fix: block id could be empty sometimes

src/main/frontend/components/block.cljs

@@ -2513,51 +2513,52 @@
                          :or {show-page? true
                               level-limit 3}
                          :as opts}]
-  (let [parents (db/get-block-parents repo block-id (inc level-limit))
-        page (or (db/get-block-page repo block-id) ;; only return for block uuid
-                 (model/query-block-by-uuid block-id)) ;; return page entity when received page uuid
-        page-name (:block/name page)
-        page-original-name (:block/original-name page)
-        show? (or (seq parents) show-page? page-name)
-        parents (if (= page-name (:block/name (first parents)))
-                  (rest parents)
-                  parents)
-        more? (> (count parents) level-limit)
-        parents (if more? (take-last level-limit parents) parents)
-        config (assoc config :breadcrumb? true)]
-    (when show?
-      (let [page-name-props (when show-page?
-                              [page
-                               (page-cp (dissoc config :breadcrumb? true) page)
-                               {:block/name (or page-original-name page-name)}])
-            parents-props (doall
-                           (for [{:block/keys [uuid name content] :as block} parents]
-                             (when-not name ; not page
-                               (let [{:block/keys [title body]} (block/parse-title-and-body
-                                                                 uuid
-                                                                 (:block/format block)
-                                                                 (:block/pre-block? block)
-                                                                 content)
-                                     config (assoc config :block/uuid uuid)]
-                                 [block
-                                  (if (seq title)
-                                    (->elem :span (map-inline config title))
-                                    (->elem :div (markup-elements-cp config body)))]))))
-            breadcrumb (->> (into [] parents-props)
-                            (concat [page-name-props] (when more? [:more]))
-                            (filterv identity)
-                            (map (fn [x] (if (vector? x)
-                                           (let [[block label] x]
-                                             (rum/with-key (breadcrumb-fragment config block label opts) (:block/uuid block)))
-                                           [:span.opacity-70 "⋯"])))
-                            (interpose (breadcrumb-separator)))]
-        [:div.breadcrumb.block-parents.flex-row.flex-1
-         {:class (when (seq breadcrumb)
-                   (str (when-not (:search? config)
-                          " my-2")
-                        (when indent?
-                          " ml-4")))}
-         breadcrumb (when end-separator? (breadcrumb-separator))]))))
+  (when block-id
+    (let [parents (db/get-block-parents repo block-id (inc level-limit))
+          page (or (db/get-block-page repo block-id) ;; only return for block uuid
+                   (model/query-block-by-uuid block-id)) ;; return page entity when received page uuid
+          page-name (:block/name page)
+          page-original-name (:block/original-name page)
+          show? (or (seq parents) show-page? page-name)
+          parents (if (= page-name (:block/name (first parents)))
+                    (rest parents)
+                    parents)
+          more? (> (count parents) level-limit)
+          parents (if more? (take-last level-limit parents) parents)
+          config (assoc config :breadcrumb? true)]
+      (when show?
+        (let [page-name-props (when show-page?
+                                [page
+                                 (page-cp (dissoc config :breadcrumb? true) page)
+                                 {:block/name (or page-original-name page-name)}])
+              parents-props (doall
+                             (for [{:block/keys [uuid name content] :as block} parents]
+                               (when-not name ; not page
+                                 (let [{:block/keys [title body]} (block/parse-title-and-body
+                                                                   uuid
+                                                                   (:block/format block)
+                                                                   (:block/pre-block? block)
+                                                                   content)
+                                       config (assoc config :block/uuid uuid)]
+                                   [block
+                                    (if (seq title)
+                                      (->elem :span (map-inline config title))
+                                      (->elem :div (markup-elements-cp config body)))]))))
+              breadcrumb (->> (into [] parents-props)
+                              (concat [page-name-props] (when more? [:more]))
+                              (filterv identity)
+                              (map (fn [x] (if (vector? x)
+                                             (let [[block label] x]
+                                               (rum/with-key (breadcrumb-fragment config block label opts) (:block/uuid block)))
+                                             [:span.opacity-70 "⋯"])))
+                              (interpose (breadcrumb-separator)))]
+          [:div.breadcrumb.block-parents.flex-row.flex-1
+           {:class (when (seq breadcrumb)
+                     (str (when-not (:search? config)
+                            " my-2")
+                          (when indent?
+                            " ml-4")))}
+           breadcrumb (when end-separator? (breadcrumb-separator))])))))
 
 (defn- block-drag-over
   [event uuid top? block-id *move-to]