CarrierWave不保存图像文件

时间:2015-08-03 01:29:18

标签: ruby-on-rails image carrierwave

我正在尝试通过ImageUploader上传与每个帖子相关联的图片。但是,在选择图像文件并点击上传按钮后,没有文件URL保存到数据库中。我已在rails控制台中检查了图像网址,但图像未保存。我找到帖子并查看与其关联的所有其他信息和图片:nil。提交帖子创建表单时,我也没有收到任何错误。但是,当页面刷新时,选择并“保存”的图像消失。我已正确安装了carrierwave,mini_magick和雾。有关图像未上传的任何想法?谢谢大家。

到目前为止,这是我的代码:

发布模型:

class Post < ActiveRecord::Base
  has_many :comments
  belongs_to :user
  belongs_to :topic
  mount_uploader :image, ImageUploader


    default_scope { order('created_at DESC')}


  validates :title, length: {minimum: 5}, presence: true
  validates :body, length: {minimum: 20}, presence: true
  validates :topic, presence: true
  validates :user, presence: true



  def markdown_title
    render_as_markdown(self.title)
  end

  def markdown_body
    render_as_markdown(self.body)
  end

  private 

  def render_as_markdown(markdown)
    renderer = Redcarpet::Render::HTML.new
    extensions = {fenced_code_block: true}
    redcarpet = Redcarpet::Markdown.new(renderer, extensions)
    (redcarpet.render markdown).html_safe
  end

end

app / uploaders / image_uploader.rb上传路径:

   def store_dir
     "uploads/#{model.class.to_s.underscore}/#{mounted_as}/#{model.id}"
   end

发布_form文件:

<%= form_for [topic, post] do |f| %>
  <% if post.errors.any? %>
    <div class="alert alert-danger">
      <h4>There are <%= pluralize(post.errors.count, "error") %>.</h4>
      <ul>
        <% post.errors.full_messages.each do |msg| %>
        <li><%= msg %></li>
        <% end %>
      </ul>
    </div>
  <% end %>
  <%= form_group_tag(post.errors[:title]) do %>
    <%= f.label :title %>
    <%= f.text_field :title, class: 'form-control', placeholder: "Enter post title" %>
  <% end %>
  <%= form_group_tag(post.errors[:body]) do %>
    <%= f.label :body %>
    <%= f.text_area  :body, rows: 8, class: 'form-control', placeholder: "Enter post body" %>
  <% end %>

  <div class="form-group">
    <%= f.label :image %>
    <%= f.file_field :image %>
    <%= f.hidden_field :image %>
  </div>

  <div class="form-group">
    <%= f.submit "Save", class: "btn btn-success" %>
  </div>
  <% end %>

发布/编辑文件:

 <h1>Edit Post</h1>

 <div class="row">
   <div class="col-md-4">
     <p>Guidelines for posts</p>
     <ul>
       <li>Make sure it rhymes.</li>
       <li>Don't use the letter "A".</li>
       <li>The incessant use of hashtags will get you banned.</li>
     </ul>
   </div>
   <div class="col-md-8">
    <%= render partial: 'form', locals: { topic: @topic, post: @post } %>
   </div>
 </div>

发布/显示文件:

<h1><%= @post.markdown_title %></h1>

<div class="row">
  <div class="col-md-8">
    <small>
      <%= image_tag(@post.user.avatar.tiny.url) if @post.user.avatar? %>
      submitted <%= time_ago_in_words(@post.created_at) %> ago by
      <%= @post.user.name %>
    </small>
    <p><%= @post.markdown_body %></p>
    <small>
      <%= image_tag @post.image_url%> 
    </small>
  </div>
  <div class="col-md-4">
    <% if policy(@post).edit? %>
      <%= link_to "Edit", edit_topic_post_path(@topic, @post), class: 'btn btn-success' %>
    <% end %>
  </div>

发布控制器:

class PostsController < ApplicationController
  def show
    @post = Post.find(params[:id])
    @topic = Topic.find(params[:topic_id])
  end

  def new
    @topic = Topic.find(params[:topic_id])
    @post = Post.new
    authorize @post
  end

  def create
    @topic = Topic.find(params[:topic_id])
    @post = Post.new(post_params)
    @post.user = current_user
    @post.topic = @topic
    authorize @post
      if @post.save
        flash[:notice] = "Post was saved."
        redirect_to [@topic, @post]
      else
        flash[:error] = "There was an error saving this post. Please try again."
        render :new
      end
  end

  def edit
    @topic = Topic.find(params[:topic_id])
    @post = Post.find(params[:id])
    authorize @post
  end

   def update
     @topic = Topic.find(params[:topic_id])
     @post = Post.find(params[:id])
     authorize @post
     if @post.update_attributes(post_params)
       flash[:notice] = "Post was updated."
       redirect_to [@topic, @post]
     else
       flash[:error] = "There was an error saving the post. Please try again."
       render :edit
     end
   end

   private

  def post_params
    params.require(:post).permit(:title, :body, :image)
  end

end

服务器登录提交表单:

