## 獲取年級列表
```
app('rpc.course')->call('apps.misc.grades',[]);
```
~~~[api]
apps.misc.editions
id=1
<<<
Array
{
"jsonrpc":"2.0",
"result":{
????????"1":"一年級",
????????"2":"二年級",
????????"3":"三年級",
????????"4":"四年級",
????????"5":"五年級",
????????"6":"六年級",
????????"7":"七年級",
????????"16":"學前"
????},
"id":"0af96323cc284e61104517139f96e7e7"
}
<<<
error
Array
(
[error] => Array
(
[code] => -32602
[message] => Invalid params
[data] =>
)
)
~~~
