Displaying message if no photo present...

Question

I am using the code:

<%= image_tag site.photo.url(:small) if site.photo.file? %>

to tell my app to display nothing if there is no photo associated with a particular post (site in this case). Is there a way to render a message along w/ this. For instance "no image with the post". I tried simply doing

<%= if site.photo.file? %>
  <p> no image with this site </p>
<% end %> 

But that doesn't seem to work. New to ruby and rails if you can't tell.

Answer 1

A real simple way would be to create a small little helper:

def show_photo_if_exists(photo)
  photo.file? ? image_tag photo.url(:small) : "No image with this site"
end

Then in your view call:

<%= show_photo_if_exists(site.photo) %>

Answer 2

Hey Brandon, try this:

<%= image_tag(site.photo.url(:small)) rescue "<p>No image</p>" %>

Answer 3

You're on the right track, but missing a bit of logic you want to display it only if site.photo.file? returns false, so you would need to use this in your view:

<%= if !site.photo.file? %>
  <p> no image with this site </p>
<% end %> 

(note the bang! in front of site.photo.file? which will invert the logic.)

Answer 4

Your code will output no image with this site when there is a photo. Use this instead:

<% unless site.photo.file? %>
  <p> no image with this site </p>
<% end %>

or even better:

<% if site.photo.file? %>
  <%= image_tag site.photo.url(:small) %>
<% else %>
  <p> no image with this site </p>
<% end %>