Caching with Rails

Hi,

I’ve been reading the Rails Guide about caching and I have a few
questions about it.
I’ve read that it is not possible to cache a page with url parameters,
for instance ‘http://…/com/products/category_id=5’. Am I correct?
Isn’t there any way to be able to do so?

If caching is only able on 'conditions' when do you use caching?

Thanks
Greg

I’ve been reading the Rails Guide about caching and I have a few

questions about it.

I’ve read that it is not possible to cache a page with url parameters,

for instance ‘http://…/com/products/category_id=5’. Am I correct?

Isn’t there any way to be able to do so?

You can do it, but it depends on how you format your URLs because it makes a static HTML file for Apache to serve (and Apache won’t serve files with GET parameters in the name). For example, if your URL is:

http://www.example.com/products?category=5

This wouldn’t work because Apache automatically separates on ? and would look for a file called products.html (not your category 5 specific one).

On the other hand if your URL was:

http://www.example.com/products/category/5

Then it would work - the 5 would become 5.html in a folder called category in a folder called products.

Caching works with parameters, just not normal GET parameters like ?foo=bar.

Cheers,

Andy

Andy Jeffries wrote:

You can do it, but it depends on how you format your URLs because it
makes a
static HTML file for Apache to serve (and Apache won't serve files with
GET
parameters in the name). For example, if your URL is:

http://www.example.com/products?category=5

This wouldn't work because Apache automatically separates on ? and would
look for a file called products.html (not your category 5 specific one).

On the other hand if your URL was:

http://www.example.com/products/category/5

Then it would work - the 5 would become 5.html in a folder called
category
in a folder called products.

Caching works with parameters, just not normal GET parameters like
?foo=bar.

Cheers,

Andy

Thank you Andy for you explanation.
How do you do to make your urls look like this?

Greg

http://www.example.com/products/category/5

Then it would work - the 5 would become 5.html in a folder called

category

in a folder called products.

Thank you Andy for you explanation.

How do you do to make your urls look like this?

config/routes.rb

map.category “/products/category/:id”, :controller => “categories”, :action => “show”

How your URLs look is always a product of the Routing system.

Cheers,

Andy

Andy Jeffries wrote:

> http://www.example.com/products/category/5
>
> Then it would work - the 5 would become 5.html in a folder called
> category
> in a folder called products.

Thank you Andy for you explanation.
How do you do to make your urls look like this?

config/routes.rb

map.category "/products/category/:id", :controller => "categories",
:action
=> "show"

Does the link_tag will still look like this: link_to "my link",
products_path(:category_id => 3) ?