图形in在邮政文件中作为“makeProcessSchemaPlugin”的屏蔽

Question

试后恋示例，但不知道哪里弄错了？

我正在尝试将graphql-屏蔽作为插件来实现。

    middlewarePlugin = makeProcessSchemaPlugin((schema: typeof GraphQLSchema) => {
        return applyMiddleware(schema, permissions);
    });

permission.ts

const { rule, shield } = require("graphql-shield");

const isAuthenticated = rule()((parent: any, args: any,  user: any ) => {
    return user !== null;
});

const permissions = shield({
    Query: {
        viewer: isAuthenticated
    }
});

export = permissions;

我将middlewarePlugin作为其他插件导入到postgraphile中：

  appendPlugins: [
            myClass.myPlugin,
            myClass.jsonPlace,
            myClass.middlewarePlugin
        ],

撞车日志：

生成初始架构时发生严重错误。退出是因为没有设置retryOnInitFail。错误详细信息: graphql / graphql \x TypeError:无法读取未定义的石墨at的属性“片段”，即在(/home/node/app/node_modules/graphql-middleware/src/utils.ts:25:17)的isMiddlewareWithFragment上，在Object.validateMiddleware (/home/node/app/node_modules/graphql-middleware/src/validation.ts:9:上，Object.isMiddlewareFunction的Object.isMiddlewareFunction图形at7) (/home/node/app/node_modules/graphql-middleware/src/middleware.ts:33:27)的graphql \x{e 010} normalisedMiddlewares.reduceRight.schema.schema (/home/node/app/node_modules/graphql-middleware/src/middleware.ts:91:11)的Array.reduceRight ()的Array.reduceRight()的graphql /Array.reduceRight()的graphql /Array.reduceRight()@ at (/home/node/app/node_modules/graphql-middleware/src/middleware.ts:132:10) (/home/node/app/resolvers/test.resolver.ts:254:16) graphql _ at hook (/home/node/app/resolvers/test.resolver.ts:254:16) graphql = SchemaBuilder.applyHooks (/home/node/app/node_modules/graphile-build/src/SchemaBuilder.js:398:20)

Answer 1

postgraphile所期望的中间件类型与graphql-中间件略有不同。我没有下载graphql-middleware和graphql-shield并试图让他们使用postgraphile，而是用makeWrapResolversPlugin编写了自己的“盾牌”。示例：

const filter = (ctx) => {
  // Only attempting to do auth for non-root things, because
  // with postgraphile, all the data gets fetched at the root
  if (ctx.scope.isRootMutation || ctx.scope.isRootQuery) {
    // return this to make it available to the wrapper function
    return ctx.scope.fieldName
  }
  // return null to not wrap this non-root resolver
  return null
}

const wrapper = (fieldName) => 
  async (resolve, source, args, context) => {
    // Unless we're doing createUser, do an auth check

    // 
    if (fieldName === "createUser") return resolve()

    const isAuthenticated = await getIsAuthenticated(context)

    // 
    if (isAuthenticated) return resolve()

    throw new Error("Unauthorized");
  }

const Permissions = makeWrapResolversPlugin(filter, wrapper)