add non-form & non-field errors to templates

fmft/formset_tables.py

@@ -33,6 +33,15 @@
 FormMap = Callable[[object], django.forms.Form]
 
 
+class BaseModelFormSet(django.forms.models.BaseModelFormSet):
+    """Extends BaseModelFormSet to add non-form error report suited to formsets displayed in a table"""
+    def all_non_field_errors(self):
+        error_list = self.non_form_errors().copy()
+        for form in self:
+            error_list.extend(form.non_field_errors())
+        return error_list
+
+
 # Queryset: get the paged data used by a bound table
 
 

fmft/templates/fmft/form_non_field_errors_tr.html

@@ -0,0 +1,11 @@
+{# Render any non-field form errors as a table row #}
+{% if form.non_field_errors %}
+    <tr class="form-errors">
+      <td colspan="{% if colspan %}{{ colspan }}{% else %}{{ form.fields|length }}{% endif %}">
+        {% if form_error_title %}<h5>{{ form_error_title }}</h5>{% endif %}
+        <ul>
+            {{ form.non_field_errors|unordered_list }}
+        </ul>
+      </td>
+    </tr>
+{% endif %}

fmft/templates/fmft/tabular_formset.html

@@ -16,6 +16,9 @@
         </thead>
         <tbody>
         {% for form in formset %}
+            {% if form_show_errors and not form.is_extra %}
+                {% include "fmft/form_non_field_errors_tr.html" %}
+            {% endif %}
             <tr>
                 {% for field in form %}
                     <td>{% include 'fmft/form_field.html' %}</td>

fmft/views.py

@@ -83,6 +83,7 @@ class BaseModelFormSetView(
 ):
     """A Base class that emulates formsets.ModelFormSetView, but without its request
     handlers"""
+    formset_class = formset_tables.BaseModelFormSet
 
     pass
 
@@ -140,6 +141,7 @@ class BaseModelFormSetSingleTableMixin(BaseFormSetFactory, tables.SingleTableMix
 
     model = None
     request = None
+    formset_class = formset_tables.BaseModelFormSet
     _table = None
     _formset = None