提交后的问卷禁止查看与编辑

app/controllers/poll_controller.rb

@@ -1,5 +1,5 @@
 class PollController < ApplicationController
-  before_filter :find_poll_and_course, :only => [:edit,:update,:destroy,:show,:statistics_result,:create_poll_question,:commit_poll]
+  before_filter :find_poll_and_course, :only => [:edit,:update,:destroy,:show,:statistics_result,:create_poll_question,:commit_poll,:commit_answer]
   before_filter :find_container, :only => [:new,:create, :index]
   before_filter :is_member_of_course, :only => [:index,:show]
   before_filter :is_course_teacher, :only => [:new,:create,:edit,:update,:destroy]
@@ -19,12 +19,18 @@ class PollController < ApplicationController
 
   def show
     @poll = Poll.find params[:id]
+    #已提交问卷的用户不能再访问该界面
+    if has_commit_poll?(@poll.id,User.current.id) && (!User.current.admin?)
+      render_403
+    else
+      @can_edit_poll = (!has_commit_poll?(@poll.id,User.current.id)) || User.current.admin?
       poll_questions = @poll.poll_questions
       @poll_questions = paginateHelper poll_questions,3 #分页
       respond_to do |format|
         format.html {render :layout => 'base_courses'}
       end
     end
+  end
 
   def new
     if @course
@@ -141,6 +147,10 @@ class PollController < ApplicationController
   #提交答案
   def commit_answer
     pq = PollQuestion.find(params[:poll_question_id])
+    if has_commit_poll?(@poll.id,User.current.id) && (!User.current.admin?)
+      render :text => 'failure'
+      return
+    end
     if pq.question_type == 1
       #单选题
       pv = PollVote.find_by_poll_question_id_and_user_id(params[:poll_question_id],User.current.id)
@@ -188,15 +198,8 @@ class PollController < ApplicationController
         render :text => "failure"
       end
     else
-
+      render :text => "failure"
     end
-
-
-    #respond_to do |format|
-    #  format.js
-    #  format.json
-    #end
-
   end
 
   #提交问卷

app/helpers/poll_helper.rb

@@ -37,4 +37,14 @@ module PollHelper
       pv.vote_text
     end
   end
+
+  #判断用户是否已经提交了问卷
+  def has_commit_poll?(poll_id,user_id)
+    pu = PollUser.find_by_poll_id_and_user_id(poll_id,user_id)
+    if pu.nil?
+      false
+    else
+      true
+    end
+  end
 end

app/views/poll/index.html.erb

@@ -13,7 +13,11 @@
     <% @polls.each do |poll|%>
         <ul id="polls_<%= poll.id %>">
           <li>
+            <% if has_commit_poll?(poll.id ,User.current) %>
+                <sapn class="polls_title fl"> <%= poll.polls_name %></sapn>
+            <% else %>
               <%= link_to poll.polls_name, poll_path(poll.id), :class => "polls_title fl" %>
+            <% end %>
           </li>
           <li>
             <%if @is_teacher%>

app/views/poll/show.html.erb

@@ -77,7 +77,7 @@
                                       });
                                   }
                               </script>
-                              <%= radio_button "poll_vote","poll_answer_id",pa.id,:class=>"ur_radio",:onclick =>"click_#{pa.id}(this);return false;",:checked => answer_be_selected?(pa,User.current)  %>
+                              <%= radio_button "poll_vote","poll_answer_id",pa.id,:class=>"ur_radio",:onclick =>"click_#{pa.id}(this);return false;",:checked => answer_be_selected?(pa,User.current),:disabled => !@can_edit_poll %>
                               <%= pa.answer_text %>
                             </label>
                           </td>
@@ -130,7 +130,7 @@
                                         });
                                     }
                                 </script>
-                                <input class="ur_checkbox" type="checkbox" onclick="click_<%= pa.id %>(this);return false;" <%= answer_be_selected?(pa,User.current) ? "checked":"" %>>
+                                <input class="ur_checkbox" type="checkbox" onclick="click_<%= pa.id %>(this);return false;" <%= answer_be_selected?(pa,User.current) ? "checked":"" %> <%= @can_edit_poll?"":"disabled=disabled" %> >
                                 <%= pa.answer_text %>
                               </label>
                             </td>
@@ -171,7 +171,7 @@
 
                       }
                   </script>
-                  <input class="ur_text ur_textbox" type="text" size="" maxlength="" value="<%= get_anwser_vote_text(pq.id,User.current.id) %>" onblur="onblur_<%= pq.id %>(this);">
+                  <input class="ur_text ur_textbox" type="text" size="" maxlength="" value="<%= get_anwser_vote_text(pq.id,User.current.id) %>" onblur="onblur_<%= pq.id %>(this);" <%= @can_edit_poll?"":"disabled=disabled" %>>
                 </div>
               </li><!--单行输入 end-->
           <% elsif pq.question_type == 4 %>
@@ -203,7 +203,7 @@
                             });
                         }
                     </script>
-                    <div contenteditable='true' class="ur_textbox" style="min-height: 150px;width: 100%" onblur="onblur_<%= pq.id %>(this);"><%= get_anwser_vote_text(pq.id,User.current.id) %></div>
+                    <div contenteditable='<%= @can_edit_poll %>' class="ur_textbox" style="min-height: 150px;width: 100%;<%= @can_edit_poll?"":"background-color:#DCDCDC;" %>" onblur="onblur_<%= pq.id %>(this);"><%= get_anwser_vote_text(pq.id,User.current.id) %></div>
                   </div>
                 </div>
               </li><!--多行输入 end-->

public/stylesheets/polls.css

@@ -27,6 +27,7 @@ a.newbtn{ float:right; display:block; width:80px; height:30px; background:#64bdd
 a:hover.newbtn{ background:#55a1b9; text-decoration:none;}
 .polls_list ul{ padding-left:10px; border-bottom:1px dashed #c9c9c9; height:32px; padding-top:8px;}
 a.polls_title{ font-weight:bold; color:#3e6d8e;}
+.polls_title{ font-weight:bold; color:#3e6d8e;}
 a.pollsbtn{ display:block; width:66px; height:22px; text-align:center; border:1px solid #64bdd9; color:#64bdd9;}
 a:hover.pollsbtn{ background:#64bdd9; color:#fff; text-decoration:none;}
 .polls_date{  color:#666666;}