1、课程类型ppt只允许上传1个文件

src/views/aiCourse/aiCourse/AiCourseForm.vue

@@ -103,6 +103,7 @@
         <UploadFile
           v-model="formData.acContent"
           :fileType="['ppt', 'pptx']"
+          :limit="1"
           :fileSize="50"
           @upload-progress="handleUploadProgress"
           @upload-start="handleUploadStart"

src/views/bjdx/course/CourseForm.vue

@@ -78,6 +78,7 @@
 
       <el-form-item v-if="formData.courseContentType === 'ppt'" label="课程PPT" prop="courseFilePath">
         <UploadFile v-model="formData.courseFilePath" :fileType="['ppt','pptx']" :fileSize="50"
+                    :limit="1"
                     @upload-progress="handleUploadProgress"
                     @upload-start="handleUploadStart"
                     @upload-complete="handleUploadComplete"/>

src/views/blockly/blockly/BlocklyForm.vue

@@ -89,6 +89,7 @@
 
       <el-form-item v-if="formData.bcContentType === 'ppt'" label="课程PPT" prop="bcContent">
         <UploadFile v-model="formData.bcContent" :fileType="['ppt','pptx']" :fileSize="50"
+                    :limit="1"
                     @upload-progress="handleUploadProgress"
                     @upload-start="handleUploadStart"
                     @upload-complete="handleUploadComplete"/>