1）当用户编辑请愿书时，我试图获得一个图像，我有两个表请愿书和用户我想保存在用户表的profile_imgurl属性中的是用户图像
这是我在AdminPetitonController文件中的post_edit方法。
2）如何在这里使用热切加载，我的意思是只使用$SponceringUser而不是$ProfileUser。所以我不需要跑两次单独的查询
public function post_edit($id = null)
{
if ($id)
{
$Petition = Petition::find($id);
if (!$Petition)
{
//oh noes! invalid petition specified!
Alert::error("That petition no longer exists");
return Redirect::action('AdminPetitionsController@index');
}
}
else
{
$Petition = new Petition;
}
$PetitionCreationForm = new AdminPetitionCreationForm;
$errors = array();
if ($PetitionCreationForm->passes())
{
$Petition->call_to_action = Input::get('call_to_action');
if (empty($Petition->id))
{
$Petition->slug = Str::slug($Petition->call_to_action);
}
$Petition->recipient = Input::get('recipient');
if (Input::get('feature_type') == '1')
{
$Petition->featured_sort_order = Input::get('featured_sort_order') + 1;
$Petition->flag_featured = 1;
}
else if(Input::get('feature_type') == '0')
{
$Petition->featured_sort_order=null;
$Petition->flag_featured = 0;
}
//$selected_position = Input::get('dropdown_menu_list');
$Petition->description_md = Input::get('description_md');
$Petition->description = Petition::parseMD($Petition->description_md);
$Petition->letter_md = Input::get('letter_md');
$Petition->letter = Petition::parseMD($Petition->letter_md);
$Petition->target_signatures = Input::get('target_signatures', 50000);
$Petition->flag_published = Input::get('flag_published');
$Petition->media_type = Input::get('media_type', null);
if (Input::get('media_type') == 'img' && Input::hasFile('petition_image'))
{
$Petition->media_url = Petition::uploadFile(Input::file('petition_image'));
}
else if (Input::get('media_type') == 'youtube' && Input::get('media_url_youtube'))
{
$Petition->media_url = Input::get('media_url_youtube');
}
// how to fix this part .... gurrrrrrrrrrrr=======================
$ProfileUser= $Petition->User();
if (Input::get('profile_type') == 'image' && Input::hasFile('profile_image'))
{
$ProfileUser->profile_img_url = Petition::uploadFile(Input::file('profile_image'));
}
else if (Input::get('profile_type') == 'url' && Input::get('profile_url'))
{
$ProfileUser->profile_img_url = Input::get('profile_url');
}
//$Petition->sponsor_user_id = $SponsoringUser->id;
$ProfileUser->save();
//====================================================
try {
try {
$SponsoringUser = User::where('email', Input::get('user.email'))->firstOrFail();
}
catch (Exception $e)
{
$PetitionSponsorForm = new AdminPetitionSponsorForm(Input::get('user'));
if ($PetitionSponsorForm->passes())
{
$SponsoringUser = new User;
$SponsoringUser->email = Input::get('user.email');
$SponsoringUser->first_name = Input::get('user.first_name');
$SponsoringUser->last_name = Input::get('user.last_name');
$SponsoringUser->populateLocation(Input::get('user.zip'));
$SponsoringUser->save();
}
else
{
throw new Exception();
}
}
$Petition->save();
如何具体修复那个部分（我强调了）我想我只是把那个部分搞砸了。它给了我一个错误，那就是save是一个未定义的方法。我不确定我是否需要制作另一个像$ProfileUser这样的变量。
有关更多详细信息，请参阅要点：https://gist.github.com/gupta2205/b33dcf762876e5df34d9
您的Gist不清楚，但您的请愿模型中是否设置了用户关系？
如果是，请尝试将有问题的行更改为：
$ProfileUser= $Petition->User;