Helper function to use SplitDateTimeField for datetimes

gas/forms.py

@@ -55,3 +55,26 @@ class UserForm(forms.ModelForm):
             self.save_m2m()
 
         return obj
+
+
+def split_datetime_field(form, field_name):
+    old_field = form.fields[field_name]
+    new_field = forms.SplitDateTimeField(
+        label=old_field.label,
+        label_suffix=old_field.label_suffix,
+        required=old_field.required,
+        help_text=old_field.help_text,
+        initial=old_field.initial,
+        validators=old_field.validators,
+        localize=old_field.localize,
+        disabled=old_field.disabled,
+        input_date_formats=("%Y-%m-%d",),
+        input_time_formats=("%H:%M", "%H:%M:%S"),
+        widget=forms.SplitDateTimeWidget(
+            date_format='%Y-%m-%d',
+            time_format='%H:%M:%S',
+            time_attrs={'placeholder': '00:00'},
+        ),
+    )
+    new_field.widget.widgets[0].input_type = 'date'
+    form.fields[field_name] = new_field

gas/templates/gas/tags/forms/field.html

@@ -5,7 +5,6 @@
     {% if field.errors %} has-error{% endif %}
     ">
     <label for="{{ field.id_for_label }}">{{ field.label }}</label>
-    {% add_widget_attrs field placeholder=field.label %}
     {{ field }}
 
     {% if add_another_url %}

gas/templatetags/form_tags.py

@@ -22,6 +22,11 @@ def base_form_field(field, css=None, container_class='', add_another_url=None, f
     elif isinstance(field.field, forms.DateField):
         field.field.widget.input_type = 'date'
 
+    if isinstance(field.field, forms.SplitDateTimeField):
+        field.field.widget.widgets[1].attrs['placeholder'] = '00:00:00'
+    else:
+        field.field.widget.attrs['placeholder'] = field.label
+
     if field_template is None:
         if isinstance(field.field.widget, forms.CheckboxInput):
             field_template = 'gas/tags/forms/checkbox.html'