我有一个 Catalog
它有一个名为 file 的属性:
class Catalog < ActiveRecord::Base
mount_uploader :file, CatalogUploader
我将如何创建一个链接来在浏览器中显示该文件?
我试过
<%= link_to "zzzz", catalog.file_url %>
但是当我单击该链接时,它只会给我一个路由错误
Routing Error
No route matches [GET] "/Users/emai/Documents/mysite/catalogs/2/vegetarian.png"
而且 URL 看起来也不正确:
http://localhost:3000/Users/emai/Documents/mysite/catalogs/2/vegetarian.png
.我知道图片存在是因为我制作了一个下载文件的链接,并且工作正常。但是,我想显示图片。目录上传者:
# encoding: utf-8
class CatalogUploader < CarrierWave::Uploader::Base
# Include RMagick or MiniMagick support:
# include CarrierWave::RMagick
# include CarrierWave::MiniMagick
# Choose what kind of storage to use for this uploader:
storage :file
# storage :fog
# Override the directory where uploaded files will be stored.
# This is a sensible default for uploaders that are meant to be mounted:
def store_dir
if Rails.env.test? || Rails.env.cucumber?
"#{Rails.root}/public/test/file_uploads/#{model.class.to_s.underscore}/#{mounted_as}/#{model.id}"
else
"#{Rails.root}/catalogs/#{model.id}"
end
end
# Provide a default URL as a default if there hasn't been a file uploaded:
# def default_url
# # For Rails 3.1+ asset pipeline compatibility:
# # ActionController::Base.helpers.asset_path("fallback/" + [version_name, "default.png"].compact.join('_'))
#
# "/images/fallback/" + [version_name, "default.png"].compact.join('_')
# end
# Process files as they are uploaded:
# process :scale => [200, 300]
#
# def scale(width, height)
# # do something
# end
# Create different versions of your uploaded files:
# version :thumb do
# process :scale => [50, 50]
# end
# Add a white list of extensions which are allowed to be uploaded.
# For images you might use something like this:
# def extension_white_list
# %w(jpg jpeg gif png)
# end
# Override the filename of the uploaded files:
# Avoid using model.id or version_name here, see uploader/store.rb for details.
# def filename
# "something.jpg" if original_filename
# end
end
最佳答案
根据 the documentation ,你应该调用方法 url
像这样的文件对象:
<%= link_to "zzzz", catalog.file.url %>
关于ruby-on-rails - rails + 载波 : How to link to file?,我们在Stack Overflow上找到一个类似的问题: https://stackoverflow.com/questions/23478918/