Started GET "/topics/1/posts/61/edit" for ::1 at 2015-08-02 21:49:54 -0400
Processing by PostsController#edit as HTML
  Parameters: {"topic_id"=>"1", "id"=>"61"}
  Topic Load (0.1ms)  SELECT  "topics".* FROM "topics" WHERE "topics"."id" = ? LIMIT 1  [["id", 1]]
  Post Load (0.1ms)  SELECT  "posts".* FROM "posts" WHERE "posts"."id" = ?  ORDER BY created_at DESC LIMIT 1  [["id", 61]]
  User Load (0.1ms)  SELECT  "users".* FROM "users" WHERE "users"."id" = ?  ORDER BY "users"."id" ASC LIMIT 1  [["id", 6]]
  User Load (0.1ms)  SELECT  "users".* FROM "users" WHERE "users"."id" = ? LIMIT 1  [["id", 6]]
  Rendered posts/_form.html.erb (2.3ms)
  Rendered posts/edit.html.erb within layouts/application (4.1ms)
Completed 200 OK in 79ms (Views: 76.3ms | ActiveRecord: 0.3ms)


Started PATCH "/topics/1/posts/61" for ::1 at 2015-08-02 21:50:01 -0400
Processing by PostsController#update as HTML
  Parameters: {"utf8"=>"✓", "authenticity_token"=>"WrE4W30KlADBMbzSfNe/BCQPEHL3M4NhPGEo+Eop0iB9DA8QSHfz0zyBXsuW1NIHSyR7vFU1M7Ny4wUFMXO/Hg==", "post"=>{"title"=>"IMAGE IMAGE TESTING", "body"=>"JUST DO IT!!!!!! IMAGEEEEEEEE", "image"=>""}, "commit"=>"Save", "topic_id"=>"1", "id"=>"61"}
  Topic Load (0.1ms)  SELECT  "topics".* FROM "topics" WHERE "topics"."id" = ? LIMIT 1  [["id", 1]]
  Post Load (0.1ms)  SELECT  "posts".* FROM "posts" WHERE "posts"."id" = ?  ORDER BY created_at DESC LIMIT 1  [["id", 61]]
  User Load (0.1ms)  SELECT  "users".* FROM "users" WHERE "users"."id" = ?  ORDER BY "users"."id" ASC LIMIT 1  [["id", 6]]
  User Load (0.1ms)  SELECT  "users".* FROM "users" WHERE "users"."id" = ? LIMIT 1  [["id", 6]]
   (0.1ms)  begin transaction
  Topic Load (0.1ms)  SELECT  "topics".* FROM "topics" WHERE "topics"."id" = ? LIMIT 1  [["id", 1]]
  Post Load (0.0ms)  SELECT  "posts".* FROM "posts" WHERE "posts"."id" = ?  ORDER BY created_at DESC LIMIT 1  [["id", 61]]
  SQL (23.1ms)  UPDATE "posts" SET "image" = ?, "updated_at" = ? WHERE "posts"."id" = ?  [["image", nil], ["updated_at", "2015-08-03 01:50:01.161743"], ["id", 61]]
   (1.4ms)  commit transaction
Redirected to http://localhost:3000/topics/1/posts/61
Completed 302 Found in 33ms (ActiveRecord: 25.0ms)


Started GET "/topics/1/posts/61" for ::1 at 2015-08-02 21:50:01 -0400
Processing by PostsController#show as HTML
  Parameters: {"topic_id"=>"1", "id"=>"61"}
  Post Load (0.1ms)  SELECT  "posts".* FROM "posts" WHERE "posts"."id" = ?  ORDER BY created_at DESC LIMIT 1  [["id", 61]]
  Topic Load (0.1ms)  SELECT  "topics".* FROM "topics" WHERE "topics"."id" = ? LIMIT 1  [["id", 1]]
  User Load (0.1ms)  SELECT  "users".* FROM "users" WHERE "users"."id" = ? LIMIT 1  [["id", 6]]
  User Load (0.2ms)  SELECT  "users".* FROM "users" WHERE "users"."id" = ?  ORDER BY "users"."id" ASC LIMIT 1  [["id", 6]]
  Rendered posts/show.html.erb within layouts/application (2.8ms)
Completed 200 OK in 73ms (Views: 71.4ms | ActiveRecord: 0.4ms)

0 个答案:

没有答案
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