Pass context to toolbar, add admin object link

Author: davegaeddert

plain-admin/plain/admin/templates/admin/toolbar/button.html

@@ -1,12 +1,21 @@
-{% if request.impersonator is defined %}
-<div class="flex items-center font-light">
-    Impersonating&nbsp;<span class="font-medium">{{ request.user }}</span>
-    <a href="{{ url('admin:impersonate:stop') }}" title="Stop impersonating" class="flex items-center px-1 ml-1 text-red-300 hover:text-white">
-        <svg xmlns="http://www.w3.org/2000/svg" width="16" height="16" fill="currentColor" class="w-4 h-4 bi bi-x-octagon-fill" viewBox="0 0 16 16">
-            <path d="M11.46.146A.5.5 0 0 0 11.107 0H4.893a.5.5 0 0 0-.353.146L.146 4.54A.5.5 0 0 0 0 4.893v6.214a.5.5 0 0 0 .146.353l4.394 4.394a.5.5 0 0 0 .353.146h6.214a.5.5 0 0 0 .353-.146l4.394-4.394a.5.5 0 0 0 .146-.353V4.893a.5.5 0 0 0-.146-.353L11.46.146zm-6.106 4.5L8 7.293l2.646-2.647a.5.5 0 0 1 .708.708L8.707 8l2.647 2.646a.5.5 0 0 1-.708.708L8 8.707l-2.646 2.647a.5.5 0 0 1-.708-.708L7.293 8 4.646 5.354a.5.5 0 1 1 .708-.708z"/>
-        </svg>
+<div class="flex items-center space-x-1">
+    {% if request.impersonator is defined %}
+    <div class="flex items-center font-light">
+        Impersonating&nbsp;<span class="font-medium">{{ request.user }}</span>
+        <a href="{{ url('admin:impersonate:stop') }}" title="Stop impersonating" class="flex items-center px-1 ml-1 text-red-300 hover:text-white">
+            <svg xmlns="http://www.w3.org/2000/svg" width="16" height="16" fill="currentColor" class="w-4 h-4 bi bi-x-octagon-fill" viewBox="0 0 16 16">
+                <path d="M11.46.146A.5.5 0 0 0 11.107 0H4.893a.5.5 0 0 0-.353.146L.146 4.54A.5.5 0 0 0 0 4.893v6.214a.5.5 0 0 0 .146.353l4.394 4.394a.5.5 0 0 0 .353.146h6.214a.5.5 0 0 0 .353-.146l4.394-4.394a.5.5 0 0 0 .146-.353V4.893a.5.5 0 0 0-.146-.353L11.46.146zm-6.106 4.5L8 7.293l2.646-2.647a.5.5 0 0 1 .708.708L8.707 8l2.647 2.646a.5.5 0 0 1-.708.708L8 8.707l-2.646 2.647a.5.5 0 0 1-.708-.708L7.293 8 4.646 5.354a.5.5 0 1 1 .708-.708z"/>
+            </svg>
+        </a>
+    </div>
+    {% endif %}
+
+    <a href="{{ url('admin:index') }}" class="hover:underline">Admin</a>
+
+    {% if object_admin_url %}
+    <span>→</span>
+    <a href="{{ object_admin_url }}" class="hover:underline">
+        {{ object_class_name }}
     </a>
+    {% endif %}
 </div>
-{% endif %}
-
-<a href="{{ url('admin:index') }}" class="hover:underline">Admin</a>

plain-admin/plain/admin/toolbar.py

@@ -1,7 +1,18 @@
 from plain.toolbar import ToolbarItem, register_toolbar_item
 
+from .views.registry import registry
+
 
 @register_toolbar_item
 class AdminToolbarItem(ToolbarItem):
     name = "Admin"
     button_template_name = "admin/toolbar/button.html"
+
+    def get_template_context(self):
+        context = super().get_template_context()
+        # Add admin-specific context for the object if it exists
+        if "object" in context:
+            obj = context["object"]
+            context["object_admin_url"] = registry.get_model_detail_url(obj)
+            context["object_class_name"] = obj.__class__.__name__
+        return context

plain-toolbar/plain/toolbar/templates.py

@@ -10,5 +10,5 @@ class ToolbarExtension(InclusionTagExtension):
     template_name = "toolbar/toolbar.html"
 
     def get_context(self, context, *args, **kwargs):
-        context.vars["toolbar"] = Toolbar(request=context["request"])
+        context.vars["toolbar"] = Toolbar(context=context)
         return context

plain-toolbar/plain/toolbar/toolbar.py

@@ -10,8 +10,9 @@
 
 
 class Toolbar:
-    def __init__(self, request):
-        self.request = request
+    def __init__(self, context):
+        self.context = context
+        self.request = context["request"]
         self.version = settings.APP_VERSION
 
     def should_render(self):
@@ -37,12 +38,12 @@ def request_exception(self):
             return exception
 
     def get_items(self):
-        items = [item(self.request) for item in registry.get_items()]
+        items = [item(self.context) for item in registry.get_items()]
 
         if self.request_exception():
             exception = self.request_exception()
             items = [
-                _ExceptionToolbarItem(self.request, exception),
+                _ExceptionToolbarItem(self.context, exception),
             ] + items
 
         return items
@@ -53,14 +54,14 @@ class ToolbarItem:
     panel_template_name: str = ""
     button_template_name: str = ""
 
-    def __init__(self, request):
-        self.request = request
+    def __init__(self, context):
+        self.context = context
+        self.request = context["request"]
 
     def get_template_context(self):
-        return {
-            "request": self.request,
-            "panel": self,
-        }
+        context = dict(self.context)
+        context["panel"] = self
+        return context
 
     def render_panel(self):
         template = Template(self.panel_template_name)
@@ -79,8 +80,8 @@ class _ExceptionToolbarItem(ToolbarItem):
     panel_template_name = "toolbar/exception.html"
     button_template_name = "toolbar/exception_button.html"
 
-    def __init__(self, request, exception):
-        super().__init__(request)
+    def __init__(self, context, exception):
+        super().__init__(context)
         self.exception = exception
 
     def get_template_context(self):