> I''m little confused about the MVC, I don''t really know
how to use it, as
> I understand the controller are used for events, and the view is what
> the visitor will see, and the model where you assign the variables which
> view would use?
>
> Is this correct?
> If yes, then why do I validate things in Model (below)? isn''t this
a
> event which should be in the controller?
>
> def validate
> errors.add(:username, "must not be john") if username ==
"john"
> end
>
> I hope someone can give me a link or anything to understand where things
> should be (MVC)?
This is how I think of things...
Models - this is lower level business logic that is applied to well, your
models. So if you want to enforce that your Person model has a middle
initial, this is the place to do it because to interact with Person''s
you
*have* to go through the model to do it. So, regardless of whether the
request is coming in from the website, an email, or script/console you can
enforce rules here.
Controller - this is higher level and really only relevant as far as your
website is concerned. So this is where the logic goes to say display a
Person and setup any other variables you want to display in your view.
View - this is displayed to the end user and has the variables created in
the controller available to it.
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