Add complete revision and history handling in the wiki

core/migrations/0013_auto_20151202_0814.py

+# -*- coding: utf-8 -*-
+from __future__ import unicode_literals
+
+from django.db import migrations, models
+from django.conf import settings
+
+
+class Migration(migrations.Migration):
+
+    dependencies = [
+        ('core', '0012_auto_20151127_1504'),
+    ]
+
+    operations = [
+        migrations.CreateModel(
+            name='PageRev',
+            fields=[
+                ('id', models.AutoField(primary_key=True, auto_created=True, serialize=False, verbose_name='ID')),
+                ('title', models.CharField(max_length=255, blank=True, verbose_name='page title')),
+                ('content', models.TextField(blank=True, verbose_name='page content')),
+                ('date', models.DateTimeField(auto_now=True, verbose_name='date')),
+                ('author', models.ForeignKey(to=settings.AUTH_USER_MODEL, related_name='page_rev')),
+            ],
+            options={
+                'ordering': ['date'],
+            },
+        ),
+        migrations.RemoveField(
+            model_name='page',
+            name='content',
+        ),
+        migrations.RemoveField(
+            model_name='page',
+            name='title',
+        ),
+        migrations.AddField(
+            model_name='pagerev',
+            name='page',
+            field=models.ForeignKey(to='core.Page', related_name='revisions'),
+        ),
+    ]

core/migrations/0014_remove_page_revision.py

+# -*- coding: utf-8 -*-
+from __future__ import unicode_literals
+
+from django.db import migrations, models
+
+
+class Migration(migrations.Migration):
+
+    dependencies = [
+        ('core', '0013_auto_20151202_0814'),
+    ]
+
+    operations = [
+        migrations.RemoveField(
+            model_name='page',
+            name='revision',
+        ),
+    ]

core/models.py

@@ -151,10 +151,6 @@ class Page(GroupManagedObject, models.Model):
     query, but don't rely on it when playing with a Page object, use get_full_name() instead!
     """
     name = models.CharField(_('page name'), max_length=30, blank=False)
-# TODO: move title and content to PageRev class with a OneToOne field
-    title = models.CharField(_("page title"), max_length=255, blank=True)
-    content = models.TextField(_("page content"), blank=True)
-    revision = models.PositiveIntegerField(_("current revision"), default=1)
     is_locked = models.BooleanField(_("page mutex"), default=False)
     parent = models.ForeignKey('self', related_name="children", null=True, blank=True, on_delete=models.SET_NULL)
     # Attention: this field may not be valid until you call save(). It's made for fast query, but don't rely on it when
@@ -237,4 +233,23 @@ class Page(GroupManagedObject, models.Model):
     def get_display_name(self):
         return self.get_full_name()
 
+class PageRev(models.Model):
+    title = models.CharField(_("page title"), max_length=255, blank=True)
+    content = models.TextField(_("page content"), blank=True)
+    date = models.DateTimeField(_('date'), auto_now=True)
+    author = models.ForeignKey(User, related_name='page_rev')
+    page = models.ForeignKey(Page, related_name='revisions')
+
+    class Meta:
+        ordering = ['date',]
+
+    def get_absolute_url(self):
+        """
+        This is needed for black magic powered UpdateView's children
+        """
+        return reverse('core:page', kwargs={'page_name': self.page.full_name})
+
+    def __str__(self):
+        return str(self.__dict__)
+
 

core/templates/core/page_detail.html

@@ -7,9 +7,16 @@
         <p><a href="{% url 'core:page_edit' page.get_full_name %}">Edit</a></p>
         <p><a href="{% url 'core:page_prop' page.get_full_name %}">Prop</a></p>
     {% endif %}
-    <p>You're seeing the page <strong>{{ page.get_display_name }}</strong></p>
-    <h3>{{ page.title }}</h3>
-    <p>{{ page.content }}</p>
+    <p>You're seeing the page <strong>{{ page.get_display_name }}</strong> -
+    <a href="{% url 'core:page_hist' page.get_full_name %}">History</a></p>
+    {% if rev %}
+        <h4>This may not be the last update, you are seeing revision {{ rev.id }}!</h4>
+        <h3>{{ rev.title }}</h3>
+        <p>{{ rev.content }}</p>
+    {% else %}
+        <h3>{{ page.revisions.last.title }}</h3>
+        <p>{{ page.revisions.last.content }}</p>
+    {% endif %}
 {% endblock %}
 
 

core/templates/core/page_hist.html

+{% extends "core/page.html" %}
+
+{% block page %}
+    <h3>Page history</h3>
+    <p><a href="{% url 'core:page' page.get_full_name %}">Back to page</a></p>
+    <p>You're seeing the history of page <strong>{{ page.get_display_name }}</strong></p>
+    <ul>
+        <li><a href="{% url 'core:page' page_name=page.get_full_name %}">
+            last - {{ page.revisions.last.author }} - {{ page.revisions.last.date }}</a></li>
+        {% for r in page.revisions.all|dictsortreversed:'date'|slice:'1:' %}
+        <li><a href="{% url 'core:page_rev' page_name=page.get_full_name rev=r.id %}">
+            {{ r.author }} - {{ r.date }}</a></li>
+        {% endfor %}
+    </ul>
+{% endblock %}
+
+
+
+

