[FIX] avoid crash when there is 0 pages for surveys

bzr revid: rim@openerp.com-20140410143018-yk0xvelpiuh8bau2

addons/survey/controllers/main.py

@@ -52,6 +52,10 @@ class WebsiteSurvey(http.Controller):
         if survey.stage_id.closed:
             return request.website.render("survey.notopen")
 
+        # If there is no pages
+        if not survey.page_ids:
+            return request.website.render("survey.nopages")
+
         # Everything seems to be ok
         return None
 

addons/survey/views/survey_templates.xml

@@ -31,6 +31,20 @@
         </t>
     </template>
 
+    <!-- Message when the survey has no pages  -->
+    <template id="nopages" name="Survey has no pages">
+        <t t-call="website.layout">
+            <div class="wrap">
+                <div class="container">
+                    <div class="jumbotron mt32">
+                        <h1>Not ready</h1>
+                        <p>This survey has no pages by now!</p>
+                    </div>
+                </div>
+            </div>
+        </t>
+    </template>
+
     <!-- First page of a survey -->
     <template id="survey_init" name="Survey">
         <t t-call="website.layout">