[英]Update random array value of elements on the collection
I have a dataset of 1700 entries which have entries like this: 我有1700个条目的数据集,这些条目具有以下内容:
{
"_id" : ObjectId("5a7acda13b808dbed05d6505"),
"name" : "Nil",
"symbol" : "@A",
"isin" : "47",
"group" : "Nil",
"sector" : "Nil",
"tagcounter" : 0
},
{
"_id" : ObjectId("5a7acda13b808dbed05d6506"),
"name" : "Nil",
"symbol" : "@B",
"isin" : "48",
"group" : "Nil",
"sector" : "Nil",
"tagcounter" : 0
},
{
"_id" : ObjectId("5a7acda13b808dbed05d6507"),
"name" : "Nil",
"symbol" : "@C",
"isin" : "49",
"group" : "Nil",
"sector" : "Nil",
"tagcounter" : 0
}//.....upto 1700 entries
Now I have an array which has some value like this: 现在,我有一个数组,其值如下所示:
var array = ['Fruit', 'Vegetable', 'Drinks', 'Fast-Food', 'Healthy-Food'];
Now I want to update entire sector values from "Nil" to "Any value From array". 现在,我想将整个扇区值从“ Nil”更新为“ Any value From array”。 The expected result will be like this:
预期的结果将是这样的:
{
"_id" : ObjectId("5a7acda13b808dbed05d6505"),
"name" : "Nil",
"symbol" : "@A",
"isin" : "47",
"group" : "Nil",
"sector" : "Fruit",
"tagcounter" : 0
},
{
"_id" : ObjectId("5a7acda13b808dbed05d6506"),
"name" : "Nil",
"symbol" : "@B",
"isin" : "48",
"group" : "Nil",
"sector" : "Drinks",
"tagcounter" : 0
},
{
"_id" : ObjectId("5a7acda13b808dbed05d6507"),
"name" : "Nil",
"symbol" : "@C",
"isin" : "49",
"group" : "Nil",
"sector" : "Fast-Food",
"tagcounter" : 0
}
What I did for this is: 我为此所做的是:
db.Collection.update({},{$set: {'sector': ['Fruit', 'Vegetable', 'Drinks', 'Fast-Food', 'Healthy-Food']}}, {multi: true }, function(error, data){
if( error) {
console.log(error);
} else {
console.log(data);
}
});
But by this, The Entire Array is copied on every field rather than one value. 但是,这样,整个数组将复制到每个字段而不是一个值。
I know there is a problem on providing the whole array. 我知道在提供整个阵列方面存在问题。
If anyone has solution for this then please let me know. 如果有人对此有解决方案,请告诉我。
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