Create models

Model creation with the command line interface

In the node JS command prompt, inside your loopback project, type the following command to create a new model.

slc loopback:model

If you have installed LoopBack CLI tool, you can create model with:

lb model

The command prompt will request informations about the model to create. In this example, a model Foo will be created.

Enter the model name: Foo

Models can be based on one of the built-in loopback classes. Persisted models are the most common choice, representing structured data that should be stored (= persisted) inside a database.

[?] Select model's base class: (Use arrow keys)
  Model
❯ PersistedModel
  ACL
  AccessToken
  Application
  Change
  Checkpoint

It is possible to expose Foo through a REST API. The generated API will contain methods for reading, creating, updating and deleting instances of the Foo model.

[?] Expose Foo via the REST API? (Y/n) Y

To define all REST API urls for this model, Loopback uses the plural form. In the next prompt below, leaving the field empty means the s character will be appended to the model’s name Foo.

For instance, loopback will define the endpoint GET /Foos.

But some names do not have such a plural form, such as Repository becomes Repositories in plural form. In those cases, type the plural form in those fields.

[?] Custom plural form (used to build REST URL):

TBD

? Common model or server only?
❯ common
  server

Let's add some Foo properties now.
Enter an empty property name when done.
[?] Property name: name
   invoke   loopback:property
[?] Property type: (Use arrow keys)
❯ string
  number
  boolean
  object
  array
  date
  buffer
  geopoint
  (other)

[?] Required? (y/N)

node .

Navigate to localhost:3000/explorer and observe the REST API generated for Foo