What is that method called? - RUBY

David Trasbo wrote:
> I need the method that has the ability to turn a long string... into a shorter string...
> My problem is that I can't remember what the method is called. I looked
> through the whole Ruby String documentation...

There's no such method in Ruby. You might be thinking of the
truncate method that's part of ActionView's TextHelper module.

Clifford Heath.

I seriously doubt this is part of standard Ruby.

You have probably seen this in ActiveSupport and/or the 'english' gem
- English::String#brief:

http://english.rubyforge.org/rdoc/cl...g.html#M000096

Cheers,
Peter

On 2008.11.11., at 10:16, David Trasbo wrote:

> I need the method that has the ability to turn a long string like
> this:
>
> Lorem ipsum dolor sit amet, consectetuer adipiscing elit. Pellentesque
> pulvinar turpis a nisi. Cras id elit. Aliquam vitae pede nec lacus
> elementum lacinia. Ut aliquam vehicula sem.
>
> into a shorter string like this:
>
> Lorem ipsum dolor sit amet, consectetuer adipiscing elit. Pellentesque
> pulvinar turpis...
>
> My problem is that I can't remember what the method is called. I
> looked
> through the whole Ruby String documentation
> (http://ruby-doc.org/core/classes/String.html) but I couldn't find it.
> Can anyone remember what it's called?
> --
> Posted via http://www.ruby-forum.com/.
>

Peter Szinek wrote:
> I seriously doubt this is part of standard Ruby.

You're right, it's not a part of the Ruby standard library:

Clifford Heath wrote:
> There's no such method in Ruby. You might be thinking of the
> truncate method that's part of ActionView's TextHelper module.

truncate is what it's called. I was actually searching for 'rails
StringHelper'...

Thanks for the replies!
--
Posted via http://www.ruby-forum.com/.

[Note: parts of this message were removed to make it a legal post.]

David Trasbo wrote:
> Peter Szinek wrote:
>
>> I seriously doubt this is part of standard Ruby.
>>
>
> You're right, it's not a part of the Ruby standard library:
>
> Clifford Heath wrote:
>
>> There's no such method in Ruby. You might be thinking of the
>> truncate method that's part of ActionView's TextHelper module.
>>
>
> truncate is what it's called. I was actually searching for 'rails
> StringHelper'...
>
> Thanks for the replies!
>

Also:

a_long_string = "Lorem ipsum dolor sit amet, consectetuer adipiscing
elit. Pellentesque pulvinar turpis a nisi. Cras id elit. Aliquam vitae
pede nec lacus elementum lacinia. Ut aliquam ehicula sem."
limit = 86
a_long_string[0, limit] << "..." #=> "Lorem ipsum dolor sit amet,
consectetuer adipiscing elit. Pellentesque pulvinar turpis..."


-Justin

perhaps this works?




string = <<END
Lorem ipsum dolor sit amet, consectetuer adipiscing elit. Pellentesque
pulvinar turpis a nisi. Cras id elit. Aliquam vitae pede nec lacus
elementum lacinia. Ut aliquam vehicula sem.
END

lead = 90

wordlist = string.split(' ')

shorttext = ''

for word in wordlist

break if(shorttext.length + word.length > lead)
shorttext = shorttext + word + " "

end

# get rid of the last space
shorttext.chop!

puts "#{shorttext}..."
--
Posted via http://www.ruby-forum.com/.

Justin Collins <justincollins@ucla.edu> writes:

> [Note: parts of this message were removed to make it a legal post.]
>
> David Trasbo wrote:
>> Peter Szinek wrote:
>>
>>> I seriously doubt this is part of standard Ruby.
>>>
>>
>> You're right, it's not a part of the Ruby standard library:
>>
>> Clifford Heath wrote:
>>
>>> There's no such method in Ruby. You might be thinking of the
>>> truncate method that's part of ActionView's TextHelper module.
>>>
>>
>> truncate is what it's called. I was actually searching for 'rails
>> StringHelper'...
>>
>> Thanks for the replies!
>>
>
> Also:
>
> a_long_string = "Lorem ipsum dolor sit amet, consectetuer adipiscing
> elit. Pellentesque pulvinar turpis a nisi. Cras id elit. Aliquam vitae
> pede nec lacus elementum lacinia. Ut aliquam ehicula sem."
> limit = 86
> a_long_string[0, limit] << "..." #=> "Lorem ipsum dolor sit amet,
> consectetuer adipiscing elit. Pellentesque pulvinar turpis..."

In general, for input strings less than the limit, you wouldn't want "..."

class String
# Return an ellided string no longer than total_length
# "hello".ellide(5) -> "hello"
# "hello there".ellide(8) -> "hello..."
def ellide total_length
if self.length > total_length
raise 'total_length must be at least 3' if total_length < 3
return self[0, total_length - 3] + '...'
else
return self
end
end
end

>
> -Justin
>

--
Brian Adkins
http://www.lojic.com/
http://lojic.com/blog/

Boris Blaadh <nejnejnej@gmail.com> writes:

> perhaps this works?
>
> string = <<END
> Lorem ipsum dolor sit amet, consectetuer adipiscing elit. Pellentesque
> pulvinar turpis a nisi. Cras id elit. Aliquam vitae pede nec lacus
> elementum lacinia. Ut aliquam vehicula sem.
> END
>
> lead = 90
>
> wordlist = string.split(' ')
>
> shorttext = ''
>
> for word in wordlist
>
> break if(shorttext.length + word.length > lead)
> shorttext = shorttext + word + " "
>
> end
>
> # get rid of the last space
> shorttext.chop!
>
> puts "#{shorttext}..."

It is nicer to break at word boundaries in some contexts. But if it's
a single word (such as a long email address), then you'd still want to
show something more than "...". Maybe you can add a check for that.

e.g. for string = 'john.smith@hisdomain.com', lead = 15

--
Brian Adkins
http://www.lojic.com/
http://lojic.com/blog/