Avoid losing user data when a sidebar form is called and article contents have been modified #33

wiki/core/plugins/base.py

@@ -9,6 +9,7 @@ from django.utils.translation import ugettext as _
 Please have a look in wiki.models.pluginbase to see where to inherit your
 plugin's models.
 """
+from django import forms
 
 class BasePlugin(object):
     """Plugins should inherit from this"""
@@ -35,8 +36,13 @@ class BasePlugin(object):
         js = []
         css = {}
 
-class PluginSidebarFormMixin(object):
-
+class PluginSidebarFormMixin(forms.ModelForm):
+    
+    unsaved_article_title = forms.CharField(widget=forms.HiddenInput(),
+                                            required=True)
+    unsaved_article_content = forms.CharField(widget=forms.HiddenInput(),
+                                              required=False)
+    
     def get_usermessage(self):
         pass
 

wiki/plugins/images/forms.py

@@ -5,7 +5,7 @@ from wiki.core.plugins.base import PluginSidebarFormMixin
 from wiki.plugins.images import models
 
 
-class SidebarForm(forms.ModelForm, PluginSidebarFormMixin):
+class SidebarForm(PluginSidebarFormMixin):
     
     def __init__(self, article, request, *args, **kwargs):
         self.article = article

wiki/plugins/images/templates/wiki/plugins/images/sidebar.html

@@ -13,6 +13,16 @@ function insert_image(image_id) {
     $('#id_content').insertAtCaret(imagetag+'\n\n');  
   }
 }
+
+$(document).ready( function() {
+  $('.sidebar-form').each(function () {
+    $(this).submit( function() {
+      this.unsaved_article_title.value = $('#id_title').val();
+      this.unsaved_article_content.value = $('#id_content').val();
+    });
+  });
+});
+
 </script>
 {% endaddtoblock %}
 
@@ -72,22 +82,27 @@ function insert_image(image_id) {
     {% endfor %}
   {% endif %}
 
-  {% for field in form %}
-  <fieldset id="div_{{ field.auto_id }}" class="control-group fields {% if field.errors %} error{% endif %}">
-    {% if field.label %}
-      <!--<label for="{{ field.id_for_label }}" class="{% if field.field.required %}requiredField{% endif %}">
-      {{ field.label|safe }}
-      </label>-->
-    {% endif %}
-    {{ field }}
-    {% if field.errors %}
-    <div id="error_{{ forloop.counter }}_{{ field.auto_id }}" class="help-block">
-      {% for error in field.errors %}
-      <div>{{ error }}</div>
-      {% endfor %}
-    </div>
-    {% endif %}
-  </fieldset>
+  {# Include the hidden fields #}
+  {% for hidden in form.hidden_fields %}
+    {{ hidden }}
+  {% endfor %}
+
+  {% for field in form.visible_fields %}
+    <fieldset id="div_{{ field.auto_id }}" class="control-group fields {% if field.errors %} error{% endif %}">
+      {% if field.label %}
+        <!--<label for="{{ field.id_for_label }}" class="{% if field.field.required %}requiredField{% endif %}">
+        {{ field.label|safe }}
+        </label>-->
+      {% endif %}
+      {{ field }}
+      {% if field.errors %}
+      <div id="error_{{ forloop.counter }}_{{ field.auto_id }}" class="help-block">
+        {% for error in field.errors %}
+        <div>{{ error }}</div>
+        {% endfor %}
+      </div>
+      {% endif %}
+    </fieldset>
     {% if field.help_text %}
       <p id="hint_{{ field.auto_id }}" class="help-block">{{ field.help_text|safe }}</p>
     {% endif %}

wiki/templates/wiki/includes/editor_sidebar.html

@@ -14,7 +14,7 @@
       <div class="accordion-inner form-vertical">
         {% if plugin.sidebar.template %}
           {% with plugin_form as form and plugin as plugin %}
-            <form method="POST" class="form-horizontal" action="?f={{ plugin_form.form_id }}" enctype="multipart/form-data">
+            <form method="POST" class="form-horizontal sidebar-form" action="?f={{ plugin_form.form_id }}" enctype="multipart/form-data">
               {% csrf_token %}
               {% include plugin.sidebar.template %}
             </form>

wiki/views/article.py

@@ -219,6 +219,17 @@ class Edit(FormView, ArticleMixin):
         self.sidebar = []
         return super(Edit, self).dispatch(request, article, *args, **kwargs)
     
+    def get_initial(self):
+        initial = FormView.get_initial(self)
+        
+        for field_name in ['title', 'content']:
+            session_key = 'unsaved_article_%s_%d' % (field_name, self.article.id)
+            if session_key in self.request.session.keys():
+                content = self.request.session[session_key]
+                initial[field_name] = content
+                del self.request.session[session_key]
+        return initial
+    
     def get_form(self, form_class):
         """
         Checks from querystring data that the edit form is actually being saved,
@@ -266,9 +277,16 @@ class Edit(FormView, ArticleMixin):
                             messages.success(self.request, usermessage)
                         else:
                             messages.success(self.request, _(u'Your changes were saved.'))
+                        
+                        request.session['unsaved_article_title_%d' % self.article.id] = form.cleaned_data['unsaved_article_title']
+                        request.session['unsaved_article_content_%d' % self.article.id] = form.cleaned_data['unsaved_article_content']
+                        
+                        messages.warning(request, _('Please note that your article text has not yet been saved!'))
+                        
                         if self.urlpath:
                             return redirect('wiki:edit', path=self.urlpath.path)
                         return redirect('wiki:edit', article_id=self.article.id)
+                        
                 else:
                     form = Form(self.article, self.request)
                 setattr(form, 'form_id', form_id)