一个简单的后台上传学校logo的页面.

app/controllers/school_controller.rb

@@ -2,8 +2,30 @@ class SchoolController < ApplicationController
   
   before_filter :require_admin, :only => :upload_logo
   
-  def upload_logo
+  def upload
+    uploaded_io = params[:logo]
+    school_id = 0
+    schools = School.where("name = ?", params[:school])
+    
+    schools.each do |s|
+      school_id = s.id
+    end
     
+    unless uploaded_io.nil? 
+      File.open(Rails.root.join('public', 'images', 'school', school_id.to_s+'.png'), 'wb') do |file|
+        file.write(uploaded_io.read)
+      end
+      
+      s1 = School.find(school_id)
+      s1.logo_link  = '/images/school/'+school_id.to_s+'.png'
+      s1.save
+      
+      
+    end    
+  end  
+  
+  def upload_logo
+
   end
   
   

app/views/school/upload_logo.html.erb

@@ -1 +1,5 @@
-<input type="file" />
+<%= form_tag({action: :upload},method: "post",  multipart: true) do %>
+	<%= text_field_tag 'school'%>
+	<%= file_field_tag 'logo' %>
+	<%= submit_tag('Upload') %>
+<% end %>

config/routes.rb

@@ -588,6 +588,8 @@ RedmineApp::Application.routes.draw do
   post 'school/search_school/', :to => 'school#search_school'
   get 'school/search_school/', :to => 'school#search_school'
   
+  post 'school/upload', :to => 'school#upload'
+  
   ######added by nie
   match 'tags/show_projects_tags',:to => 'tags#show_projects_tags'
   ########### added by liuping