bug修改

src/pages/system/library/books/detail.vue

     },
 
     submit() {
+      if (!this.formData.CaseId) {
+        this.$set(this.formData, 'CaseId', this.defaultCase)
+      }
       this.$refs.ruleForm.validate(valid => {
         if (valid) {
           if (!this.formData.Price) {

src/pages/system/library/books/list.vue

           :total="pagenum"
           @current-change="pageChange"
         ></el-pagination>
+        <div style="width: 100%;height: 30px;"></div>
       </div>
     </div>
     <el-dialog

src/pages/system/library/books/types/detail.vue

     },
 
     submit() {
+      if (!this.formData.CaseId) {
+        this.$set(this.formData, 'CaseId', this.defaultCase)
+      }
       this.$refs.ruleForm.validate(valid => {
         if (valid) {
           this.updateDetail(this.formData)

src/pages/system/library/books/types/list.vue

           :total="pagenum"
           @current-change="pageChange">
         </el-pagination>
+        <div style="width: 100%;height: 30px;"></div>
       </div>
     </div>
   </div>