Ruby on Rails

On May 2, 2015, at 1:23 PM, Elizabeth McGurty <emcgurty2@gmail.com> wrote:

> SORRY about the previous.... How does one edit here after POST?

This is a mailing list (even if you are looking at it through one of the many Web interfaces), and you can't edit mail after you send it.

>
>
> Working with Rails 3.0
>
> From numerous controllers with associated views, I need to display images.
>
> In the views to retrieve an images I have:
>
> <img src="<%= get_image_path(@object.image_file_name) %> />
>
> I have also used the Rails <img src counterpart...
>
> get_image_path is defined in the Application helper:
>
> module ApplicationHelper
> def get_image_path(sought_image_file_name)
>
> return_string = ''
> unless sought_image_file_name.blank? ## although I do testing for blank? image_file_name in the erb view
> return_string = "#{Rails.application.root}/public/images/item_images/" + sought_image_file_name
> ### Have tried return_string "../public and "./public and these have not worked
> end
> return return_string
> end
> ...
>
> But I keep getting the error:
>
> Started GET "/home/echomarket/echomarket.org/public/images/item_images/zv37bNYgL25LisYvnGfGkKMndfm7ZD_Chrysanthemum.jpg" for ...
>
> ActionController::RoutingError (No route matches "/home/echomarket/echomarket.org/public/images/item_images/zv37bNYgL25LisYvnGfGkKMndfm7ZD_Chrysanthemum.jpg"):
>
> The file definitely exists in that path, per FIleZilla and Putty

When you are trying to access a file through a Web browser, you need a **web root**-relative path, not a **filesystem root**-relative path. The web root path to a static file begins at public, so any file that exists in the your-project-folder/public folder would be at /.

This file:

/home/echomarket/echomarket.org/public/images/item_images/zv37bNYgL25LisYvnGfGkKMndfm7ZD_Chrysanthemum.jpg

Would have this URL (assuming you were accessing it from http://echomarket.org):

http://echomarket.org/images/zv37bNYgL25LisYvnGfGkKMndfm7ZD_Chrysanthemum.jpg

The Rails.root starting point is only needed if you are trying to access the file directly from your server on its filesystem using File.open or similar.

Walter

>
> I do not understand the tie between routes.rb and multiple controllers....
>
> Thanks,
>
> Liz
>
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