mongoose - MongoDb Duplicate Entry Error -


hi why i'm getting duplicate entry errors. check in advance if document in database. model requires uniqueness idname. load data json array, prooven false, there no entries true.

async.map recipe.zutaten,   (ingredient, cb) ->     #save 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 pass recipes       if ingredientfound? && ingredientfound.length > 0         ingredientsjson.prooven = true         return cb null, ingredientsjson       #if not found evaluate if save       else         #if not prooven add json recipes         if(ingredient.prooven? && ingredient.prooven == false)           ingredientsjson.prooven = false           return cb null, ingredientsjson         #if prooven save 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           )     )     ...

error

{ [mongoerror: insertdocument :: caused :: 11000 e11000 duplicate key error index: database.ingredients.$idname_1  dup key: { : "zitronensaft" }]   name: 'mongoerror',   message: 'insertdocument :: caused :: 11000 e11000 duplicate key error index: database.ingredients.$idname_1  dup key: { : "zitronensaft" }',   index: 0,   code: 11000,   errmsg: 'insertdocument :: caused :: 11000 e11000 duplicate key error index: database.ingredients.$idname_1  dup key: { : "zitronensaft" }' }

the problem related async.map not wait callback. use of async.mapseries fixed problem. map series waits cb resolved: https://github.com/caolan/async#mapseries

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

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