我处于CakePHP 3环境中，在该环境中，我处于Articles Controller中的Edit Action上。
控制器上的第一个功能是标准编辑功能。这将以表格的形式加载文章的现有数据，因此您可以轻松地对其进行编辑。
public function edit($id){
$article_categories = $this->Articles->Articlecats->find('list');
$this->set('article_categories', $article_categories);
$article = $this->Articles->get($id);
// if you are not just landing on page but making the save
if ($this->request->is(['post', 'put'])) {
// disable entity creation, not entirely sure what this does..
$this->Articles->patchEntity($article, $this->request->getData());
// Set the user_id from the session.
$article->user_id = $this->Auth->user('id');
if ($this->Articles->save($article)) {
$this->Flash->success(__('Your article has been updated.'));
return $this->redirect(['action' => 'index']);
}
// check if there are errors in editing and print them
if ($article->getErrors()){
// Entity failed validation
// print_r($article->getErrors());
$this->Flash->error(__('Please correct values and try again.'));
}
$this->Flash->error(__('Unable to update your article.'));
}
$this->set('article_pass', $article);
}
ArticlesController的edit方法中的视图显示输入字段，您可以在其中输入Article信息，然后将其保存到基础数据库。在视图的底部，有一个“编辑类别”按钮，可通过Ajax调用访问ArticlesController上的方法。 ArticlesController上的函数editcategory（）检索有关所选类别的信息，然后将其返回到视图。
单击此按钮后，我想将类别信息加载到表单中并显示该表单。我被困在如何将检索到的类别信息加载到表单中。
<?php echo $this->Html->script('http://code.jquery.com/jquery.min.js'); ?>
<!-- File: templates/Articles/edit.php -->
<h1>Edit Article</h1>
<?php
echo $this->Form->create($article_pass);
echo $this->Form->control('user_id', ['type' => 'hidden']);
echo $this->Form->control('title');
echo $this->Form->control('body', ['rows' => '3']);
echo $this->Form->select('articlecat_id', $article_categories, ['id' => 'article_cat']);
echo $this->Form->button(__('Save Article'));
echo $this->Form->end();
$csrfToken = $this->request->getParam('_csrfToken');
echo $this->articlecatCreate->create();
// use this form to edit the article category
// question is how I can use retrieved data from ajax call to populate this form again..
echo $this->Form->create("", ['id' => 'article_cat_create']);
echo $this->Form->control('title');
echo $this->Form->button(__('Save ArticleCat'));
echo $this->Form->end();
?>
<button id="edit_category">edit Category</button>
<script>
var csrf_token = <?php echo json_encode($csrfToken) ?>;
$(window).load(function() {
// get article category data from controller method through ajax call
// populate the form with them
$('#edit_category').click(function(){
var targeturl = "http://wampprojects/composer_cakephptut/articles/editcategory";
var category_selected = $('#article_cat').children("option:selected").val();
console.log(category_selected);
// need to check if this statement works??
if ($('#article_cat').children("option:selected").val()){
$.ajax({
type: 'post',
url: targeturl,
headers: {'X-CSRF-Token': csrf_token},
data: {category: category_selected},
success: function(result){
console.log(result);
// POPULATE AN EXISTING FORM WITH NEW DATA AND TOGGLE DISPLAY VALUE!
var article = JSON.parse(result);
// can you, with this result, populate existing form??
// id = "article_cat_create"
// which value do you need to set in formhelper??
$('#article_cat_create').css("display", "block");
}
});
}else{
console.log("no cat selected");
}
});
});
</script>
<style>
#article_cat_create{
display: none;
}
</style>
Articles Controller中的“ editcategory（）”方法。
public function editcategory(){
$this->loadModel('Articlecats');
$category_id = $this->request->getData('category');
$articlecat_data = $this->Articlecats->find('all', ['conditions' => ['id' => $category_id]]);
$this->response->body(json_encode($articlecat_data));
return $this->response;
}
情况是我通过JSON.parse方法以Javascript格式将“文章类别”信息检索到视图。现在的问题是，如何使用这个新检索到的Javascript数组填充ID为“ article_cat_create”的CakePHP表单元素，以便可以轻松地将更改保存到数据库中？
我可以使用CAKEPHP FORMHELPER这样做还是需要在FORMHELPER之外构建PHP表单？
[{“ id”：3，“ title”：“电子”，“ user_id”：3}]]
将此HTML返回给您的Ajax成功函数，并让该函数将其插入到表单中。
将以这种方式遵守所有常规的蛋糕形式约定，以后的发布数据将正是您所需要的。
只需稍微注意一下原始页面和ajax返回的代码段中的id和class属性，就可以轻松地换出整个表单（仅换为内部HTML或向现有表单添加更多的输入。） >
因此，我对“我可以使用CAKEPHP FORMHELPER这样做吗”的具体答案是。