collectOnlineClass add image

app/service/course/v4/online.js

@@ -305,15 +305,26 @@ class OnlineService extends Service {
     classTypes = _.groupBy(classTypes, 'class_id');
 
     // 机构
-    const institutionIds = R.pluck('institution_id', classes.rows);
+    const institutionIds = R.pluck('institution_id', classes);
     let institutions = await ctx.classModel.V4.CourseOnlineInstitution.findAll({ where: { id: { $in: institutionIds } }, attributes: [ 'id', 'name', 'logo' ] });
     institutions = _.groupBy(institutions, 'id');
 
+    // 缩略图
+    const imageInfo = await ctx.classModel.V4.CourseImages.findAll({ where: { type: 5, type_id: { $in: classIds }, status: 'online', is_deleted: 0 } });
+    let images = [];
+    for (const v of imageInfo) {
+      const image = v.is_video > 0 ? { url: v.video_url, type: 1 } : { url: v.image_url, type: 0 };
+      image.type_id = v.type_id;
+      images.push(image);
+    }
+    images = _.groupBy(images, 'type_id');
+
     const result = [];
-    for (const v of classes.rows) {
+    for (const v of classes) {
       const tmp = {
         id: v.id,
         name: v.name,
+        images: ctx.isEmpty(images[v.id]) ? [] : images[v.id],
         institution_id: v.institution_id,
         institution_name: ctx.isEmpty(institutions[v.institution_id]) ? '' : institutions[v.institution_id][0].name,
         logo: ctx.isEmpty(institutions[v.institution_id]) ? '' : institutions[v.institution_id][0].logo,