该这样做。你不是要检查以防止这种情况。
答案 1 :(得分：0)
由于提交按钮的值并不总是在帖子中传输（它适用于Chromium但不适用于Firefox），我解决了我的问题，在表单中添加隐藏字段并使用它代替提交按钮＆＃ 39; s值。