Question

我们已经有一个包含数据的Postgresql数据库，并且我们正在尝试将postgraphile作为graphql API。我们遇到了一个错误，使我们挠头。服务器运行正常，但我们得到以下信息：

postgraphile -c postgres://username:password@localhost:5432/my_db                                                                

PostGraphile server listening on port 5000                                                                                                                 

  ‣ Connected to Postgres instance postgres://localhost:5432/my_db                                                                                          
  ‣ Introspected Postgres schema(s) public                                                                                                                      
  ‣ GraphQL endpoint served at http://localhost:5000/graphql                                                                                                    
  ‣ GraphiQL endpoint served at http://localhost:5000/graphiql                                                                                                  

* * *                                                                                                                                                           

An error occurred, it might be okay but it doesn't look like the error we were expecting... run with envvar 'DEBUG="graphile-build:warn"' to view the error     
An error occurred, it might be okay but it doesn't look like the error we were expecting... run with envvar 'DEBUG="graphile-build:warn"' to view the error     

Error: Query root type must be provided.                                                                                                                        
    at assertValidSchema (C:\Users\user\AppData\Roaming\npm\node_modules\postgraphile\node_modules\graphql\type\validate.js:78:11)                      
    at Object.validate (C:\Users\user\AppData\Roaming\npm\node_modules\postgraphile\node_modules\graphql\validation\validate.js:61:35)                  
    at parseQuery (C:\Users\user\AppData\Roaming\npm\node_modules\postgraphile\build\postgraphile\http\createPostGraphileHttpRequestHandler.js:208:48)  
    at Promise.all.paramsList.map (C:\Users\user\AppData\Roaming\npm\node_modules\postgraphile\build\postgraphile\http\createPostGraphileHttpRequestHandler.js:469:63)                                                                                                                                                  
    at Array.map (<anonymous>)                                                                                                                                  
    at requestHandler (C:\Users\user\AppData\Roaming\npm\node_modules\postgraphile\build\postgraphile\http\createPostGraphileHttpRequestHandler.js:435:52)                                                                                                                                   
    at <anonymous>                                                                                                                                              
    at process._tickCallback (internal/process/next_tick.js:188:7)

，当我们导航到localhost：500 / graphiql时，在文档资源管理器中看到“无可用模式”。

查询是否以public模式为根？还是我们想念什么？

Answer 1

较新版本的PostGraphile具有更多有用的错误消息，通常包括建议的解决方案。像上面的那些“发生错误”错误现在也包含潜在错误的预览，有助于诊断。

此处有有关如何在此处设置<!DOCTYPE HTML> <head> <link rel="stylesheet" href="staffdesign.css"> <meta charset="UTF-8" /> </head> <body> <h3>Staff Page</h3> <div class="staffboxes"> <p> <div class="staffpfp"><img src="https://i.stack.imgur.com/f505l.png" alt="Kouhai's DP" /></div> <h3>Kouhai</h3> </p> </div> </body> </html>环境变量的说明：https://www.graphile.org/postgraphile/debugging/#debug-envvars

在Linux，macOS或Windows上，您可能会这样做：

DEBUG

邮编-“必须提供查询根”错误消息

1 个答案: