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控制器功能Ruby on Rails的,如果電子郵件存在返回成功
def request_invite
if !request.xhr?
render_404
return
end
@invitation = Invite.new(params[:invite])
if @invitation.save
@return = { :error => false, :response => "Thank you" }
else
error_message = '<div class="error_message">' + @invitation.errors.full_messages.map {|error| "<p>#{error}</p>"}.join + "</div>"
@return = { :error => true, :response => error_message }
end
render :json => ActiveSupport::JSON.encode(@return)
end
模型
class Invite < ActiveRecord::Base
validates :email, :presence => true, :uniqueness => true
validates_format_of :email, :with => /^([^@\s]+)@((?:[-a-z0-9]+\.)+[a-z]{2,})$/i
end
這要麼保存到數據庫,並顯示出成功的味精或是否存在拋出一個錯誤...
即使電子郵件已存在於數據庫中,我也想顯示成功消息,因此它不會顯示電子郵件已被添加