add unlike

app/controller/course/v3/institution.js

@@ -180,6 +180,18 @@ class InstitutionController extends Controller {
     const ret = await service.course.v3.institution.like(inputParams);
     ctx.success(ret);
   }
+
+  // 取消点赞
+  async unlike() {
+    const { ctx, service } = this;
+    const inputParams = ctx.request.body;
+    if (ctx.isEmpty(inputParams) || ctx.isEmpty(inputParams.type) || ctx.isEmpty(inputParams.type_id)) {
+      ctx.failed('参数错误');
+    }
+
+    const ret = await service.course.v3.institution.unlike(inputParams);
+    ctx.success(ret);
+  }
 }
 
 module.exports = InstitutionController;

app/router/course_v3.js

@@ -44,5 +44,6 @@ module.exports = app => {
   router.get('third', '/article/:id', miniAuth, 'course.v3.institution.getArticle');// 获取选课指南详情
 
   router.post('third', '/like', miniAuth, 'course.v3.institution.like');// 点赞
+  router.post('third', '/unlike', miniAuth, 'course.v3.institution.unlike');// 取消点赞
 
 };

app/service/course/v3/institution.js

@@ -744,6 +744,40 @@ class InstitutionSubService extends Service {
     return;
   }
 
+  //取消点赞
+  async unlike(input) {
+    const { ctx } = this;
+    const type = Number(input.type) || 0;
+    const typeId = Number(input.type_id) || 0;
+    let tmp = {};
+
+    if (type === 0 || typeId === 0) {
+      ctx.failed('参数异常');
+    }
+
+    // 是否重复点赞
+    const userLike = await ctx.classModel.V3.CourseLike.findOne({ where: { user_uuid: ctx.userUuid, type, type_id: typeId, is_deleted: 0 } });
+    if (ctx.isEmpty(userLike)) {
+      ctx.failed('尚未点赞');
+    }
+
+    // 校验点赞对象是否存在
+    switch (type) {
+      case 1:
+        tmp = await ctx.classModel.V3.CourseArticle.findOne({ where: { id: typeId, status: 'online', is_deleted: 0 } });
+        if (ctx.isEmpty(tmp)) {
+          ctx.failed('数据不存在');
+        }
+        // 更新点赞数
+        await ctx.classModel.V3.CourseArticle.update({ read_count: sequelize.literal('`read_count` - 1') }, { where: { id: typeId } });
+        break;
+      default:
+        break;
+    }
+
+    await ctx.classModel.V3.CourseLike.update({ is_deleted: 1 }, {where:{id: userLike.id}});
+    return;
+  }
 }
 
 module.exports = InstitutionSubService;