附件只传递文件名 - Rails 4

Question

我想在Rails 4中以嵌套形式传递一个文档，但参数只取附件名。我已经做了一些观察，人们遇到的大多数问题都是因为他们遗漏了我在代码中的:multipart => true。我有两个fields_for在相同的形式（即两个孩子形式）我不确定这是否可能是问题的一部分。

这是我的表格。我要离开了一些属性的div，错误消息为简洁起见

= form_for([@auction, @bid], html: {class: ''})do |f| 
     = f.fields_for :inventory_part, InventoryPart.new do |cm| 
     .form-group 
      .col-lg-6 
      %label.col-lg-4.control-label Part No. 
       = cm.text_field :part_num 
      %label.col-lg-4.control-label Manufacturer 
       = cm.text_field :manufacturer 
     .form-group 
      %label Serial No. 
       = cm.text_field :serial_num 
      %label Condition 
       .inv-radio-btns 
       .right-radios 
        .radio 
        = cm.radio_button :condition, "recent" 
        = cm.label :condition, "NE" 
        .radio 
        = cm.radio_button :condition, "overhaul" 
        = cm.label :condition, "OH" 
        .radio 
        = cm.radio_button :condition, "as_removed" 
        = cm.label :condition, "AR" 

      .form-group 
      %label Amount: 
       = f.text_field :part_price 
      .form-group 
      %label Shipping Est: 
       = f.text_field :est_shipping_cost 
      .form-group 
       %label Documentation: 
       = f.fields_for :document, Document.new, html: { :multipart => true, class: "form-control"} do |dm| 
        .files 
        %label.btne 
         Browse 
         = dm.file_field :attachment 

     = f.submit 'Submit Quote', class: 'btn btn-defualt bg-success pull-right' 

的要求，控制器动作：

def temp_user_create_bid 
     Bid.strip_symbols(bid_params) 
     @bid = @auction.bids.new(bid_params) 
     @inventory_part = InventoryPart.new(inventory_part_params) 
     part_match = Part.find_by(part_num: @inventory_part.part_num.upcase) 
     respond_to do |format| 
      if part_match 
       @bid.inventory_part = @inventory_part 
       if @bid.save 
        @inventory_part.add_part_details(part_match, current_user) 
        if @inventory_part.save 
         document_params[:attachment].each { |doc| @bid.documents.create(name: doc.original_filename, attachment: doc)} if document_params 
         Notification.notify_other_bidders(@auction, current_user, "A quote has been placed on an RFQ you are participating in!") 
         Notification.notify_auctioner(@auction, "A new quote was placed in your RFQ!") 
         format.html { redirect_to @bid.auction, notice: 'Your quote has been saved' } 
        else 
         format.html { render :temp_user_new_bid } 
        end 
       elsif !part_match 
        flash[:error] = "Part number is not valid" 
        format.html { redirect_to temp_user_new_bid(@bid.auction), alert: 'Part Number was not valid.' } 
       else 
        flash[:error] = @bid.errors.full_messages.to_sentence.gsub('.','') 
        format.html { redirect_to new_auction_bid_path(@auction) } 
        format.json { render json: @bid.errors, status: :unprocessable_entity } 
       end 
      end 
     end 
    end 

和PARAMS

{"utf8"=>"✓", "authenticity_token"=>"wKAxNdL0rRdN5iHUMHEw7lBl6gkdWK+MDddlWUsGIYdXVkcTMvT/hNt0/45Y6SYxXf0A8p5LY/6IsiK68Jtj2A==", 
"bid"=>{ 
    "inventory_part"=>{ 
    "part_num"=>"123", "manufacturer"=>"Textron", 
    "serial_num"=>"2342", "condition"=>"overhaul" 
    }, 
    "part_price"=>"2344.44", "est_shipping_cost"=>"203.00", 
    "quantity"=>"1", "tag_date"=>"2017-05-23", "reference_num"=>"34ko33", 
    "document"=>{ 
    "attachment"=>"Second EIN.pdf" 
    } 
}, 
"commit"=>"Submit Quote", "controller"=>"bids", 
"action"=>"temp_user_create_bid", "auction_id"=>"113"} 

Answer 1

请使用file_field_tag而不是file_field并检查它是否有效。

Answer 2

我已经做了一些前瞻性和大部分问题的人都是 经历了，因为他们离开了：多=>真的，我 在我的代码。

你有它在你的代码，但在错误的地方。您应该通过:multipart => true作为html选项为form_for而不是fields_for接受附件。

= form_for([@auction, @bid], html: {:multipart => true, class: ''}) do |f| 

，并从fields_for

= f.fields_for :document, Document.new, html: {class: "form-control"} do |dm|