在rails中实现上传文件的实现非常的简单
步骤：
通过一个例子来做(winxp，rails 1.2.5)：
rails demo -d mysql
cd demo
mysqladmin -u root create demo_development
1.使用插件
安装attechment_fu插件：
2.生成model
ruby script/generate model mugshot
3.编辑迁移文件001_create_mugshots.rb
class CreateMugshots < ActiveRecord::Migration
def self.up
create_table :mugshots do |t|
t.column :parent_id, :integer
t.column :content_type, :string
t.column :filename, :string
t.column :thumbnail, :string
t.column :size, :integer
t.column :width, :integer
t.column :height, :integer
end
end
def self.down
drop_table :mugshots
end
end
----
4.执行迁移任务:
rake db:migrate
5.修改Model， mugshot.rb
class Mugshot < ActiveRecord::Base
has_attachment :storage => :file_system
validates_as_attachment
end
5.创建控制器：
ruby script/generate controller mugshots
class MugshotsController < ApplicationController
def new
@mugshot = Mugshot.new
end
def create
@mugshot = Mugshot.new(params[:mugshot])
if @mugshot.save
flash[:notice] = 'Mugshot was successfully created.'
redirect_to :action=>"new"
else
render :action => :new
end
end
end
--创建new模板：
<%= error_messages_for :mugshot %>
<% form_for(:mugshot, :url => {:action=>"create"},
:html => { :multipart => true }) do |f| -%>
<p>
<label for="mugshot">Upload A Mugshot:</label>
<%= f.file_field :uploaded_data %>
</p>
<p>
<%= submit_tag 'Create' %>
</p>
<% end -%>
--没什么问题应该可以运行了
ruby script/server
[url]http://localhost:3000/mugshots/new[/url]
上传的文件会保存在\public\mugshots中！
步骤：
通过一个例子来做(winxp，rails 1.2.5)：
rails demo -d mysql
cd demo
mysqladmin -u root create demo_development
1.使用插件
安装attechment_fu插件：
ruby script/plugin install [url]http://svn.techno-weenie.net/projects/plugins/attachment_fu/[/url]
2.生成model
ruby script/generate model mugshot
3.编辑迁移文件001_create_mugshots.rb
class CreateMugshots < ActiveRecord::Migration
def self.up
create_table :mugshots do |t|
t.column :parent_id, :integer
t.column :content_type, :string
t.column :filename, :string
t.column :thumbnail, :string
t.column :size, :integer
t.column :width, :integer
t.column :height, :integer
end
end
def self.down
drop_table :mugshots
end
end
----
4.执行迁移任务:
rake db:migrate
5.修改Model， mugshot.rb
class Mugshot < ActiveRecord::Base
has_attachment :storage => :file_system
validates_as_attachment
end
5.创建控制器：
ruby script/generate controller mugshots
class MugshotsController < ApplicationController
def new
@mugshot = Mugshot.new
end
def create
@mugshot = Mugshot.new(params[:mugshot])
if @mugshot.save
flash[:notice] = 'Mugshot was successfully created.'
redirect_to :action=>"new"
else
render :action => :new
end
end
end
--创建new模板：
<%= error_messages_for :mugshot %>
<% form_for(:mugshot, :url => {:action=>"create"},
:html => { :multipart => true }) do |f| -%>
<p>
<label for="mugshot">Upload A Mugshot:</label>
<%= f.file_field :uploaded_data %>
</p>
<p>
<%= submit_tag 'Create' %>
</p>
<% end -%>
--没什么问题应该可以运行了
ruby script/server
[url]http://localhost:3000/mugshots/new[/url]
上传的文件会保存在\public\mugshots中！
本文转自 fsjoy1983 51CTO博客，原文链接：http://blog.51cto.com/fsjoy/102271，如需转载请自行联系原作者
