String differences between ruby 1.8 & 1.9.3

Rails
1

Using Rails 3.1.1 and trying to switch over to Ruby 1.9.3-p125 (I’ve got
1.9.3-p125 running via NGINx and 1.8.7 running via webrick so I can side
by side).

I’ve got the following in my ‘host’ model (activeldap but I don’t that
matters)
def hostipnumbers_columnized
if self.ipHostNumber == nil then
results = []
else
results = self.ipHostNumber.to_a.sort {|a,b| a <=> b }.collect {
|ipnumber| ipnumber + “\n” }
end
return results
end

Note: had to add ‘.to_a’ to the method because sort is no longer a

string option and in 1.8.7 when only 1 ipHostNumber is returned, it’s
just a simple string but ruby 1.8.7 never complained but ruby 1.9.3
comes to a screeching halt

Anyway, in my view, I’ve got…

<%= text_area ‘host’, ‘hostipnumbers_columnized’, :cols => ‘30’, :rows
=> ‘8’ %>

which when running on 1.8.7 was never an issue. Each ip address was put
onto a new line because of the ‘\n’ like this:
10.200.0.100
208.100.300.100

but when running on 1.9.3-p125 the text_area shows the array with all of
it’s raw markup like this:
[“10.200.0.100\n”, “208.100.300.100\n”]

I’ve done various things such as flattening, joining, etc. the
hostipnumbers_columnized but it appears impossible to get them to
display on individual lines in ruby-1.9.3 - without even considering
code that will work equally as well with 1.8.7

Any suggestions?

–
Craig W. ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
[email protected]
1.800.869.6908 ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
www.ttiassessments.com

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2

On Tue, Mar 6, 2012 at 13:41, Craig W. [email protected]
wrote:

display on individual lines in ruby-1.9.3 - without even considering
code that will work equally as well with 1.8.7

Any suggestions?

join() seems to work fine for making the string suitable:

$ irb
ruby-1.9.3-head :001 > x = [“10.200.0.100\n”, “208.100.300.100\n”]
=> [“10.200.0.100\n”, “208.100.300.100\n”]
ruby-1.9.3-head :002 > x.join
=> “10.200.0.100\n208.100.300.100\n”
ruby-1.9.3-head :003 > puts x.join
10.200.0.100
208.100.300.100
=> nil
ruby-1.9.3-head :004 > ^D

Would it cause problems elsewhere if hostipnumbers_columnized were to
return results.join? What do you get in the text_area if you do that?

-Dave

–
Dave A.: Available Cleared Ruby on Rails Freelancer
(NoVa/DC/Remote) – see www.DaveAronson.com, and blogs at
www.Codosaur.us, www.Dare2XL.com, www.RecruitingRants.com

3

For the simple reason that single quotes in Ruby do not allow for string
interpolation (such as \r and \n), while double quotes do.

4

sure but that was in the model and by the time the ‘string’ reached the
view, the \r and \n were ‘bare’ (no quotes) so in my mind, they should
not have been a factor at all.

5

On Mar 6, 2012, at 12:23 PM, Dave A. wrote:

I’ve done various things such as flattening, joining, etc. the
=> [“10.200.0.100\n”, “208.100.300.100\n”]
ruby-1.9.3-head :002 > x.join
=> “10.200.0.100\n208.100.300.100\n”
ruby-1.9.3-head :003 > puts x.join
10.200.0.100
208.100.300.100
=> nil
ruby-1.9.3-head :004 > ^D

Would it cause problems elsewhere if hostipnumbers_columnized were to
return results.join? What do you get in the text_area if you do that?

.join("\r\n") did the trick. Needed to use double quotes and not single
quotes (don’t understand why).

Thanks… actually just stumbled onto this and was going back to my
e-mail program to give it the old Roseanne Rosannadanna and saw your
suggestion and the answer is yes (above)

Thanks

Craig