Ruby-on-rails 如何在rails中上传文件？
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How to upload a file in rails?
提问by althaf_tvm
I'm new to rails. I want to know about file uploading process in rails. Can anyone please help me... Thanks, Althaf
我是导轨的新手。我想了解 Rails 中的文件上传过程。任何人都可以帮我...谢谢，Althaf
回答by Jason stewart
Usually gems/plugins are used to to handle file uploads. My favorite one, and perhaps the most ubiquitous is Paperclip.
通常 gems/plugins 用于处理文件上传。我最喜欢的，也许是最普遍的一种是Paperclip。
In your view, you'll have to tell the rails form helpers that you're uploading a file like this:
在您看来，您必须告诉 rails 表单助手您正在上传这样的文件：
<%= form_for @model, :html => { :multipart => true } do |form| %>
回答by Ballaji T
Here is a method on how to upload file without using any gem and only by using rails,
这是一种不使用任何 gem 仅使用 rails 上传文件的方法，
Solution :=>
解决方案：=>
def create
@photo = Photo.new(photo_params)
uploaded_io = params[:photo][:photo]
File.open(Rails.root.join('public', 'uploads', uploaded_io.original_filename), 'wb') do |file|
file.write(uploaded_io.read)
end
if @photo.save
flash[:success] = "The photo was added!"
redirect_to root_path
else
render 'new'
end
end
def upload
uploaded_io = params[:person][:picture]
File.open(Rails.root.join('public', 'uploads', uploaded_io.original_filename), 'wb') do |file|
file.write(uploaded_io.read)
end
end
And your form.html.erb in views should contain this, it is very simple,
视图中的 form.html.erb 应该包含这个，这很简单，
<%= form_for @photo do |f| %>
<%= f.file_field :photo %>
<div class="actions">
<%= f.submit "Upload" %>
</div>
<% end %>
and finally the model should have ,
最后模型应该有，
has_attached_file :image
.################################################## You can now enjoy loading any file .
.############################################## # 您现在可以享受加载任何文件的乐趣了。
Thank you. Have funn with rails.
谢谢你。玩得开心。
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