Firstsawyou opened a new issue #1798:
URL: https://github.com/apache/apisix-dashboard/issues/1798
# Feature request
## Please describe your feature
When adding a route, Dashboard will add an empty expression of `"vars":{}`
by default:
However, only in the APISIX 2.5 version, APISIX will perform schema
verification on the `"vars":{}` expression in the route. If there is
`"vars":{}` in the route, the following error message will be reported:
```
2021/04/14 14:09:03 [error] 42#42: 1 [lua] config_etcd.lua:230:
load_full_data(): failed to check item data of [/apisix/routes] err:failed to
validate the 'vars' expression: rule too short ,val:
{"uris":["/ecom/"],"vars":{},"hosts":["dev.url","develop.url"],"id":"350417588708180914","update_time":1618401644,"status":1,"create_time":1618394758,"name":"ecom_dev_v2","upstream":{"hash_on":"vars","scheme":"http","type":"roundrobin","timeout":{"read":6000,"connect":6000,"send":6000},"pass_host":"pass","nodes":[{"host":"ecom-edg.development.svc.cluster.local","weight":1,"port":8085,"priority":0}]},"priority":0,"methods":["GET","POST","PUT","DELETE"]},
context: init_worker_by_lua*
```
I see that the community Dashboard 2.6 is ready to be released, which will
be used in conjunction with the APISIX 2.5 version. But I am not sure whether
Dashboard 2.6 will add the empty expression of `"vars":{}` by default when
adding routes. If there is, then it is possible that Dashboard 2.6 and APISIX
2.5 may be used in conjunction with APISIX 2.5, and the above-mentioned
incompatibility may occur .
Back-end related issues: https://github.com/apache/apisix/issues/4048
## Describe the solution you'd like
If Dashboard version 2.6 adds the empty expression of `"vars":{}` by default
when adding routes, then we should remove it.
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