2010年5月17日随笔档案 - James

2010年5月17日

1， Client的check url

<%=link_to_remote 'Check Availability',
  :submit   => "signupForm",
  :url => {:controller => 'users', :action => 'check_avaiable' },
  :html => {:class => 'smallText'} %>

2, Controller的action

def check_avaiable
  respond_to do |format|
    format.html { redirect_to '/' }
    format.js
  end
end

3, RJS 文件

代码

exist_user  = User.find_by_username(params[:username])

if exist_user.nil? then
  page.replace_html :check_username, :partial => 'check_avaiable', :locals=>{:check_value => params[:username]}
else
  page.replace_html :check_username, :partial => 'check_not_avaiable', :locals=>{:check_value => params[:username]}
end

exist_email = User.find_by_email(params[:email])

if exist_email.nil? then
  page.replace_html :check_email, :partial => 'check_avaiable', :locals=>{:check_value => params[:email]}
else
  page.replace_html :check_email, :partial => 'check_not_avaiable', :locals=>{:check_value => params[:email]}
end

posted @ 2010-05-16 15:06 James 阅读(19) 评论(0) 编辑

ajax check username available in rails

1, Client

<%=link_to_remote 'Check Availability',
   :submit   => "signupForm",
   :url => {:controller => 'users', :action => 'check_username_avaiable' },
   :update => 'check_username',
   :html => {:class => 'smallText'} %>

注意这里的submit 是Form的ID, update是ajax回来以后要update的DOM的ID

2, server

  def check_username_avaiable
    exist_user = User.find_by_username(params[:username])
    exist_user = 'yes' if params[:username] == 'demo'
    if exist_user.nil? then
      render :partial=>'username_avaiable', :locals => {:username => params[:username]}
    else
      render :partial=>'username_not_avaiable', :locals => {:username => params[:username]}
    end
  end

posted @ 2010-05-16 13:22 James 阅读(19) 评论(0) 编辑

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