Ruby-on-rails 使用回形针通过 Activeadmin Rails 上传文件
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File upload with Activeadmin Rails using paperclip
提问by Sebastien
I use Active admin as my rails application backend. I want to make a file upload. How can I accomplish this functionality?
我使用 Active admin 作为我的 rails 应用程序后端。我想做一个文件上传。我怎样才能完成这个功能？
回答by Sebastien
I found a way to use Paperclip with Active Admin.
我找到了一种通过 Active Admin 使用 Paperclip 的方法。
I added this code in my model "Event" :
我在模型“事件”中添加了此代码：
has_attached_file :map, :styles => { :medium => "238x238>",
:thumb => "100x100>"
}
And i did this for my admin model :
我为我的管理模型做了这个：
ActiveAdmin.register Event do
form :html => { :enctype => "multipart/form-data" } do |f|
f.inputs "Details" do
f.input :continent
f.input :event_type
f.input :name
f.input :title
f.input :content
f.input :date_start, :as => :date
f.input :date_end, :as => :date
f.input :place
f.input :map, :as => :file
f.input :image, :as => :file, :hint => f.template.image_tag(f.object.image.url(:medium))
f.input :userfull_info
f.input :price
f.input :phone, :as => :phone
f.input :website, :as => :url
end
f.buttons
end
end
To use it on the index page, you have to use :
要在索引页面上使用它，您必须使用：
column "Image" do |event|
link_to(image_tag(event.image.url(:thumb), :height => '100'), admin_event_path(event))
end
default_actions
end
回答by kokemomuke
Got it worked for Rails 4.1 and Paperclip 4.1:
让它适用于 Rails 4.1 和 Paperclip 4.1：
Model
模型
class Hotel < ActiveRecord::Base
has_attached_file :thumbnail, :styles => { :medium => "300x300#", :thumb => "200x200#" }
validates_attachment :thumbnail, content_type: { content_type: ["image/jpg", "image/jpeg", "image/png"] }
end
Admin Model
管理模式
ActiveAdmin.register Hotel do
permit_params :name, :description, :price, :thumbnail
form do |f|
f.inputs "Project Details" do
f.input :name
f.input :thumbnail, :required => false, :as => :file
# Will preview the image when the object is edited
end
f.actions
end
show do |ad|
attributes_table do
row :name
row :thumbnail do
image_tag(ad.thumbnail.url(:thumb))
end
# Will display the image on show object page
end
end
end
回答by mmarqueti
I'm using the rails 3.0.1 and the following code
我正在使用 rails 3.0.1 和以下代码
f.input :image, :hint => "current image: #{f.template.image_tag(f.object.image.url(:thumb))}"
return a string. After search a solution, i found it.
返回一个字符串。搜索解决方案后，我找到了。
f.input :image, :hint => f.template.image_tag(f.object.image.url(:thumb))
Send direct the object, will return a image to the html
直接发送对象，会返回一个图片给html
回答by Amal Kumar S
In latest Version of ActiveAdmin & Rails 4 for displaying the file field we need to use the below code
在最新版本的 ActiveAdmin & Rails 4 中，我们需要使用以下代码来显示文件字段
Previously we used f.input :uploads, :as => :file
以前我们使用 f.input :uploads, :as => :file
ActiveAdmin.register Project do
permit_params :name, :uploads
form multipart: true do |f|
f.inputs "Project Details" do
f.input :name
f.input :uploads, required: false
end
f.actions
end
end
