Myt*_*ish 3 ruby-on-rails rails-admin
我有一个自关联模型,允许用户定义"父照片",以便将它们组合在一起.
我的模特:
class Photo < ActiveRecord::Base
attr_accessible :image, :parent_photo
has_attached_file :image, :styles => { :medium => "300x300>", :thumb => "100x100>" }
validates_attachment :image,
:presence => true,
:size => { :in => 20..2000.kilobytes },
:content_type => { :content_type => [ 'image/jpeg', 'image/png' ] }
belongs_to :parent, class_name: "Photo", foreign_key: :parent_photo
def associated_photos
Photo.find_by_parent_photo(id)
end
end
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在我的rails_admin初始化程序中:
..
config.model Photo do
list do
field :image
field :associated_photos
end
end
end
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如何检索实际缩略图以在列表操作中使用?
这样的事情会起作用吗?
config.model Photo do
list do
field :image do
formatted_value do
bindings[:view].tag(:img, { :src => bindings[:object].image.url }) << value
end
field :associated_photos
end
end
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小智 5
要显示图像字段:
config.model Photo do
list do
field :image do
pretty_value do
bindings[:view].tag(:img, { :src => bindings[:object].image.url(:thumb) })
end
end
end
end
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