MongoDb重複輸入錯誤

嗨，爲什麼我得到重複輸入錯誤。如果文檔在數據庫中，我會事先檢查。我的模型需要idName的唯一性。我從JSON數組中加載數據，prooven只是假的，沒有真正的條目。MongoDb重複輸入錯誤

async.map recipe.zutaten, 
    (ingredient, cb) -> 
    #Save all ingredients 
    ingredient.idName = ingredient.name.replace(/[^a-zA-Z0-9]+/gi, "").toLowerCase() 
    ingredientModel.find({ idName: ingredient.idName }, (err, ingredientFound) -> 
     return next err if err 

     ingredientsJson = {"idName":ingredient.idName, "name":ingredient.name, "amount":ingredient.amount} 
     #if found just pass it to recipes 
     if ingredientFound? && ingredientFound.length > 0 
     ingredientsJson.prooven = true 
     return cb null, ingredientsJson 
     #if not found evaluate if to save 
     else 
     #if not prooven just add the json to recipes 
     if(ingredient.prooven? && ingredient.prooven == false) 
      ingredientsJson.prooven = false 
      return cb null, ingredientsJson 
     #if prooven save it into database 
     else 
      ingredientDBObject = new ingredientModel() 
      ingredientDBObject.name = ingredient.name 
      ingredientDBObject.idName = ingredient.idName 
      ingredientDBObject.save((err) -> 
      return cb err if err 
      ingredientsJson.prooven = true 
      return cb null, ingredientsJson 
     ) 
    ) 
    ...

錯誤

{ [MongoError: insertDocument :: caused by :: 11000 E11000 duplicate key error index: database.ingredients.$idName_1 dup key: { : "zitronensaft" }] 
    name: 'MongoError', 
    message: 'insertDocument :: caused by :: 11000 E11000 duplicate key error index: database.ingredients.$idName_1 dup key: { : "zitronensaft" }', 
    index: 0, 
    code: 11000, 
    errmsg: 'insertDocument :: caused by :: 11000 E11000 duplicate key error index: database.ingredients.$idName_1 dup key: { : "zitronensaft" }' }

來源

2015-04-01 Andi Giga

我想這個問題是關係找到的異步特性。即使cb尚未返回，異步也會遍歷配料。我已經在find函數中移動了'ingredient.idName = ingredient.name.replace（/ [^ a-zA-Z0-9] +/gi，「」）.toLowerCase（）'。 – 2015-04-01 18:41:39

的問題與async.map它不會等待回調。使用async.mapSeries修復了這個問題。地圖系列等待CB有待解決： https://github.com/caolan/async#mapSeries

... 
async.mapSeries recipes, 
    (recipe, next) -> 
    ...  
    async.mapSeries recipe.zutaten, 
     (ingredient, cb) -> 
      ...

來源

2015-04-02 07:13:27

MongoDb重複輸入錯誤

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