乐理知识添加判断逻辑

src/views/prepare-lessons/model/source-knowledge/index.tsx

@@ -1,4 +1,4 @@
-import { defineComponent, nextTick, onMounted, reactive, ref } from 'vue';
+import { computed, defineComponent, nextTick, onMounted, reactive, ref } from 'vue';
 import styles from './index.module.less';
 import {
   NButton,
@@ -39,6 +39,18 @@ export default defineComponent({
       details: {} as any,
       selectCheckboxs: [] as any
     });
+ 
+    const isDisabled = computed(() => {
+      const boxs = state.selectCheckboxs;
+      let flag = false;
+      for (const i in boxs) {
+        if (boxs[i].length > 0) {
+          flag = true;
+          break;
+        }
+      }
+      return !flag;
+    });
 
     const getDetails = async () => {
       show.value = true;
@@ -125,7 +137,6 @@ export default defineComponent({
           );
         }
       }
-
       const result: any[] = [];
       items.forEach(item => {
         result.push({
@@ -366,7 +377,7 @@ export default defineComponent({
           <NButton round onClick={() => emit('close')}>
             取消
           </NButton>
-          <NButton round type="primary" onClick={onSubmit}>
+          <NButton round type="primary" onClick={onSubmit} disabled={isDisabled.value}>
             确认添加
           </NButton>
         </NSpace>