mongoose 二级 type 错误报错 500 而不是 422

来源：12-6 用户属性中的话题引用

木恩丶

2019-08-09

比如说 educations 中的 diploma 字段如果我输入的是 “str” 返回的是 500 错误而不是 "message": "Validation Failed" , 没有查到对应解决方法

 "stack": "CastError: Cast to embedded failed for value \"{ school: \\'5d4d0fd085e62da0ea6c5bf8\\',\\n  major: \\'5d4d123a7b8ad9a18d3e01e8\\',\\n  diploma: \\'e\\' }\" at path \"educations\"\n    at new CastError (/Users/mac/Desktop/jevonsOfCode/toLearnKoa/node_modules/mongoose/lib/error/cast.js:29:11)\n    at DocumentArray.cast (/Users/mac/Desktop/jevonsOfCode/toLearnKoa/node_modules/mongoose/lib/schema/documentarray.js:408:19)\n    at DocumentArray.SchemaType.applySetters (/Users/mac/Desktop/jevonsOfCode/toLearnKoa/node_modules/mongoose/lib/schematype.js:948:12)\n    at DocumentArray.SchemaType._castForQuery (/Users/mac/Desktop/jevonsOfCode/toLearnKoa/node_modules/mongoose/lib/schematype.js:1362:15)\n    at DocumentArray.SchemaType.castForQueryWrapper (/Users/mac/Desktop/jevonsOfCode/toLearnKoa/node_modules/mongoose/lib/schematype.js:1329:17)\n    at castUpdateVal (/Users/mac/Desktop/jevonsOfCode/toLearnKoa/node_modules/mongoose/lib/helpers/query/castUpdate.js:451:19)\n    at walkUpdatePath (/Users/mac/Desktop/jevonsOfCode/toLearnKoa/node_modules/mongoose/lib/helpers/query/castUpdate.js:278:22)\n    at castUpdate (/Users/mac/Desktop/jevonsOfCode/toLearnKoa/node_modules/mongoose/lib/helpers/query/castUpdate.js:80:18)\n    at model.Query._castUpdate (/Users/mac/Desktop/jevonsOfCode/toLearnKoa/node_modules/mongoose/lib/query.js:4405:10)\n    at castDoc (/Users/mac/Desktop/jevonsOfCode/toLearnKoa/node_modules/mongoose/lib/query.js:4433:18)\n    at model.Query.Query._findAndModify (/Users/mac/Desktop/jevonsOfCode/toLearnKoa/node_modules/mongoose/lib/query.js:3401:19)\n    at model.Query.<anonymous> (/Users/mac/Desktop/jevonsOfCode/toLearnKoa/node_modules/mongoose/lib/query.js:2949:8)\n    at model.Query._wrappedThunk [as _findOneAndUpdate] (/Users/mac/Desktop/jevonsOfCode/toLearnKoa/node_modules/mongoose/lib/helpers/query/wrapThunk.js:16:8)\n    at process.nextTick (/Users/mac/Desktop/jevonsOfCode/toLearnKoa/node_modules/kareem/index.js:369:33)\n    at process._tickCallback (internal/process/next_tick.js:61:11)",
 "message": "Cast to embedded failed for value \"{ school: \\'5d4d0fd085e62da0ea6c5bf8\\',\\n  major: \\'5d4d123a7b8ad9a18d3e01e8\\',\\n  diploma: \\'e\\' }\" at path \"educations\"",

错误信息如上，课程还没看完不知道后面是否有解决方法 QAQ

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