Limiting characters/words in view - ruby on rails

Question

I am displaying recent comments on the home page of a very simple blog application I am building in Ruby on Rails. I want to limit the number of characters that are displayed fr

Answer 1

I just found another way (if you don't want to add the "...")

<%= comment.body.first(80) %>

As said in the RoR API for String:

first(limit = 1)

Returns the first character. If a limit is supplied, returns a substring from the beginning of the string until it reaches the limit value. If the given limit is greater than or equal to the string length, returns self.

comment = "1234567890"

comment.first(5)
# => "12345"

comment.first(10)
# => "1234567890"

comment.first(15)
# => "1234567890"

Answer 2

If you are using rails 4.2 or above then you can use truncate_words method.

For example:
"In a world where everything is awesome".truncate_words(3)

Output: "In a world..."

Answer 3

Try the truncate view helper

<%=h truncate(comment.body, :length => 80) %>

Answer 4

You can also use the truncate method if you want to limit the number of characters. I'm using this to display just enough characters in a bootstrap row to somewhat match the height of an image displayed in the same row.

<%= "#{message.truncate(charcount)}" %>