added submit guard to LOA form

ui/src/components/loa/loaForm.vue

@@ -72,8 +72,12 @@ const { handleSubmit, values, resetForm } = useForm({
 })
 
 const formSubmitted = ref(false);
+const submitting = ref(false);
 
 const onSubmit = handleSubmit(async (values) => {
+    //catch double submit
+    if (submitting.value) return;
+    submitting.value = true;
     const out: LOARequest = {
         member_id: values.member_id,
         start_date: values.start_date,
@@ -88,6 +92,7 @@ const onSubmit = handleSubmit(async (values) => {
         userStore.loadUser();
     }
     formSubmitted.value = true;
+    submitting.value = false;
 })
 
 onMounted(async () => {
@@ -325,7 +330,12 @@ const filteredMembers = computed(() => {
                     </VeeField>
                 </div>
                 <div class="flex justify-end">
-                    <Button type="submit">Submit</Button>
+                    <Button type="submit" :disabled="submitting" class="w-35">
+                        <span class="flex items-center gap-2" v-if="submitting">
+                            <Spinner></Spinner> Submitting…
+                        </span>
+                        <span v-else>Submit</span>
+                    </Button>
                 </div>
             </form>
             <div v-else class="flex flex-col  gap-4 py-8 text-left">