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所以我正在尝试创建一个设计文档CouchDB还有一个小问题。这是一个机器人团队侦察系统。设计文档应该检查用户是否具有“marea”角色。如果他们这样做，则允许他们将文档输入到数据库中。然后设计文档应该采用 JSON 字段“points”并在“team”字段匹配时对其进行平均。平均值应合并回数据库。如果用户没有“marea”角色，那么他们应该被限制输入任何文档。请让我知道您对以下代码的看法，我还想就收到的错误消息提供一些建议。我可以很好地保存设计文档，但它的功能有点不确定。即使该用户具有“marea”角色，它也可以防止用户创建具有“points”值的新文档。

Save failed: Expression does not eval to a function. (function(newDoc, oldDoc, userCtx, secObj) { if ((userCtx.roles.indexOf("2018marea") !==
-1) || (userCtx.name == oldDoc.name)) { if (!doc) { if ("id" in req && req["id"]) { return [{"_id": req["id"]}, "New Doc"] emit(null, "points") var pointsArray = ["points"], thisTotal = 0, thisAverage = 0; for(var i = 0;i < pointsArray.length; i++) { thisTotal+ = pointsArray[i]; } thisAverage = (thisTotal/pointsArray.length); } return [null, "Empty Database."] } doc["New Doc"] = thisAverage; doc["edited_by"] = req["userCtx"]["name"] return [doc, "Edited Data."] } else { return [null, "Cannot Overwrite Data"] } } )

如何解决此问题，以便设计文档执行其预期功能？

{
  "_id": "_design/marea",
  "language": "javascript",
  "validate_doc_update": "function(newDoc, oldDoc, userCtx, secObj) {\r\n\r\n    if ((userCtx.roles.indexOf(\"2018marea\") !== -1) || (userCtx.name == oldDoc.name)) { \r\n    \r\n        if (!doc) {\r\n        \r\n            if (\"id\" in req && req[\"id\"]) {\r\n            \r\n                return [{\"_id\": req[\"id\"]}, \"New Doc\"]  \r\n                emit(null, \"points\")\r\n                var pointsArray = [\"points\"], thisTotal = 0, thisAverage = 0;\r\n                for(var i = 0;i < pointsArray.length; i++)  {\r\n                \r\n                  thisTotal+ = pointsArray[i];\r\n                \r\n                }\r\n                \r\n                thisAverage = (thisTotal/pointsArray.length); \r\n                \r\n            }\r\n            \r\n            return [null, \"Empty Database.\"]\r\n            \r\n        }\r\n        \r\n        doc[\"New Doc\"] = thisAverage;\r\n        doc[\"edited_by\"] = req[\"userCtx\"][\"name\"] \r\n        return [doc, \"Edited Data.\"]  \r\n\r\n    } else {\r\n    \r\n        return [null, \"Cannot Overwrite Data\"]\r\n   \r\n    }\r\n  } "
}
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1 回答 1

2

The error is pretty obvious: You function is not valid

  1. There's a space between + = : { thisTotal+ = pointsArray[i]; }
  2. You forgot some semi colon between few statements:

"New Doc"] ; emit(null, "points"); var pointsArray

This should work better:

function(newDoc, oldDoc, userCtx, secObj) {
  if ((userCtx.roles.indexOf("2018marea") !==  -1) || (userCtx.name == oldDoc.name)) {
    if (!doc) {
      if ("id" in req && req["id"]) {
        return [{
          "_id": req["id"]
        }, "New Doc"];emit(null, "points"); var pointsArray = ["points"],
          thisTotal = 0,
          thisAverage = 0;
        for (var i = 0; i < pointsArray.length; i++) {
          thisTotal += pointsArray[i];
        }
        thisAverage = (thisTotal / pointsArray.length);
      }
      return [null, "Empty Database."]
    }
    doc["New Doc"] = thisAverage;
    doc["edited_by"] = req["userCtx"]["name"]
    return [doc, "Edited Data."]
  } else {
    return [null, "Cannot Overwrite Data"]
  }
}
于 2018-01-27T17:18:34.210 回答