webui: Added template delete support

cloud/urls.py

@@ -33,6 +33,7 @@ urlpatterns = patterns('',
      url(r'^store/gui/$', 'store.views.gui', name='store_gui'),
      url(r'^store/top/$', 'store.views.toplist', name='store_top'),
      url(r'^ajax/templateWizard$', 'one.views.ajax_template_wizard', name='ajax_template_wizard'),
+     url(r'^ajax/template/delete/$', 'one.views.ajax_template_delete', name='ajax_template_delete'),
      url(r'^ajax/template_name_unique/(?P<name>.*)$', 'one.views.ajax_template_name_unique', name='ajax_template_name_unique'),
      url(r'^ajax/store/list$', 'store.views.ajax_listfolder', name='store_ajax_listfolder'),
      url(r'^ajax/store/download$', 'store.views.ajax_download', name='store_ajax_download'),

one/models.py

@@ -14,9 +14,12 @@ from school.models import Person, Group
 from datetime import timedelta as td
 from django.db.models.signals import post_delete, pre_delete
 from store.api import StoreApi
+from django.db import transaction
 
+import logging
 import subprocess, tempfile, os, stat, re, base64, struct
 
+logger = logging.getLogger(__name__)
 pwgen = User.objects.make_random_password
 
 """
@@ -289,6 +292,15 @@ class Template(models.Model):
     def __unicode__(self):
         return self.name
 
+    @transaction.commit_on_success
+    def safe_delete(self):
+        if not self.instance_set.exists():
+            self.delete()
+            return True
+        else:
+            logger.info("Could not delete template. Instances still running!")
+            return False
+
     class Meta:
         verbose_name = _('template')
         verbose_name_plural = _('templates')

one/static/cloud.js

@@ -36,6 +36,9 @@ $(function() {
             $(this).next('.details').slideDown(700);
         }
     }
+    $('.delete-template-button').click(function() {
+        delete_template_confirm($(this).data('id'), $(this).data('name'));
+    });
     $('.wm .summary').unbind('click').click(toggleDetails);
     $('.stop-vm-button').click(function() {
         stop_vm($(this).data('id'), $(this).data('name'));
@@ -172,6 +175,37 @@ $(function() {
             }
         })
     }
+
+    /**
+     * Template delete
+     */
+    function delete_template_confirm(id, name) {
+        confirm_message = interpolate(gettext("Are you sure deleting this %s template?"), [name])
+        vm_confirm_popup(confirm_message, gettext("Delete"), function() {
+            delete_template(id)
+        })
+    }
+    /**
+     * Template delete
+     */
+    function delete_template(id) {
+        $.ajax({
+            type: 'POST',
+            url: '/ajax/template/delete/',
+            data: 'id=' + id,
+            dataType: 'json',
+            statusCode: {
+                404: function(data) {
+                    alert(data['responseText']);
+                },
+                200: function(data) {
+                $("#t"+id).remove()
+            },
+
+            }
+        })
+    }
+
     $('#new-member').click(function() {
         $('#new-member-form').toggle();
     });

one/templates/box-templatelist.html

@@ -4,13 +4,13 @@
         <h2>{% trans "My templates" %}</h2>
         <ul class="wm-list">
             {% for t in mytemplates %}
-            <li class="wm">
+            <li class="wm" id="t{{t.id }}">
                 <div class="summary">
                     <div class="name">{{t.name}}</div>
                     <div class="status">{{t.state}}</div>
                     <div class="actions">
                         <a href="#" title="{% trans "Edit" %}"><img src="/static/icons/pencil.png" alt="{% trans "Edit" %}" /></a>
-                        <a href="#" title="{% trans "Remove" %}"><img src="/static/icons/minus-circle.png" alt="{% trans "Remove" %}" /></a>
+                        <a href="#" class="delete-template-button" data-id="{{ t.id }}" data-name="{{ t.name }}" title="{% trans "Remove" %}"><img src="/static/icons/minus-circle.png" alt="{% trans "Remove" %}" /></a>
                         <a href="#" title="{% trans "Share" %}"><img src="static/icons/user-share.png" alt="{% trans "Share" %}" /></a>
                     </div>
                     <div class="clear"></div>

one/views.py

@@ -81,6 +81,21 @@ def home(request):
         'userdetails': UserCloudDetails.objects.get(user=request.user),
         }))
 
+@login_required
+def ajax_template_delete(request):
+    try:
+        template_id = request.POST['id']
+    except:
+        return HttpResponse(unicode(_("Invalid template ID.")), status=404)
+    template = get_object_or_404(Template, id=template_id)
+    if template.instance_set.exists():
+        return HttpResponse(unicode(_("There are running instances of this template.")), status=404)
+    elif template.share_set.exists():
+        return HttpResponse(unicode(_("Template is still shared.")), status=404)
+    else:
+        template.safe_delete()
+        return HttpResponse(unicode(_("Template succesfully deleted.")))
+
 def ajax_template_name_unique(request, name):
     s = "True"
     if Template.objects.filter(name=name).exists():

store/views.py

@@ -20,7 +20,7 @@ def estabilish_store_user(request, user):
         for key in request.user.sshkey_set.all():
             key_list.append(key.key)
     except:
-        return HttpResponse('Can not acces to django database!', status_code=404)
+        return HttpResponse('Can not acces to django database!', status=404)
         #Create user
     if not StoreApi.createuser(user, password, key_list, str(quota)):
         return HttpResponse('User does not exist on store! And could not create!')
@@ -40,7 +40,7 @@ def index(request):
             for key in request.user.sshkey_set.all():
                 key_list.append(key.key)
         except:
-            return HttpResponse('Can not acces to django database!', status_code=404)
+            return HttpResponse('Can not acces to django database!', status=404)
         if not StoreApi.updateauthorizationinfo(user, password, key_list):
            return HttpResponse('Can not update authorization information!')
     except:
@@ -114,7 +114,7 @@ def ajax_download(request):
         return HttpResponse(json.dumps({'url':StoreApi.requestdownload(user,dl)}))
     except:
         pass
-    return HttpResponse('File not found!', status_code=404)
+    return HttpResponse('File not found!', status=404)
 
 @login_required
 def ajax_upload(request):
@@ -125,7 +125,7 @@ def ajax_upload(request):
         return HttpResponse(json.dumps({'url':url}))
     except:
         pass
-    return HttpResponse('Error!', status_code=404)
+    return HttpResponse('Error!', status=404)
 
 @login_required
 def ajax_delete(request):
@@ -135,7 +135,7 @@ def ajax_delete(request):
         return HttpResponse(json.dumps({'success':StoreApi.requestremove(user,rm)}))
     except:
         pass
-    return HttpResponse('File not found!', status_code=404)
+    return HttpResponse('File not found!', status=404)
 
 @login_required
 def ajax_new_folder(request):
@@ -147,7 +147,7 @@ def ajax_new_folder(request):
         return HttpResponse(json.dumps({'success':success}))
     except:
         pass
-    return HttpResponse('Error!', status_code=404)
+    return HttpResponse('Error!', status=404)
 
 @login_required
 def ajax_rename(request):
@@ -159,7 +159,7 @@ def ajax_rename(request):
         return HttpResponse(json.dumps({'success':success}))
     except:
         pass
-    return HttpResponse('Error!', status_code=404)
+    return HttpResponse('Error!', status=404)
 
 @login_required
 def toplist(request):
@@ -181,7 +181,7 @@ def gui(request):
             for key in request.user.sshkey_set.all():
                 key_list.append(key.key)
         except:
-            return HttpResponse('Can not acces to django database!', status_code=404)
+            return HttpResponse('Can not acces to django database!', status=404)
         try:
             lab_key_decoded = base64.b64decode(request.POST['KEY'])
             key_list.append(lab_key_decoded)
@@ -195,7 +195,7 @@ def gui(request):
         else:
             return HttpResponse('Can not update authorization information!')
     else:
-        return HttpResponse('Method not found!', status_code=404)
+        return HttpResponse('Method not found!', status=404)
 
 def logout(request):
         auth.logout(request)