Closes #3810: Preserve slug value when editing existing objects

netbox/utilities/forms.py

@@ -132,6 +132,13 @@ class SmallTextarea(forms.Textarea):
     pass
 
 
+class SlugWidget(forms.TextInput):
+    """
+    Subclass TextInput and add a slug regeneration button next to the form field.
+    """
+    template_name = 'widgets/sluginput.html'
+
+
 class ColorSelect(forms.Select):
     """
     Extends the built-in Select widget to colorize each <option>.
@@ -534,7 +541,8 @@ class SlugField(forms.SlugField):
     def __init__(self, slug_source='name', *args, **kwargs):
         label = kwargs.pop('label', "Slug")
         help_text = kwargs.pop('help_text', "URL-friendly unique shorthand")
-        super().__init__(label=label, help_text=help_text, *args, **kwargs)
+        widget = kwargs.pop('widget', SlugWidget)
+        super().__init__(label=label, help_text=help_text, widget=widget, *args, **kwargs)
         self.widget.attrs['slug-source'] = slug_source
 
 

netbox/utilities/templates/widgets/sluginput.html

@@ -0,0 +1,8 @@
+<div class="input-group">
+    {% include "django/forms/widgets/input.html" %}
+    <span class="input-group-btn">
+        <button class="btn btn-default reslugify" type="button" title="Regenerate slug">
+            <i class="fa fa-refresh"></i>
+        </button>
+    </span>
+</div>