Rails loop and .join method

Question

I have project and city table, and many-to-many relation between.

I want in html to get list of cities names, divided with ", ".

I tried with this:

<%= @project.cities(&:name).join(", ") %>

But I get (I think) object like this:

#<City:0x103886748>

Where I made a mistake? :|

P.S. Explanation:

I have @project that have one or more cities. I want to loop through cities and print names like this: New York, Boston, Belgrade (without comma on the end).

fl00r · Accepted Answer · 2011-04-20 14:20:05Z

3

You've forgot map here

<%= @project.cities.map(&:name).join(", ") %>

edited Apr 20, 2011 at 14:20

answered Apr 20, 2011 at 14:08

fl00r

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Comments

Patrick Connor · Accepted Answer · 2011-04-26 17:19:30Z

0

There is also a very cool built in helper to do that.

to_sentence

http://api.rubyonrails.org/classes/Array.html#method-i-to_sentence

<%= @project.cities(&:name).map.to_sentence %>

answered Apr 26, 2011 at 17:19

Patrick Connor

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