core/urls.py

@@ -24,9 +24,12 @@ urlpatterns = [
     url(r'^user/(?P<user_id>[0-9]+)/$', UserView.as_view(), name='user_profile'),
     url(r'^user/(?P<user_id>[0-9]+)/edit$', UserUpdateProfileView.as_view(), name='user_edit'),
     url(r'^user/(?P<user_id>[0-9]+)/groups$', UserUpdateGroupsView.as_view(), name='user_groups'),
+
     url(r'^page/$', PageListView.as_view(), name='page_list'),
-    url(r'^page/(?P<page_name>[a-z0-9/]*)/$', PageView.as_view(), name='page'),
     url(r'^page/(?P<page_name>[a-z0-9/]*)/edit$', PageEditView.as_view(), name='page_edit'),
     url(r'^page/(?P<page_name>[a-z0-9/]*)/prop$', PagePropView.as_view(), name='page_prop'),
+    url(r'^page/(?P<page_name>[a-z0-9/]*)/hist$', PageHistView.as_view(), name='page_hist'),
+    url(r'^page/(?P<page_name>[a-z0-9/]*)/rev/(?P<rev>[0-9]+)/', PageRevView.as_view(), name='page_rev'),
+    url(r'^page/(?P<page_name>[a-z0-9/]*)/$', PageView.as_view(), name='page'),
 ]
 

core/views/page.py

@@ -5,7 +5,7 @@ from django.views.generic.edit import UpdateView
 from django.contrib.auth.decorators import login_required, permission_required
 from django.utils.decorators import method_decorator
 
-from core.models import Page
+from core.models import Page, PageRev
 from core.views.forms import PagePropForm
 from core.views import CanViewMixin, CanEditMixin, CanEditPropMixin
 
@@ -16,21 +16,6 @@ class PageListView(ListView):
         context = super(PageListView, self).get_context_data(**kwargs)
         return context
 
-# Define some right management callable for user_passes_test
-def user_can_view(as_view):
-    def guy(*arg, **kwargs):
-        res = self.as_view(*arg, **kwargs)
-
-        user = self.request.user
-        obj = self.page
-        for g in obj.view_group.all():
-            if g in user.groups.all():
-                print("Allowed")
-                return res
-        print("Not allowed")
-        return res
-    return guy
-
 class PageView(CanViewMixin, DetailView):
     model = Page
 
@@ -40,10 +25,37 @@ class PageView(CanViewMixin, DetailView):
 
     def get_context_data(self, **kwargs):
         context = super(PageView, self).get_context_data(**kwargs)
-        if "page" in context.keys():
-            context['tests'] = "PAGE_FOUND : "+context['page'].title
+        if "page" not in context.keys():
+            context['new_page'] = self.kwargs['page_name']
+        return context
+
+class PageHistView(CanViewMixin, DetailView):
+    model = Page
+    template_name_suffix = '_hist'
+
+    def get_object(self):
+        self.page = Page.get_page_by_full_name(self.kwargs['page_name'])
+        return self.page
+
+class PageRevView(CanViewMixin, DetailView):
+    model = Page
+    template_name = 'core/page_detail.html'
+
+    def get_object(self):
+        self.page = Page.get_page_by_full_name(self.kwargs['page_name'])
+        return self.page
+
+    def get_context_data(self, **kwargs):
+        context = super(PageRevView, self).get_context_data(**kwargs)
+        if self.page is not None:
+            context['page'] = self.page
+            try:
+                rev = self.page.revisions.get(id=self.kwargs['rev'])
+                context['rev'] = rev
+            except:
+            # By passing, the template will just display the normal page without taking revision into account
+                pass
         else:
-            context['tests'] = "PAGE_NOT_FOUND"
             context['new_page'] = self.kwargs['page_name']
         return context
 
@@ -69,28 +81,46 @@ class PagePropView(CanEditPropMixin, UpdateView):
 
     def get_context_data(self, **kwargs):
         context = super(PagePropView, self).get_context_data(**kwargs)
-        if "page" in context.keys():
-            context['tests'] = "PAGE_FOUND : "+context['page'].title
-        else:
-            context['tests'] = "PAGE_NOT_FOUND"
+        if "page" not in context.keys():
             context['new_page'] = self.kwargs['page_name']
         return context
 
 class PageEditView(CanEditMixin, UpdateView):
-    model = Page
+    model = PageRev
     fields = ['title', 'content',]
     template_name_suffix = '_edit'
 
     def get_object(self):
         self.page = Page.get_page_by_full_name(self.kwargs['page_name'])
-        return self.page
+        if self.page is not None:
+            # First edit
+            if self.page.revisions.all() is None:
+                rev = PageRev(author=request.user)
+                rev.save()
+                self.page.revisions.add(rev)
+            return self.page.revisions.all().last()
+        return None
 
     def get_context_data(self, **kwargs):
         context = super(PageEditView, self).get_context_data(**kwargs)
-        if "page" in context.keys():
-            context['tests'] = "PAGE_FOUND : "+context['page'].title
+        if self.page is not None:
+            context['page'] = self.page
         else:
-            context['tests'] = "PAGE_NOT_FOUND"
             context['new_page'] = self.kwargs['page_name']
         return context
 
+    def form_valid(self, form):
+        form.instance.author = self.request.user
+        form.instance.page = self.page
+        rev = form.instance
+        new_rev = PageRev(title=rev.title,
+                          content=rev.content,
+                          )
+        new_rev.author = self.request.user
+        new_rev.page = self.page
+        print(form.instance)
+        new_rev.save()
+        form.instance = new_rev
+        print(form.instance)
+        return super(PageEditView, self).form_valid(form)
+