小编Jou*_*ill的帖子

我试图使用此 SQLAlchemy URI 将超集与 mysql 数据库连接：mysql://localhost:3306/mysql/database/table1 但无法连接。

我收到此错误：

ERROR: {"error": "Connection failed!

The error message returned was:
No module named 'MySQLdb'", "stacktrace": "Traceback (most recent call last):
  File \"/Users/akay/venv/lib/python3.7/site-packages/superset/views/core.py\", line 1703, in testconn
    engine = database.get_sqla_engine(user_name=username)
  File \"/Users/akay/venv/lib/python3.7/site-packages/superset/utils/core.py\", line 131, in __call__
    value = self.func(*args, **kwargs)
  File \"/Users/akay/venv/lib/python3.7/site-packages/superset/models/core.py\", line 923, in get_sqla_engine
    return create_engine(url, **params)
  File \"/Users/akay/venv/lib/python3.7/site-packages/sqlalchemy/engine/__init__.py\", line 479, in create_engine
    return strategy.create(*args, **kwargs)
  File \"/Users/akay/venv/lib/python3.7/site-packages/sqlalchemy/engine/strategies.py\", line 87, in create
    dbapi = dialect_cls.dbapi(**dbapi_args)
  File \"/Users/arkay/venv/lib/python3.7/site-packages/sqlalchemy/dialects/mysql/mysqldb.py\", line 118, in dbapi …

我正在将 HotChocolate (11.2.2) 与 EF Core 一起使用，并且想要过滤子属性。根据 GraphQL 文档，这应该可以通过在导航属性上使用过滤器关键字来实现，但 HotChocolate 失败了。

我的架构：

type A {
    Name: string,
    RefTo: [B]
}
type B {
    TypeName: string,
    Value: int
}

这是由 EF 支持的，我IQueryable<A>向 HotChocolate 提供了一个。

[UsePaging]
[UseProjection]
[UseFiltering]
[UseSorting]
public IQueryable<A> GetAs([Service] Context db) => db.As.AsSingleQuery().AsNoTrackingWithIdentityResolution();

现在我只想包含那些等于的Bs ，如下所示：TypeName"ExampleType"

query {
   As {
      Name,
      RefTo(where: { TypeName: { eq: "ExampleType" } })
      {
          TypeName,
          Value
      }
   }
}

但 HotChcolate 似乎并不明白这一点，并说道：

Unknown argument "where" on field "A.RefTo".validation …

我通过安装 chakra-ui，

npm 我 @chakra-ui/react @emotion/react@^11 @emotion/styled@^11 framer-motion@^6

使用 ChakraProvider 组件时出现以下错误。

我的后端位于 php laravel 5.4 中，我想在我的 Angular/ionic 项目中使用我的会话变量，就像我在 Blade 文件中使用它一样，即使用$_SESSION['variable_name']

到目前为止我还没有找到方法，到目前为止我唯一的方法是调用 api 并使用这个：

localStorage.setItem('sessionToken', response.sessionToken);

我有一个关联数组，如下所示：

$sensorThreshold = [
  'ph' => [
    'minPh' => $sensorThreshold->where('name', 'Ph')->last()->min_threshold ?? 0,
    'maxPh' => $sensorThreshold->where('name', 'Ph')->last()->max_threshold ?? 0,
    'sum' =>  $sensorThreshold->where('name', 'Ph')->last()->min_threshold + $sensorThreshold->where('name', 'Ph')->last()->max_threshold,
  ]
]

当我定义数组时如何访问minPh和值？maxPh喜欢：

$sensorThreshold = [
  'ph' => [
    'minPh' => $sensorThreshold->where('name', 'Ph')->last()->min_threshold ?? 0,
    'maxPh' => $sensorThreshold->where('name', 'Ph')->last()->max_threshold ?? 0,
    'sum' =>  minPh + maxPh,
  ]
]

bot.on('guildMemberAdd', member =>{

    const welcomeEmbed = new Discord.MessageEmbed()
    .setTitle(`A new user has joined the server, everyone welcome ${member.user}!`)

    const channel = member.guild.channels.cache.find(channel => channel.name === "welcome-channel");
    if(!channel) return;

    channel.send(welcomeEmbed)
});