Show SLM installations on native objects (#61)

Closes #49

Signed-off-by: wkoot <3715211+wkoot@users.noreply.github.com>

netbox_slm/template_content.py

@@ -0,0 +1,36 @@
+from netbox.plugins import PluginTemplateExtension, get_plugin_config
+
+installations = dict(
+    device=get_plugin_config("netbox_slm", "link_device_installations"),
+    cluster=get_plugin_config("netbox_slm", "link_cluster_installations"),
+    virtualmachine=get_plugin_config("netbox_slm", "link_virtualmachine_installations"),
+)
+
+
+class InstallationsCard(PluginTemplateExtension):
+    models = ["dcim.device", "virtualization.cluster", "virtualization.virtualmachine"]
+
+    def get_object_name(self):
+        object_model_meta = self.context["object"]._meta  # one of the self.models defined above
+        return object_model_meta.model_name
+
+    def render_card(self):
+        return self.render(
+            "netbox_slm/installations_card_include.html",
+            extra_context={
+                "search_obj": self.get_object_name(),
+            },
+        )
+
+    def left_page(self):
+        return self.render_card() if installations[self.get_object_name()] == "left" else ""
+
+    def right_page(self):
+        return self.render_card() if installations[self.get_object_name()] == "right" else ""
+
+    def full_width_page(self):
+        return self.render_card() if installations[self.get_object_name()] == "full" else ""
+
+
+# auto imported by default PluginConfig.template_extensions = template_content.template_extensions
+template_extensions = [InstallationsCard]