我很接近...非常接近...我可以上传单个文件就好了...但是当我将表单的类型更改file_field
为:multiple => true
这样我可以一次上传多个图像时,我上传的文件被包裹在一个数组......并且“accepts_nested_attributes_for”的“魔法”丢失了。
编辑:
经过更多检查,我想知道我是否需要打扰accepts_nested_attributes_for
?也许我应该file_field, :multiple => true
在我的 Gallery 表单(而不是嵌套表单)中有一个,然后在我的 create 操作中创建新的画廊,然后params[:gallery][:photos_attributes]["0"][:image]
手动循环遍历数组中的每个元素,可以这么说,调用@gallery.photos.create
每个元素。?!?看起来很麻烦……但这是我能想到的。
希望有更多Rails经验的人能加入...
参数:
{"utf8"=>"✓",
"authenticity_token"=>"9jXvIwcllct7UyUfo6cvhEucQf2u3SY50SuaCLtFO4c=",
"gallery"=>{
"name"=>"First Gallery",
"photos_attributes"=>{"0"=>{
"image"=>[
#<ActionDispatch::Http::UploadedFile:0x00000104b78978
@original_filename="first_test_image.jpg",
@content_type="image/jpeg",
@headers="Content-Disposition: form-data; name=\"gallery[photos_attributes][0][image][]\"; filename=\"first_test_image.jpg\"\r\nContent-Type: image/jpeg\r\n",
@tempfile=#<File:/var/folders/bQ/bQYZC2ukFZCvbKzEDGRtJE+++TI/-Tmp-/RackMultipart20110622-4459-vz78ee>>,
#<ActionDispatch::Http::UploadedFile:0x00000104b78950
@original_filename="second_test_image.jpg",
@content_type="image/jpeg",
@headers="Content-Disposition: form-data; name=\"gallery[photos_attributes][0][image][]\"; filename=\"second_test_image.jpg\"\r\nContent-Type: image/jpeg\r\n",
@tempfile=#<File:/var/folders/bQ/bQYZC2ukFZCvbKzEDGRtJE+++TI/-Tmp-/RackMultipart20110622-4459-1jzhhyg>>
]
}
}
}, "commit"=>"Save", "action"=>"create", "controller"=>"galleries"}
#app/models/gallery.rb
class Gallery < ActiveRecord::Base
has_many :photos, :dependent => :destroy
accepts_nested_attributes_for :photos
end
#app/models/photo.rb
class Photo < ActiveRecord::Base
belongs_to :gallery
mount_uploader :photo, PhotoUploader
end
#config/routes.rb
resources :galleries do
resources :photo, :only => [:create, :destroy]
end
画廊控制器
def new
@gallery = Gallery.new
@gallery.photos.build
respond_to do |format|
format.html # new.html.erb
format.json { render json: @gallery }
end
end
...
def create
@gallery = Gallery.new(params[:gallery])
respond_to do |format|
if @gallery.save
format.html { redirect_to @gallery, notice: 'Gallery was successfully created.' }
format.json { render json: @gallery, status: :created, location: @gallery }
else
format.html { render action: "new" }
format.json { render json: @gallery.errors, status: :unprocessable_entity }
end
end
end