使用ruby/rails将文件上传到网站

<%= form_with model: @upload, local: true do |form| %>
  <%= form.label :file %>
  <%= form.file_field :file %>
  <%= form.submit 'Upload' %>
<% end %>

def create
  @upload = Upload.new(upload_params)

  if @upload.save
    redirect_to @upload, notice: 'File was successfully uploaded.'
  else
    render :new
  end
end

private

def upload_params
  params.require(:upload).permit(:file)
end

class Upload< ApplicationRecord
  has_one_attached :file

  validates :file, attached: true
end