fix institutions order

app/service/course/institution.js

@@ -368,14 +368,14 @@ class InstitutionService extends Service {
             if (lbs.travel_method === 'walking') {
                 travel_tips = `${area_name},距我${distance}km,步行${duration}分钟`;
             }
-            if (distance === 0 && duration === 0) {
+            if (Number(distance) === 0 && Number(duration) === 0) {
                 travel_tips = '暂无法计算出距离';
             }
             // area.distance = distance;
             // area.duration = duration;
             // area.travel_tips = travel_tips;
 
-            institution_area.distance = distance;
+            institution_area.distance = Number(distance) === 0 ? 999999999 : distance;
             institution_area.duration = duration;
             institution_area.travel_tips = travel_tips;
 
@@ -413,7 +413,7 @@ class InstitutionService extends Service {
             ctx.failed(error);
         });
 
-        const ret = [];
+        let ret = [];
         for (let i in institutions) {
             const institution = institutions[i];
             // const course_areas = institution.course_areas;
@@ -448,9 +448,11 @@ class InstitutionService extends Service {
                 area_id: institution.area_id,//校区id TODO
                 travel_tips: institution.travel_tips, //TODO
                 characteristic: institution.characteristic ? institution.characteristic : '',
+                distance: institution.distance,
             });
         }
 
+        ret = _.orderBy(ret, ['distance'], ['asc']);
         return ret;
     }