String concatenation but with a minor twist

Rails
1

Hello,

I’m just starting out with RoR and have been playing around with making
my own blog using RoR as a quick way of getting my feet wet. RoR is neat
isn’t it! Liking the link_to etc helpers, seems such a good way of doing
things.

Anyway, my little problem goes like this:

I want a link that says Comments (#of comments), for instance “Comments
(2)”.

To make my link without the number, I have used:

<%= link_to ‘Comments’, {:action => ‘show’, :id => post, :anchor =>
‘comments’}, :class => ‘comments’ %>

And I know that:

<%= post.comments.count %>

tells me how many comments are for this post. (I’m looping through a
load, so the :id exists etc.)

How do I do this?

<%= link_to ‘Comments (post.comments.count)’, {:action => ‘show’, :id =>
post, :anchor => ‘comments’}, :class => ‘comments’ %>

so that the code actually executes? I can’t work it out!

Thanks!

2

On 23 Dec 2007, at 19:26, Richard Brashaw wrote:

How do I do this?

<%= link_to ‘Comments (post.comments.count)’, {:action =>
‘show’, :id =>
post, :anchor => ‘comments’}, :class => ‘comments’ %>

If you have a string delimited with double quotes (or equivalent) you
can embed bits of ruby with #{}, for example
“Hello #{person.name}”

Fred

3

Richard Brashaw wrote:

How do I do this?

<%= link_to ‘Comments (post.comments.count)’, {:action => ‘show’, :id =>
post, :anchor => ‘comments’}, :class => ‘comments’ %>

so that the code actually executes? I can’t work it out!

Thanks!

For all ruby code, you can execute ruby is a string like so:

“Comments #{post.comments.count}” #=> Comments 3

Note the double quotes, single quote string will not allow this. You
can also just use +, alhtough #{} is generally cleaner.

'Comments ’ + post.comments.count.to_s

4

Frederick C. wrote:

On 23 Dec 2007, at 19:26, Richard Brashaw wrote:

How do I do this?

<%= link_to ‘Comments (post.comments.count)’, {:action =>
‘show’, :id =>
post, :anchor => ‘comments’}, :class => ‘comments’ %>

If you have a string delimited with double quotes (or equivalent) you
can embed bits of ruby with #{}, for example
“Hello #{person.name}”

Fred

Thank you so much! I remember seeing that before somewhere now!