CarrierWave文件上传在Rails中不起作用 [英] CarrierWave File Uploads not working in rails

问题描述

我需要将图像上传到我的电影收藏应用程序
i使用carrierwave来做到这一点（遵循railscasts步骤）

步骤1我将gem'carrierwave'，'〜> 0.9'添加到我的Gemfile中，然后运行bundle
第2步：在rask db
之后安装Rails g上载器图像，然后在Rails g支架上将电影名称设置为movietype与我的电影模型中的railscasts

  attr_accessible：name ，：moviestype，：image 
 mount_uploader：image，ImageUploader 
  

在我的_form.html中。 erb

 <％= form_for @filme，：html => {：multipart => true}做| f | ％> 
<％如果@ filme.errors.any？ ％> 
< div id = error_explanation> 
< h2<％=复数（@ filme.errors.count，错误）％>禁止保存该电影：< / h2> 
 
< ul> 
<％@ filme.errors.full_messages.each做| msg | ％> 
< li>％= msg％< / li> 
<％end％> 
< / ul> 
< / div> 
<％end％> 
 
< div class = field> 
<％= f.label：name％>< br> 
<％= f.text_field：name％> 
< / div> 
< div class = field> 
<％= f.label：电影类型％>< br> 
<％= f.text_field：moviestype％> 
< / div> 
< div class = field> 
< br> 
<％= f.file_field：image％> 
< / div> 
 
< div class = actions> 
<％= f.submit％> 
< / div> 
<％end％> 
  

在show.html.erb

 < p id = notice><％=通知％>< / p> 
 
< p> 
< strong>名称：< / strong> 
<％= @ filme.name％> 
< / p> 
 
< p> 
< strong>电影类型：< / strong> 
<％= @ filme.movi​​estype％> 
< / p> 
<％= image_tag @ filme.image_url（：thumb）如果@ filme.image？ ％> 
 
<％=链接到编辑，edit_filme_path（@filme）％> | 
<％= link_to'Back'，filmes_path％> 
  

问题是它没有上传任何图像，但是电影名称和其他字段正在插入db.how我可以解决这个问题吗？需要快速帮助。

解决方案

根据错误日志，您不允许图片保存到数据库中。
在您的 FilmesController 中，您需要允许：image 作为

  def filme_params 
 params.require（：filme）.permit（：name，：moviestype，：image）##添加：image属性
结束
  

I need to upload image to my filme collection application i use carrierwave to do this (follows the railscasts steps)

step 1 i add gem 'carrierwave', '~> 0.9' to my Gemfile then run bundle step 2 rails g uploader image then rails g scaffold filmes name moviestype after rake db step 3 rails g migration add_image_to_filmes image:string and then rake db

other step are same as railscasts

in my filme modle

attr_accessible :name, :moviestype, :image
  mount_uploader :image, ImageUploader

in my _form.html.erb

<%= form_for @filme, :html => {:multipart => true} do |f| %>
  <% if @filme.errors.any? %>
    <div id="error_explanation">
      <h2><%= pluralize(@filme.errors.count, "error") %> prohibited this filme from being saved:</h2>

      <ul>
      <% @filme.errors.full_messages.each do |msg| %>
        <li><%= msg %></li>
      <% end %>
      </ul>
    </div>
  <% end %>

  <div class="field">
    <%= f.label :name %><br>
    <%= f.text_field :name %>
  </div>
  <div class="field">
    <%= f.label :moviestype %><br>
    <%= f.text_field :moviestype %>
  </div>
  <div class="field">
   <br>
    <%= f.file_field :image %>
  </div>

  <div class="actions">
    <%= f.submit %>
  </div>
<% end %>

in show.html.erb

<p id="notice"><%= notice %></p>

<p>
  <strong>Name:</strong>
  <%= @filme.name %>
</p>

<p>
  <strong>Moviestype:</strong>
  <%= @filme.moviestype %>
</p>
<%= image_tag @filme.image_url(:thumb) if @filme.image? %>

<%= link_to 'Edit', edit_filme_path(@filme) %> |
<%= link_to 'Back', filmes_path %>

problem is it didn't upload any image but film name and other fields are inserting to db.how can i fix this ?need quick help.

解决方案

As per the error logs, you have not permitted image to be saved in the database. In your FilmesController, you need to permit :image as

def filme_params
  params.require(:filme).permit(:name, :moviestype, :image) ## Add :image attribute
end

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