tip when passed invalid arg

README.md

@@ -142,6 +142,10 @@ Telegram：[@lgc2333](https://t.me/lgc2333)
 
 ## 📝 更新日志
 
+### 0.1.4
+
+- 现在缺少参数会提示了
+
 ### 0.1.3
 
 - fix [#2](https://github.com/lgc-NB2Dev/nonebot-plugin-cnrail/issues/2)

nonebot_plugin_cnrail/__init__.py

@@ -6,7 +6,7 @@
 from . import __main__ as __main__  # noqa: E402
 from .config import ConfigModel  # noqa: E402
 
-__version__ = "0.1.3"
+__version__ = "0.1.4"
 __plugin_meta__ = PluginMetadata(
     name="CNRail",
     description="查询 12306 列车时刻表",

nonebot_plugin_cnrail/__main__.py

@@ -3,11 +3,11 @@
 from datetime import date, datetime
 from typing import Optional
 
-from arclet.alconna import Alconna, Args, CommandMeta
+from arclet.alconna import Alconna, Args, Arparma, CommandMeta
 from httpx import TimeoutException
 from nonebot import logger
-from nonebot_plugin_alconna import AlconnaMatcher, Query, on_alconna
-from nonebot_plugin_alconna.uniseg import Image, UniMessage
+from nonebot_plugin_alconna import AlconnaMatcher, on_alconna
+from nonebot_plugin_alconna.uniseg import UniMessage
 
 from .data_source import MultipleTrainFoundError, query_train_info, render_train_info
 
@@ -44,19 +44,21 @@ def parse(df: str) -> Optional[date]:
         ),
     ),
     aliases={"列车信息", "查询列车"},
-    auto_send_output=True,
+    skip_for_unmatch=False,
     use_cmd_start=True,
 )
 
 
 @search_train_info.handle()
-async def _(
-    matcher: AlconnaMatcher,
-    train_no_query: Query[str] = Query("train"),
-    date_query: Query[Optional[str]] = Query("date", None),
-):
-    train_no: str = train_no_query.result
-    train_date: Optional[str] = date_query.result
+async def _(matcher: AlconnaMatcher, parma: Arparma):
+    if parma.error_info:
+        await matcher.finish(f"{parma.error_info}\n使用指令 `train -h` 查看帮助")
+
+
+@search_train_info.handle()
+async def _(matcher: AlconnaMatcher, parma: Arparma):
+    train_no: str = parma["train"]
+    train_date: Optional[str] = parma["date"]
 
     try:
         date_obj = parse_date(train_date) if train_date else date.today()
@@ -85,5 +87,4 @@ async def _(
         logger.exception("Failed to render train info")
         await matcher.finish("渲染图片时出现错误，请检查后台输出")
 
-    await UniMessage(Image(raw=img_bytes)).send(reply_to=True)
-    await matcher.finish()
+    await matcher.finish(UniMessage.image(raw=img_bytes))