Question

我在rails上的ruby上实现了一个带有carrierwave的上传文件系统。目前每个用户都有一个文件，如何在用户上传新文件时添加而不是覆盖？允许用户以这种方式拥有许多文件（每次只上传一个）

这是我的用户控制器：

def update  #upload personal file
  files = current_user.personal_files
  files += params[:user][:personal_files]
  current_user.personal_files = files
  current_user.save

  respond_to do |format|
    if @user.save
      # copy_file   #make a copy of the uploaded file in public/files/data.xml for running in the bat file
      format.html { redirect_to :back, notice: 'File was sucessfully uploaded!' }
      format.json { render :show, status: :ok, location: @user }

    else
      format.html { render :edit }
      format.json { render json: @user.errors, status: :unprocessable_entity }
    end
  end
end

当我添加一个新文件时，它出现在DB中：[nil，＆＃34; new_file＆＃34;]。显示为nil并用新的覆盖旧文件。

和我的观点：

<%= form_for current_user, :method => :put, :html => {:multipart => true} do |f| %>
  <h4 class="h1-form">Submit your personal performance file in order to WebProcessPAIR analyse your performance problems</h4>
  <div class="field-wrap">
    <div class="input-group image-preview">
      <input type="text" class="form-control txt_color file_text log_placeholder" placeholder="Upload xml file" disabled="disabled">
      <span class="input-group-btn">
        <span class="btn btn-large btn-default  btn-file">
          <span class="glyphicon glyphicon-folder-open"></span>
          Browse
          <%= f.file_field :personal_files, accept: 'text/xml', multiple: true %>
        </span>
        <%= button_tag(:type => 'submit', :class => 'btn btn-info sbmt', :disabled => true) do %>
          <i class="glyphicon glyphicon-share-alt"></i> Upload
        <% end %>
      </span>
    </div>
  </div>
<% end %>

Answer 1

您可以在控制器方法中执行类似的操作。您必须按照here

所述实施多个文件上传

files = upload.files # copy the old images
files << params[:upload][:file] # add new file to the files
upload.files = files # assign back
upload.save

Answer 2

<%= form_for @product, html: { multipart: true } do |f| %>

在form_for中尝试此multiple: true。希望这会对你有所帮助。

使用carrierwave添加更多文件

2 个答案: