Manage display of book covers

front/src/CoverUpload.vue

@@ -2,6 +2,7 @@
   import { ref, computed } from 'vue'
   import { postImage } from './api.js'
 
+  const emit = defineEmits(['OnImageUpload'])
   const props = defineProps({
     name: String
   });
@@ -12,10 +13,15 @@
   function onFileChanged(e) {
     postImage(e.target.files[0])
       .then((res) => res.json())
-      .then((json) => (imagePath.value = json["filepath"]))
+      .then((json) => onJsonResult(json))
       .catch((err) => (error.value = err["error"]));
   }
 
+  function onJsonResult(json) {
+    imagePath.value = json["filepath"];
+    emit('OnImageUpload', json["fileId"])
+  }
+
   function unsetImage() {
     imagePath.value = null;
   }