fix class filter bug

app/service/course/v5/report.js

@@ -332,25 +332,25 @@ class ReportService extends Service {
         if (v.column_type === 1) { // 课程字段
           switch (v.column) {
             case 'filter_price':
-              where.filter_price = await this.getOptionValue(v);
+              where.filter_price = ctx.isEmpty(where.filter_price) ? await this.getOptionValue(v) : Object.assign({}, where.filter_price, await this.getOptionValue(v));
               break;
             case 'price_type':
-              where.price_type = await this.getOptionValue(v);
+              where.price_type = ctx.isEmpty(where.price_type) ? await this.getOptionValue(v) : Object.assign({}, where.price_type, await this.getOptionValue(v));
               break;
             case 'mode':
-              where.mode = await this.getOptionValue(v);
+              where.mode = ctx.isEmpty(where.mode) ? await this.getOptionValue(v) : Object.assign({}, where.mode, await this.getOptionValue(v));
               break;
             case 'time':
-              where.time = await this.getOptionValue(v);
+              where.time = ctx.isEmpty(where.time) ? await this.getOptionValue(v) : Object.assign({}, where.time, await this.getOptionValue(v));
               break;
             case 'class_amount':
-              where.class_amount = await this.getOptionValue(v);
+              where.class_amount = ctx.isEmpty(where.class_amount) ? await this.getOptionValue(v) : Object.assign({}, where.class_amount, await this.getOptionValue(v));
               break;
             case 'multi_classes':
-              where.multi_classes = await this.getOptionValue(v);
+              where.multi_classes = ctx.isEmpty(where.multi_classes) ? await this.getOptionValue(v) : Object.assign({}, where.multi_classes, await this.getOptionValue(v));
               break;
             case 'cycle':
-              where.cycle = await this.getOptionValue(v);
+              where.cycle = ctx.isEmpty(where.cycle) ? await this.getOptionValue(v) : Object.assign({}, where.cycle, await this.getOptionValue(v));
               break;
             case 'type':
               tmpFilter = { where: { type_id: await this.getOptionValue(v), status: 1, is_deleted: 0 }, attributes: [ 'class_id' ] };