How to output text in rthml without <%=variable%>
I've been looking around for a solution to this questi开发者_StackOverflow社区on for the last couple of days. It's a simple annoyance, but I hate not knowing how to do things...
Environment: Ruby, Rails, rhtml
The Problem: When I iterate a collection in rhtml I would like to reduce the number of <% %> and <%= %> tags I use. The following seems bloated:
Example
<% @products.each do |p| %>
<%= @p.name %>
<% end %>
EDIT: how do I exclude <%= %> inside of a block?
I would much rather do:
<% @products.each do |p|
puts @p.name
end %>
Certain situations could allow for use of either... However, I know that I could do this with jsp:
<% for(int i=0; i<10;i++){
System.out.print(i);
} %>
Thanks in advance for your input.
if you want to be less verbose look at haml, with your example it will be :
- @products.each do |p|
= @p.name
<% @products.each do |p|
_erbout << @p.name
end %>
_erbout
is the default name of the variable that ERB (the class that's parsing your .rhtml template) uses to build its output. This is pretty ugly, and feels a bit hacky to me, but it works.
Use print instead of put.
Several other possibilities, depending on the context, if your view code seems too bloated:
- Use partials. E.g.:
in your main file:
<%= render(:partial => "product", :collection => products) %>
and in the partial, just use:
<%= product.name %>
Now this seems contrived for a simple example such as this but assuming something more complex it abstracts away the looping and makes the code clearer.
- Use helper methods
You could also try using something like haml to clean up the templates (along with helpers and partials).
You're going to have to use a <%= inside such a block. You can achieve the readability you want by using a <%= with a block:
<%= @products.map do |p|
p.name
end.join("\n") %>
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