# \[rails\] pulire il path generato da image\_tag

**URL:** <https://www.ruby-forum.com/t/rails-pulire-il-path-generato-da-image-tag/110072>\
**Category:** IT\
**Created:** [July 22, 2007, 4:44pm UTC](https://www.ruby-forum.com/t/rails-pulire-il-path-generato-da-image-tag/110072 "2007-07-22T16:44:47Z")\
**Posts on this page:** 4\
**Page:** 1

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**Author:** ![stratboy](https://www.ruby-forum.com/letter_avatar_proxy/v4/letter/s/838e76/32.png) [@stratboy](https://www.ruby-forum.com/u/stratboy)\
**Post date:** [July 22, 2007, 4:44pm UTC](https://www.ruby-forum.com/t/rails-pulire-il-path-generato-da-image-tag/110072/1 "2007-07-22T16:44:47Z")

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Salve di nuovo. Qualcuno sa perché image\_tag aggiunge un numero in  
parametro nell’url generato?

es. \<%= image\_tag ‘iso.jpg’, {:size =\> ‘200x304’, :border =\> ‘0’} %\>

genera:

/images/iso.jpg?1185114524

E’ per la cache?  
In ogni caso, come si fa a prevenire la cosa?

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**Author:** ![stratboy](https://www.ruby-forum.com/letter_avatar_proxy/v4/letter/s/838e76/32.png) [@stratboy](https://www.ruby-forum.com/u/stratboy)\
**Post date:** [July 26, 2007, 12:46am UTC](https://www.ruby-forum.com/t/rails-pulire-il-path-generato-da-image-tag/110072/2 "2007-07-26T00:46:14Z")

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On Sun, 22 Jul 2007 16:44:47 +0200, Luca R. wrote:

> E’ per la cache?  
> In ogni caso, come si fa a prevenire la cosa?

È lì solo in dev mode; quando passi a production sparisce (fa lo stesso con  
i javascript)

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<div class="post-metadata">

**Author:** ![stratboy](https://www.ruby-forum.com/letter_avatar_proxy/v4/letter/s/838e76/32.png) [@stratboy](https://www.ruby-forum.com/u/stratboy)\
**Post date:** [July 26, 2007, 9:59am UTC](https://www.ruby-forum.com/t/rails-pulire-il-path-generato-da-image-tag/110072/3 "2007-07-26T09:59:17Z")

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Ok capito! Grazie!

David wrote:

> On Sun, 22 Jul 2007 16:44:47 +0200, Luca R. wrote:
> 
> > E’ per la cache?  
> > In ogni caso, come si fa a prevenire la cosa?
> 
> � l� solo in dev mode; quando passi a production sparisce (fa lo stesso con  
> i javascript)

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<div class="post-metadata">

**Author:** ![stratboy](https://www.ruby-forum.com/letter_avatar_proxy/v4/letter/s/838e76/32.png) [@stratboy](https://www.ruby-forum.com/u/stratboy)\
**Post date:** [September 25, 2007, 10:59pm UTC](https://www.ruby-forum.com/t/rails-pulire-il-path-generato-da-image-tag/110072/4 "2007-09-25T22:59:51Z")

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On 22/07/07, David [removed\_email\_address@domain.invalid](mailto:removed_email_address@domain.invalid) wrote:

> > E’ per la cache?  
> > In ogni caso, come si fa a prevenire la cosa?
> 
> È lì solo in dev mode; quando passi a production sparisce (fa lo stesso con i javascript)

Credo che ci sia sempre. Il numero cambia quando il file è stato  
cambiato - così il browser dovrebbe scaricare il file di nuovo invece  
di usare quello nel suo cache.