Some products have 0, 1, 2 or 3 images. How to display- basic eRB question:

rubyonrails-talk
1

So this is the bassic html w/ eRB:

<img class="list-image" src="<%= product.pic1_url %>"/>

But what if the database has a pic2_url and a pic3_url (some will have 1 picture, some 2, and some 3)?

Obviously it shouldn't display pic2_url and pic3_url if they aren't there.

And what about formatting: I've got a 400x400 box set for pictures -- if I have one picture, I'll have it take up the whole table (supposing all pictures are at least 400x400); if I have two, I'll have it put the pictures side by side (maybe breaking the table); if I have three, I'll split the table again. (and no pic_url at all leaves me with a 400px box that I might as well remove.) How do I solve this problem?

Of course, I could just point to three "Image unavailable" images.

Thanks, JD

2

So this is the bassic html w/ eRB:

<img class="list-image" src="<%= product.pic1_url %>"/>

But what if the database has a pic2_url and a pic3_url (some will have 1 picture, some 2, and some 3)?

<% if product.pic2_url %>   <img class="list-image" src="<%= product.pic2_url %>"/> <% end %>

perhaps better to model the product pictures as a list instead of hard-coding in the assumption that there will be at most 3 though. then your erb code may become:

<% product.pic_urls.each do |url| %>   <img class="list-image" src="<%=url%>"/> <% end %>

- donald