Question

我基本上有消息和message_part模型。我安装了carrierwave，生成的图片上传器，:picture和message都有message_part个列，我可以将图片上传到message。当我将图片上传到message_part时，此图片会覆盖所有其他图片，我在message和message_part中拥有相同的图片。

我的Message.rb

class Message < ActiveRecord::Base
  belongs_to :speaker
  has_many :messageparts
  has_many :message_categories
  has_many :categories, through: :message_categories
  mount_uploader :picture, PictureUploader
end

我的message_part.rb

class Messagepart < ActiveRecord::Base
  belongs_to :message
  belongs_to :speaker
  mount_uploader :picture, PictureUploader
end

我的message_part控制器创建

def create
    # @message = Message.find(params[:message_id])
    @messagepart = @message.messageparts.create(messagepart_params)
    @messagepart.speaker_id = current_speaker.id

    if @messagepart.save
      redirect_to message_path(@message)
    else
      render 'new'
    end
  end

我的消息控制器

def create
    @message = current_speaker.messages.build(message_params)
    if @message.save
    redirect_to messages_path
  else
    render 'new'
  end

  end

我对消息部分的看法

<%= simple_form_for([@message, @message.messageparts.build], html: { multipart: true } ) do |f| %>

<%= f.input :contentparttitle, label: "Part Title" %>
<%= f.input :contentpart, label: "Content Part", :as => :text, input_html: { :rows => 10, :class => "span6" } %>
<%= f.file_field :picture %>
<%= f.button :submit, label: "Add Parts", :class => 'btn-custom' %>
<% end %>

我对消息的看法

<%= simple_form_for @message, html: { multipart: true }  do |f| %>
  <%= f.input :title, label: "Message Title"  %>
  <%= f.input :description, label: "Short Description" %>
  <%= f.input :content, :as => :text, :input_html => { 'rows' => 10} %>
  <strong>Category:</strong>
    <%= f.collection_check_boxes :category_ids, Category.all, :id, :name do |cb| %>
    <% cb.label(class: "checkbox-inline input_checkbox") {cb.check_box(class: "checkbox") + cb.text} %>
    <% end %>
  <%= f.file_field :picture %>
  <%= f.button :submit %>
<% end %>

我的图片上传者

class PictureUploader < CarrierWave::Uploader::Base

  # Include RMagick or MiniMagick support:
  # include CarrierWave::RMagick
  # include CarrierWave::MiniMagick

  # Choose what kind of storage to use for this uploader:
  storage :file
  # storage :fog

  # Override the directory where uploaded files will be stored.
  # This is a sensible default for uploaders that are meant to be mounted:
  def store_dir
    "uploads/#{model.class.to_s.underscore}/#{mounted_as}/#{model.id}"
  end

  # Provide a default URL as a default if there hasn't been a file uploaded:
  # def default_url
  #   # For Rails 3.1+ asset pipeline compatibility:
  #   # ActionController::Base.helpers.asset_path("fallback/" + [version_name, "default.png"].compact.join('_'))
  #
  #   "/images/fallback/" + [version_name, "default.png"].compact.join('_')
  # end

  # Process files as they are uploaded:
  # process :scale => [200, 300]
  #
  # def scale(width, height)
  #   # do something
  # end

  # Create different versions of your uploaded files:
  # version :thumb do
  #   process :resize_to_fit => [50, 50]
  # end

  # Add a white list of extensions which are allowed to be uploaded.
  # For images you might use something like this:
  def extension_white_list
   %w(jpg jpeg gif png)
   end

  # Override the filename of the uploaded files:
  # Avoid using model.id or version_name here, see uploader/store.rb for details.
  # def filename
  #   "something.jpg" if original_filename
  # end

end

Answer 1

我想为两个模型使用两个单独的上传器，即使它们几乎相同。它可以保持您的对象的美观和整齐的名称，而不必担心覆盖。

和你的表格

<%= simple_form_for([@message, @message.messageparts.build], html: { multipart: true } ) do |f|%>

将同时更新@message和@message.messageparts

添加评论附件（message_part）

1 个答案: