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1 """ |
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2 Built-in, globally-available admin actions. |
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3 """ |
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4 |
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5 from django import template |
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6 from django.core.exceptions import PermissionDenied |
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7 from django.contrib.admin import helpers |
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8 from django.contrib.admin.util import get_deleted_objects, model_ngettext |
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9 from django.shortcuts import render_to_response |
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10 from django.utils.encoding import force_unicode |
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11 from django.utils.html import escape |
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12 from django.utils.safestring import mark_safe |
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13 from django.utils.text import capfirst |
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14 from django.utils.translation import ugettext_lazy, ugettext as _ |
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15 try: |
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16 set |
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17 except NameError: |
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18 from sets import Set as set # Python 2.3 fallback |
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19 |
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20 def delete_selected(modeladmin, request, queryset): |
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21 """ |
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22 Default action which deletes the selected objects. |
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23 |
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24 This action first displays a confirmation page whichs shows all the |
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25 deleteable objects, or, if the user has no permission one of the related |
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26 childs (foreignkeys), a "permission denied" message. |
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27 |
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28 Next, it delets all selected objects and redirects back to the change list. |
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29 """ |
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30 opts = modeladmin.model._meta |
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31 app_label = opts.app_label |
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32 |
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33 # Check that the user has delete permission for the actual model |
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34 if not modeladmin.has_delete_permission(request): |
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35 raise PermissionDenied |
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36 |
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37 # Populate deletable_objects, a data structure of all related objects that |
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38 # will also be deleted. |
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39 |
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40 # deletable_objects must be a list if we want to use '|unordered_list' in the template |
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41 deletable_objects = [] |
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42 perms_needed = set() |
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43 i = 0 |
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44 for obj in queryset: |
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45 deletable_objects.append([mark_safe(u'%s: <a href="%s/">%s</a>' % (escape(force_unicode(capfirst(opts.verbose_name))), obj.pk, escape(obj))), []]) |
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46 get_deleted_objects(deletable_objects[i], perms_needed, request.user, obj, opts, 1, modeladmin.admin_site, levels_to_root=2) |
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47 i=i+1 |
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48 |
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49 # The user has already confirmed the deletion. |
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50 # Do the deletion and return a None to display the change list view again. |
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51 if request.POST.get('post'): |
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52 if perms_needed: |
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53 raise PermissionDenied |
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54 n = queryset.count() |
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55 if n: |
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56 for obj in queryset: |
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57 obj_display = force_unicode(obj) |
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58 modeladmin.log_deletion(request, obj, obj_display) |
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59 queryset.delete() |
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60 modeladmin.message_user(request, _("Successfully deleted %(count)d %(items)s.") % { |
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61 "count": n, "items": model_ngettext(modeladmin.opts, n) |
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62 }) |
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63 # Return None to display the change list page again. |
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64 return None |
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65 |
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66 context = { |
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67 "title": _("Are you sure?"), |
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68 "object_name": force_unicode(opts.verbose_name), |
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69 "deletable_objects": deletable_objects, |
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70 'queryset': queryset, |
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71 "perms_lacking": perms_needed, |
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72 "opts": opts, |
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73 "root_path": modeladmin.admin_site.root_path, |
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74 "app_label": app_label, |
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75 'action_checkbox_name': helpers.ACTION_CHECKBOX_NAME, |
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76 } |
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77 |
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78 # Display the confirmation page |
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79 return render_to_response(modeladmin.delete_confirmation_template or [ |
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80 "admin/%s/%s/delete_selected_confirmation.html" % (app_label, opts.object_name.lower()), |
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81 "admin/%s/delete_selected_confirmation.html" % app_label, |
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82 "admin/delete_selected_confirmation.html" |
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83 ], context, context_instance=template.RequestContext(request)) |
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84 |
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85 delete_selected.short_description = ugettext_lazy("Delete selected %(verbose_name_plural)s") |