Re: [Rails] Replacing an xxx.png with a xxx.jpg in public/images OK?

Fri, 26 Feb 2010 16:49:25 -0800 

On Fri, 2010-02-26 at 16:30 -0800, RichardOnRails wrote:
> Hi ALL,
> 
> I'm building a Rails app using the app provided in Ruby On Rails
> Cookbook.  The book's app works "out of the box" after appropriate
> tweaks: adding a "log" directory, adding a root password in
> database.yml and a couple of rake executions ... which is more than I
> can say for many books.  (Just wanted to give it a plug.)
> 
> In public/images he's got a main_logo.png file which he references in
> the <body> of application.html.erb in
> ink_to image_tag('main_logo.png').
> 
> I've got a .jpg that I'd use in place of a .png because my JPEG loses
> detail when I convert to PNG.  I expect that JPEGs and GIFs and other
> major graphic encodings should work just as well in Rails as PNGs.  Is
> that true?
> 
> I ask because despite the fact that I'm using a working Rails app as
> guide,  I'm confident I'll make some mistakes I'll have to debug.  I'm
> just trying in advance to avoid one here.
----
Debugging and trying many things and causing errors is an essential part
of the learning process itself.

Rails is entirely indifferent to whatever you put into the 'image_tag'
because all it really does is create the normal <img src=""> html tag
and then it's up to the server to deliver the file and the web browser
to parse it and display it.

Also - FTR - when you say 'adding a root password in database.yml' that
immediately makes me nervous because root should never be the user of
any sql database - at least in my opinion.

Craig


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