[Rails] What is the difference between new and build?

[Manoj Kumar]

What is the difference between

parent.children << child.new

and

parent.children.build(params[:child])
--
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[Sharagoz]

In the first one, the child is saved right away.
In the second, the child is not saved until the parent is saved

You may find this usefull:
http://blog.mrbrdo.net/2009/10/27/ruby-on-rails-new-vs-create-vs-build/

On Apr 23, 9:38 am, Manoj Kumar <li...@ruby-forum.com> wrote:
> What is the difference between
>
> parent.children << child.new
>
> and
>
> parent.children.build(params[:child])
> --

> Posted viahttp://www.ruby-forum.com/.

[Manoj Kumar]

Sharagoz wrote:
> In the first one, the child is saved right away.
> In the second, the child is not saved until the parent is saved
>
> You may find this usefull:
> http://blog.mrbrdo.net/2009/10/27/ruby-on-rails-new-vs-create-vs-build/

Thanks Sharagoz. I got some idea about this.
--
Posted via http://www.ruby-forum.com/.

[Francesco Mari]

Actually if the parent is not persisted, the shovel operator does not save data on db.