fix bugs

app/service/course/institution.js

@@ -133,8 +133,22 @@ class InstitutionService extends Service {
 
         //处理图片
         const photo_album = [];
+        let photo_check = []; // 去重
         for (let i in institution_images) {
             const institution_image = institution_images[i];
+            if (institution_image.is_video > 0) {
+                if (photo_check.includes(institution_image.video_url)) {
+                    continue;
+                } else {
+                    photo_check.push(institution_image.video_url);
+                }
+            } else {
+                if (photo_check.includes(institution_image.image_url)) {
+                    continue;
+                } else {
+                    photo_check.push(institution_image.image_url);
+                }
+            }
             photo_album.push({
                 image: institution_image.image_url,
                 is_video: institution_image.is_video,
@@ -409,6 +423,10 @@ class InstitutionService extends Service {
         for (let j in institutions) {
             const institution = institutions[j];
             p_institution_images[j] = ctx.classModel.CourseImages.one({ where: { type: 1, type_id: institution.id, is_cover: 1, is_video: 0 } });
+            //取不到封面图就从详情图列表里选一张
+            if (ctx.isEmpty(p_institution_images[j])) {
+                p_institution_images[j] = ctx.classModel.CourseImages.one({ where: { type: 1, type_id: institution.id, is_cover: 0, is_video: 0 } });
+            }
         }
         const institution_images = await Promise.all(p_institution_images).then(result => {//等待所有异步内容获取完成
             return result;