Learn Model Testing with TDD

Learn the skills to create the model layer of a web application using Mongoose and TDD.

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Mongoose Fundamentals

Lesson 1 of 2

1
Intro To Databases
Mongoose is a Node package that interacts with a running MongoDB database. Before learning about Mongoose, let’s define a couple of key terms: - Data - Database #### What is Data? Data in the…
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2
Mongoose Collections & Documents
Mongo stores data in ‘binary’ JSON (BSON) documents. BSON documents have a similar structure to JavaScript objects. MongoDB stores documents in a collection. A MongoDB database is made up of t…
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3
Schemas
Mongoose is a JavaScript library that provides methods to interact with a MongoDB database. Mongoose translates JavaScript objects (JSON) to BSON data in a MongoDB database, and vice versa. Mongoo…
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4
Paths
The key-value pair in a schema is called a path. Paths define the name and type of fields in a MongoDB document. const poemSchema = new mongoose.Schema({ title: String, body: [String], publ…
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5
Validators
In our original poetry application example we declared the schema type for our title as a String: const poemSchema = new mongoose.Schema({ title: String }) Often, we want to specify more than j…
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6
Models
To use our poemSchema definition: const poemSchema = new mongoose.Schema({ title: String, }); we need to convert our poemSchema into a Model we can work with. Schemas provide the definition for…
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7
Create
Our model is a class with properties that we define in our schema. We can construct documents as instances of our model. Creating documents and saving them to the database can be done by calling .c…
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8
Queries
At this point, we will start creating instances in a MongoDB database, then query the database for the values we saved. All of the method calls and queries will be passed to runWithDatabase(). I…
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9
Methods
Mongoose supports the creation of methods on both instances of documents and collections of documents (the model). - .statics() adds static “class” methods to the model. - .methods() adds an in…
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10
Review
In this lesson, you learned how to use Mongoose to interact with a MongoDB database. Let’s review some of the topics that we covered: - Mongoose is a Node package that interacts with a running Mong…
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