Rails - Nov 2013 - Restful Routing and restful versus non-restful routes

So resources :products will create 7 different restful routes for CRUD 
operations for resource products. 
For example: products GET /products(.:format) products#index

So restful route includes only controller name within itself and :id for 
operation like edit, show, update, delete.
When i create *non-restful* routes in rails for example: get 
'':controller/:action/:id'' i only can see difference that i
*must*explicitly write
:action, so that ":action" makes this route non-restful?

*So as i get this, first requirement for route(URL) to be restful is that 
route can''t contain action name?* *Question 1*

Second requirement for route to be restful is that action corresponding to 
route must "play by restful rules" in another word, 
for example a GET should not leave side-effects on the server, but just 
retrieve data. 
So if i have /products(.:format) products#index and within index action i 
saved something into DB, *than above route is just looks like restful route 
but in fact it isn''t*? *Question 2*

I know that i can pass to restful route additional parameters, for example:
link_to "Show", products_path(id: 5, a: "aaaa", b:
"bbbb") so now URL is:
products/5?a=aaaa&b=bbbb.
So am i violating restful here, or this route is still restful? *Question 3*

To me seems that i don''t need *non*-restful routes at all, when i can
make
a bunch of restful routes with construct like following?(and other similar 
construct) 
*Question 4*

resources :products do
  member do
    get ''preview''
  endend

Please don''t redirect me to http://guides.rubyonrails.org/routing.html
i read it multiple times :)

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On 18 November 2013 09:29, Srdjan Cengic
<cengasrle-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org>
wrote:
> [snip]
>  Question 1
>
> Second requirement for route to be restful is that action corresponding to
> route must "play by restful rules" in another word,
> for example a GET should not leave side-effects on the server, but just
> retrieve data.
> So if i have /products(.:format) products#index and within index action i
> saved something into DB, than above route is just looks like restful route
> but in fact it isn''t?
Whether it is restful or not is not relevant as you should not do
this.  Imagine, for example, the havoc caused when google interrogates
all the GET routes in your application.
> Question 2
>
> I know that i can pass to restful route additional parameters, for example:
> link_to "Show", products_path(id: 5, a: "aaaa", b:
"bbbb") so now URL is:
> products/5?a=aaaa&b=bbbb.
> So am i violating restful here, or this route is still restful?
It is still restful.
> Question 3
>
> To me seems that i don''t need non-restful routes at all, when i
can make a
> bunch of restful routes with construct like following?(and other similar
> construct)
> Question 4
>
> resources :products do
>   member do
>     get ''preview''
>   end
> end
So what is the question you are asking?  If the restful routes fit
your needs then use them, if they don''t then use other routes.

Colin

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