feat(ReferenceOnListView): load last added bibsononmy title in form

This commit adds a small javascript snipplet to the
`reference_list.html` template which autofills the bibsonomy forms
`bibs_url` field with the data from the last added bibsonomy.

apis_bibsonomy/templates/apis_bibsonomy/partials/autofill_bibsonomy.html

@@ -0,0 +1,18 @@
+{% comment %}
+iterate through the `last_bibsonomy_reference` that is set in
+the session and use it to fill out the `bibs_url` form field
+{% endcomment %}
+<script>
+function autoFillBibsonomyForm() {
+  {% spaceless %}
+  {% for field, value in request.session.last_bibsonomy_reference.items %}
+  {% if field == "bibs_url" %}
+  var newOption = new Option("{{ request.session.last_bibsonomy_reference_title }}", "{{ value }}", true, true);
+  $("#id_{{ field }}").append(newOption).trigger("change");
+  {% endif %}
+  {% endfor %}
+  {% endspaceless %}
+}
+document.body.onload = autoFillBibsonomyForm();
+</script>
+

apis_bibsonomy/templates/apis_bibsonomy/partials/reference_list.html

@@ -30,4 +30,5 @@
 </script>
 {% include "apis_bibsonomy/partials/reinit_select2.html" %}
 {% include "apis_bibsonomy/partials/fix_select2_bootstrap_focus.html" %}
+{% include "apis_bibsonomy/partials/autofill_bibsonomy.html" %}
 </div>

apis_bibsonomy/views.py

@@ -63,6 +63,12 @@ def get_success_url(self):
 
     def form_valid(self, form):
         args = form.cleaned_data
+        # we store the data about the last entered entry in the session
+        # so we can automatically fill the form with the last reference
+        self.request.session["last_bibsonomy_reference"] = form.cleaned_data.copy()
+        ref = Reference.objects.filter(bibs_url=form.cleaned_data['bibs_url']).order_by("last_update").first()
+        self.request.session["last_bibsonomy_reference_title"] = ref.bibtexjson.get("title")
+
         args['content_type'] = ContentType.objects.get_for_id(self.request.resolver_match.kwargs['contenttype'])
         args['object_id'] = self.request.resolver_match.kwargs['pk']
         ref = Reference.objects.create(**args)