您好我有<form action="upload.php" method="post" enctype="multipart/form-data">
Your Photo: <input type="file" name="image" />
<input type="submit" name="submit" value="Submit" />
</form>
<?php
print_r($_FILES);
// file properties
$file_name = $_FILES['image']['name'];
$file_tmp_name = $_FILES['image']['tmp_name'];
$file_size = $_FILES['image']['size'];
$file_error = $_FILES['image']['error'];
// get the extension of the file
$file_ext = explode('.', $file_name);
$file_ext = strtolower(end($file_ext));
var_dump(file_exists('uploads'));
// this is false
if(chmod('uploads', 0777) ){
echo " booooh";
}
else{
echo "naaah";
}
$file_name_new = uniqid('', true) . '.' . $file_ext;
echo "<br>";
echo $file_destination = '/uploads/' . $file_name;
// this is false too
if(move_uploaded_file($file_temp, $file_destination)) {
echo "<br>$file_destination<br>";
echo "hello world<br>";
}
else {
echo "<br>file not uploaded<br>";
}
?>
我不明白，因为我在帖子中创建了一个名为undefined local variable or method 'post' for #<#<Class:0x007ffc40469ad0>:0x007ffc40461088>
_comments.html.erb它呈现<p class="text-center">Poster un commentaire</p>
<%= simple_form_for [post, post.comments.new] do |f| %>
<%= f.error_notification %>
<%= f.input :content, label: "Commentaire"%>
<%= f.submit "Envoyer", class: "btn btn-primary" %>
<% end %>
未定义的方法在此行<% render 'comments' %>
模型帖子是<%= simple_form_for [post, post.comments.new] do |f| %>
模型帖子是has_many :comments, dependent: :destroy
模型评论为has_many :comments, dependent: :destroy
路线是 资源：帖子做 资源：类别 资源：评论 端
评论控制器
belongs_to :user
belongs_to :post非常感谢你的帮助。
答案 0 :(得分：1)
尝试更新以下内容：
<%= simple_form_for [post, post.comments.new] do |f| %>
用这个：
<%= simple_form_for [@post, @post.comments.new] do |f| %>