我懷疑問題在於我創建多態圖像屬性的方式。我在表格中使用fields_for
。 在這種情況下,用戶可以創建帖子並使用回形針添加圖像,並使用S3存儲。 我使用的是多態圖像模式 「post_image」:配置Rails 3 +多態圖像模型+回形針和Amazon S3,沒有錯誤,但沒有上傳
class PostImage < ActiveRecord::Base
belongs_to :imageable, :polymorphic => true
#.merge(PAPERCLIP_OPS)
has_attached_file :image, :styles => { :medium => "200x200>", :thumb => "50x50>" },
:storage => :s3,
:s3_credentials => "#{Rails.root}/config/s3.yml",
:path => "/:style/:id/:filename",
:bucket => "zounds-dev"
validates_attachment_presence :image
validates_attachment_size :image, :less_than => 5.megabytes
end
郵政型號:
class Post < ActiveRecord::Base
has_many :post_images, :as => :imageable, :dependent => :destroy
.
.
.
accepts_nested_attributes_for :post_images, :reject_if => lambda { |t| t[:post_image].nil?}, :allow_destroy => true
end
新話題形式:
=form_for(setup_post(@post,current_user), :html => { :multipart => true}) do |f|
%dl
=f.fields_for :post_images do |ff|
=ff.file_field :image
%dt.field=f.label :name
%dd.field=f.text_field :name
%dt.field=f.label :description
%dd.field=f.text_area :description
=f.fields_for :user do |u|
=render "user_fields", :f => u
=f.fields_for :assignments do |ff|
=ff.check_box :_destroy, {:checked => ff.object.persisted?}, '0','1'
=ff.label :_destroy, ff.object.group.name
=ff.hidden_field :group_id
.action=f.submit "Save Post"
的setup_post
中郵form_for
使用的輔助方法:(組東西不在這裏相關)
def setup_post(post, current_user)
groups = current_user.groups_as_owner + current_user.groups_as_member
(groups - post.groups).each do |group|
post.assignments.build(:group => group)
end
post.assignments.sort_by {|x| x.group.name }
post_image = post.post_images.build
post
end
柱控制器:
def new
@user = User.find(params[:user_id])
# @post = @user.posts.build
@post = Post.new
respond_to do |format|
format.html # new.html.erb
format.xml { render :xml => @post }
end
end
def create
@user = current_user
@post = @user.posts.build(params[:post])
.
.
.
end
我懷疑的問題是,我使用fields_for
爲post_image屬性,但我已經看遍了,無法弄清楚實現多態嵌套圖像屬性的正確方法是什麼。
我也做了s3sh
亞馬遜S3控制檯的事情,雖然我無法上傳圖像,因爲我無法弄清楚如何將正確的圖像路徑傳遞給open()函數,我連接到S3。我的s3.yml
文件設置正確。
感謝亞勒, 布賴恩
不錯的一個。感謝隊友:) – 2013-12-09 08:18:51
以防萬一有人讀到這個:只刪除這個頁面:reject_if => lambda {| t | t [:post_image] .nil?}如果你想讓圖像記錄被刪除,你可以保留:allow_destroy => true。 – 2013-12-09 09:04:01