MongoDBで簡単な検証を実行しますか？

MongoDBでの検証には、バリデーターを使用します。以下は、MongoDBのコレクションで検証を作成するためのクエリです-

> db.createCollection( "demo437" , {
...    validator: { $jsonSchema: {
...       bsonType: "object",
...       required: [ "FirstName", "LastName"],
...       properties: {
...          FirstName: {
...             bsonType: "string",
...             description: "This is required" },
...             LastName: {
...                bsonType: "string",
...                description: "This is required" }
...
... }
... }}})
{ "ok" : 1 }

ドキュメントを使用してコレクションを作成しましょう-

> db.demo437.insertOne({"FirstName":"John","LastName":1234});
2020-03-22T17:49:55.590+0530 E QUERY [js] WriteError: Document failed validation :
WriteError({
   "index" : 0,
   "code" : 121,
   "errmsg" : "Document failed validation",
   "op" : {
   "_id" : ObjectId("5e7757ebbbc41e36cc3cae9a"),
   "FirstName" : "John",
   "LastName" : 1234
   }
})
WriteError@src/mongo/shell/bulk_api.js:461:48
Bulk/mergeBatchResults@src/mongo/shell/bulk_api.js:841:49
Bulk/executeBatch@src/mongo/shell/bulk_api.js:906:13
Bulk/this.execute@src/mongo/shell/bulk_api.js:1150:21
DBCollection.prototype.insertOne@src/mongo/shell/crud_api.js:252:9
@(shell):1:1
>
> db.demo437.insertOne({"FirstName":"John","LastName":"Smith"});
{
   "acknowledged" : true,
   "insertedId" : ObjectId("5e7757f7bbc41e36cc3cae9b")
}
> db.demo437.insertOne({"FirstName":9887,"LastName":"Miller"});
2020-03-22T17:50:29.631+0530 E QUERY [js] WriteError: Document failed validation :
WriteError({
   "index" : 0,
   "code" : 121,
   "errmsg" : "Document failed validation",
   "op" : {
      "_id" : ObjectId("5e77580dbbc41e36cc3cae9c"),
      "FirstName" : 9887,
      "LastName" : "Miller"
   }
})
WriteError@src/mongo/shell/bulk_api.js:461:48
Bulk/mergeBatchResults@src/mongo/shell/bulk_api.js:841:49
Bulk/executeBatch@src/mongo/shell/bulk_api.js:906:13
Bulk/this.execute@src/mongo/shell/bulk_api.js:1150:21
DBCollection.prototype.insertOne@src/mongo/shell/crud_api.js:252:9
@(shell):1:1
>
>
> db.demo437.insertOne({"FirstName":"David","LastName":"Miller"});
{
   "acknowledged" : true,
   "insertedId" : ObjectId("5e775816bbc41e36cc3cae9d")
}

find（）メソッドを使用してコレクションからすべてのドキュメントを表示する-

> db.demo437.find();

これにより、次の出力が生成されます-

{ "_id" : ObjectId("5e7757f7bbc41e36cc3cae9b"), "FirstName" : "John", "LastName" : "Smith" }
{ "_id" : ObjectId("5e775816bbc41e36cc3cae9d"), "FirstName" : "David", "LastName" : "Miller" }