ExpressWebJs 4 is now released!

ExpressWebJs version 4 is now released and it includes many new features, including:

• Mongoose and ObjectionJs ORM support.
• SQL database relationship addons.
• Multi-tenancy support for mongo DB.
• Route match.
• Route redirect.
• Improved middleware handler methods.
• Improved service registry handlers.
• Custom validation rules.
• Improved event class generation.
• Added Redis to the supported queue connections.
• Service communication for distributed services.
• Domain-driven design (DDD).
• Support for Restana platform service for faster request processing.
• New utility features like Optional( ),ObjectMapper( ), FirstCharacterToLowerCase( ), Group( ), ObjectHasProperty( ).
• New Collection feature which helps you work on advanced data structures and algorithms.

ExpressWebJs uses a variety of community driven packages for a number of features in the framework.

ExpressWebJs version 4 will receive bug fixes until November 2023 and security fixes until February 2024. Here are some of the features that we’ve covered in detail.

We’ve added some relationship add-ons for the SQL database model.
The relationship mapping method now has a nice way of handling relationships with the new hasMany, belongsTo, hasOne, hasOneThrough, hasManyThrough methods that also accept additional options.

hasManyThrough()

 export class UserModel extends Model {
  static tableName = "users";

  id!: string;
  name!: string;
  email!: string;
  password!: string;

  static relationMappings() {
    return {
      carOwner: this.hasManyThrough("App/Model/Cars_model",
      "App/Model/CarOwners_model", {
        join_final_foreign_key: "user_id",
        join_parent_foreign_key: "car_id",
      }),
    };
  }
}

hasOneThrough()

 export class UserModel extends Model {
  static tableName = "users";

  id!: string;
  name!: string;
  email!: string;
  password!: string;

  static relationMappings() {
    return {
      carOwner: this.hasOneThrough("App/Model/Cars_model", 
        "App/Model/CarOwners_model", {
        join_final_foreign_key: "user_id",
        join_parent_foreign_key: "car_id",
      }),
    };
  }
}

hasOne()

export class UserModel extends Model {
  static tableName = "users";

  id!: string;
  first_name!: string;
  last_name!: string;
  email!: string;
  password!: string;

  static relationMappings() {
    return {
      profile: this.hasOne("App/Model/Profile_model"),
    };
  }
}

hasMany()

export class UserModel extends Model {
  static tableName = "users";

  id!: string;
  first_name!: string;
  last_name!: string;
  email!: string;
  password!: string;

  static relationMappings() {
    return {
      profile: this.hasMany("App/Model/Cars_model"),
    };
  }
}

belongsTo()

export class Posts extends Model {
  static tableName = "posts";

  id!: string;
  name!: string;
  user_id!: string;

  static relationMappings() {
    return {
      users: this.belongsTo("App/Model/Users_model"),
    };
  }
}

Relation filters
You can also add some filters to your relationship mapping:

static relationMappings() {
    return {
      profile: this.hasMany("App/Model/Cars_model",{
        filter: (builder) => {
          builder.where("name", "Mercedes");
        },
      }),
    };
  }

Some route features are also added

Route Match
Sometimes you may need to register a route that responds to multiple HTTP verbs. You may do so using the match method. Or, you may even register a route that responds to all HTTP verbs using the all method:

  Route.match(["get", "post"], "/books", 
        "UserController@process");

Route Redirect
If you are defining a route that redirects to another URI, you may use the Route redirect method. This method provides a convenient shortcut so that you do not have to define a full route or controller for performing this task.

 Route.redirect("source_url", "destination_url");

You can see the complete list of new features and updates on ExpressWebJs website.

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