在 Apollo-server

如何解决在 Apollo-server

字段级别的密码指令不能用作 expected。

最小示例：

type Question {
  id: ID! @id
  required: Boolean
  testing(someId: ID!): Boolean
    @cypher(statement: """
      MATCH (q:Question {id:$someId}) RETURN q.required
    """)
}

运行以下查询时，出现错误。

{
  Question {
    testing(someId: "12345678-1234-1234-1234-0123456789ab")
  }
}

这是在 Apollo Playground 中看到的错误日志：

{“错误”：[ { "message": "无效输入 '_someId': 预期\n "!="\n "%"\n ""\n "+"\n ","\n "-"\n "." \n "/"\n ":"\n ""\n "="\n "=~"\n ">"\n ">="\n "AND"\n "CONTAINS"\n "ENDS"\n "IN"\n "IS"\n "OR"\n "STARTS"\n "XOR"\n "["\n "^"\n "}"（第 1 行，第 195 列 （偏移量：194））\n“匹配（question：Question）返回question {testing: apoc.cypher.runFirstColumn("MATCH (q:Question {id:$someId}) RETURN q.required",{this: question,cypherParams: $cypherParams,someId: $1_someId},false)} AS question"\n
^",“地点”：[ { “线”：2， “列”：3 } ],“小路”： [ “问题” ],“扩展”：{ "code": "INTERNAL_SERVER_ERROR",“例外”： { "code": "Neo.ClientError.Statement.SyntaxError","name": "Neo4jError",“堆栈跟踪”： [ "Neo4jError: 无效输入 '_someId': 预期"," "!=""," "%""," """,""+"",""," "-""," ".""," "/""," ":""," """," "=""," "=~"","">""," ">="",“ “和””， ""包含""," "结束"",“ “在””， “ “是””， “ “要么””， " "开始""," "异或""," "[""," "^""," "}"（第 1 行，第 195 列（偏移量：194））",""MATCH (question:Question) RETURN question {testing: apoc.cypher.runFirstColumn("MATCH (q:Question {id:$someId}) RETURN q.required",false)} AS question"","^",": "," at captureStacktrace (/home/m1/citizentric/grand-housing/node_modules/neo4j-driver-core/lib/result.js:239:17)"," 在新结果 (/home/m1/citizentric/grand-housing/node_modules/neo4j-driver-core/lib/result.js:59:23)"," 在 newCompletedResult (/home/m1/citizentric/grand-housing/node_modules/neo4j-driver-core/lib/transaction.js:372:12)"," 在 Object.run (/home/m1/citizentric/grand-housing/node_modules/neo4j-driver-core/lib/transaction.js:226:20)"," 在 Transaction.run (/home/m1/citizentric/grand-housing/node_modules/neo4j-driver-core/lib/transaction.js:98:34)"," 在 _callee3$ (/home/m1/citizentric/grand-housing/node_modules/neo4j-graphql-js/dist/index.js:226:35)"," 在 tryCatch (/home/m1/citizentric/grand-housing/node_modules/regenerator-runtime/runtime.js:63:40)"," at Generator.invoke [as _invoke] (/home/m1/citizentric/grand-housing/node_modules/regenerator-runtime/runtime.js:293:22)"," 在 Generator.next (/home/m1/citizentric/grand-housing/node_modules/regenerator-runtime/runtime.js:118:21)"," 在 asyncGeneratorStep (/home/m1/citizentric/grand-housing/node_modules/@babel/runtime-corejs2/helpers/asyncToGenerator/index.js:5:24)"," 在 _next (/home/m1/citizentric/grand-housing/node_modules/@babel/runtime-corejs2/helpers/asyncToGenerator/index.js:27:9)"," 在 /home/m1/citizentric/grand-housing/node_modules/@babel/runtime-corejs2/helpers/asyncToGenerator/index.js:34:7"," at new Promise()"," 在新 F (/home/m1/citizentric/grand-housing/node_modules/@babel/runtime-corejs2/node_modules/core-js/library/modules/_export.js:36:28)"," 在 /home/m1/citizentric/grand-housing/node_modules/@babel/runtime-corejs2/helpers/asyncToGenerator/index.js:23:12",“在/home/m1/citizentric/grand-housing/node_modules/neo4j-graphql-js/dist/index.js:241:30” ] } } } ]， “数据”： { “问题”：null } }

我的 package.json 包括以下版本：

"apollo-server": "^2.25.0","apollo-server-core": "^2.25.0","graphql-tag": "^2.12.5","neo4j-driver": "^4.3.1","neo4j-graphql-js": "^2.19.2",

使用密码装饰器的顶级查询（带参数）和字段级查询可以正常工作，只要它们不接受参数即可。 我的印象是这在早些时候奏效了。

解决方法

除非您创建突变，否则库 "neo4j-graphql-js": "^2.19.2" 似乎不会传递自定义参数。尝试以下方式：

type Question {
  id: ID! @id
  required: Boolean
}

extend type Mutation {
  testing(someId: ID!): Boolean
    @cypher(
      statement: """
      MATCH (q:Question {id: $someId}) RETURN q.required
      """
    )
}

mutation {
  testing (someId: "12345678-1234-1234-1234-0123456789ab") 
}