Question

这是我的第一个问题stackoverflow。

我尝试一次修改上传多个文件。

new.html.erb

<%= form_for(@attractions) do |f| %>
    <div class="form-group">
      <%= f.label :name, t("attraction.name"), class: "col-md-2 control-label" %>
      <div class="col-md-10">
        <%= f.text_field :name, class: "form-control" %>
      </div>
    </div>

    <div class="form-group">
      <%= f.fields_for :attraction_photos do |att_photo| %>
          <%= att_photo.label :photo, t("attraction.attraction_photo"), class: "col-md-2 control-label" %>
          <div class="col-md-10">
            <%= att_photo.file_field :photo, class: "form-control", multiple: true %> // <==== I add this
          </div>
      <% end %>
    </div>

attraction_controller

def new
  @attractions = Attraction.new
  @attractions.attraction_photos.build
end

def create
  @attractions = current_user.attractions.build(attraction_params)

  if @attractions.save
    flash[:success] = "success"
    redirect_to attractions_path
  else
    flash[:danger] = @attractions.errors.full_messages
    render action: :new
  end
end

def attraction_params
  params.require(:attraction).permit(:name, :longitude, :latitude, :address, :phone, :category_id, attraction_photos_attributes: [:photo => []])
end

我得到了参数

{
    "name" => "name", 
    "longitude" => "111",
    "latitude" => "222", 
    "address" => "addresss", 
    "phone" => "phone", 
    "category_id" => "1", 
     "attraction_photos_attributes" => {
        "0" => {
            "photo" => [#, @original_filename = "aaaaaaaaaaaa.png", @content_type = "image/png", @headers = "Content-Disposition: form-data; name=\"attraction[attraction_photos_attributes][0][photo][]\"; filename=\"aaaaaaaaaaaa.png\"\r\nContent-Type: image/png\r\n" > , #, @original_filename = "bbbbbbbbbbb.png", @content_type = "image/png", @headers = "Content-Disposition: form-data; name=\"attraction[attraction_photos_attributes][0][photo][]\"; filename=\"bbbbbbbbbbb.png\"\r\nContent-Type: image/png\r\n" > ]
        }
    }
}

我想我应该使用循环来创建照片。但数据结构并不是我想要的。谢谢你的帮助。

Eidt

吸引力模型

class Attraction < ActiveRecord::Base
  belongs_to :user
  belongs_to :category
  has_many :attraction_photos, dependent: :destroy

  accepts_nested_attributes_for :attraction_photos

  ...
end

吸引力照片模型

class AttractionPhoto < ActiveRecord::Base
  belongs_to :attraction

  mount_uploader :photo, AttractionImageUploader
end

Answer 1

你有两个选择

第一个选项使用数据库中的json字段上传图片。并非所有db都允许这样做，例如某些mysql2 db不允许您在数据库中使用json类型字段。使用这个也不是轨道上的红宝石最佳实践

rails carrierwave, one user has many image

另一个选项来自此解决方案，您不会在数据库中使用JSON字段，而是创建一个单独的表

Rails 4 multiple image or file upload using carrierwave

现在请告诉我为什么你不想使用这个解决方案，因为我实施了两个，我会尽力帮助你

同样根据您的问题，目前尚不清楚您遇到的问题

rails carrierwave，上传多个文件

1 个答案: