Case analysis using Nodejs mongoose (with code)
This time I will bring you a case analysis of using Nodejs mongoose (with code). What are the precautions for using Nodejs mongoose? The following is a practical case, let's take a look.
Preface
Mongoose is an object model tool for convenient operation of mongodb in the nodejs environment. This article introduces the decryption (translation) Mongoose plug-in.
Schema
#We will talk about Schema at the beginning. A Schema corresponds to the collection of mongodb (equivalent to SQL table), and defines its structure.
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Schema Available Types:
.String (ex: 'ABCD')
.Number (ex: 123)
.Date (ex: new Date)
.Buffer (ex: new Buffer(0))
.Boolean (ex: false)
.Schema.Types.Mixed (ex: {any :{thing:'ok'}})
.Schema.Types.ObjectId (ex:new mongoose.Types.ObjectID)
.Array (ex:[1,2,3] )
.Schema.Types.Decimal128
.Map (ex: new Map([['key','value']]))
We can pass a section Code, convert Schema into Model: mongoose.model(modelName,Schema)
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is assigned to the Schema method. When the method is converted to Model, the method will be assigned to the Model
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in the Schema method. Here, don't use arrow functions, which will rebind this.
Assign Schema static (static) method, we continue to use the above example:
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Schema index index
MongoDB Supports secondary indexes. In mongoose, we can set the index at the Schema layer.
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When using index (secondary index), remember to disable Mongodb's autoIndex.
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Virtualization
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Alias
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Add
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Delete
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Change
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check
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I believe you have mastered the method after reading the case in this article. For more exciting information, please pay attention to other related articles on the php Chinese website !
Recommended reading:
What are the precautions for using Dom with Angular2
How to use the vue slot socket in the project
The above is the detailed content of Case analysis using Nodejs mongoose (with code). For more information, please follow other related articles on the PHP Chinese website!

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