How to clone a Model?

[bymoe]

Let's say I have a simple Model with observable id.

class TodoStore {
  todos = [];
  id: generateId();


  get completedTodosCount() {
    return this.todos.filter(
      todo => todo.completed === true
    ).length;
  }
}

const todoStore = new TodoStore();

now I want to add a feature to clone this todo just by duplicate this exact model with new generated id with it's todos and any extra infos.

How to do that? .toJS and .createViewModel doesn't seem to work!

[kubk]

It's up to you how to implement the clone method according to your business rules:

class TodoStore {
  ...
  
  clone() {
    const clone = new TodoStore();
    clone.todos = this.todos; // Or use Object.assign here
    return clone;
  }
}

The logic of duplication might be different. For example, I could use autoincrement ID instead of UUID:

class TodoStore {
  ...
  
  clone() {
    const clone = new TodoStore(this.id + 1);
    clone.todos = this.todos;
    return clone;
  }
}

[bymoe]

Thank you so much @kubk,
I just misunderstood how classes work. everything's clear now!