I'd like to change a string, for example, "something" and turn it into
an object reference. For example:
I have string "something," now I'd like to take that and turn it into
something = "some other string"
Is this possible? Thanks in advance for any help.
--
Posted via http://www.ruby-forum.com/.
I'm not sure how you'd do it otherwise, but using Rails I do it like this:
c = "foo".singularize.camelize.constantize
bar = c.new
On 3/3/08, Mariko C. <lessthaneloquent@yahoo.com> wrote:
I'd like to change a string, for example, "something" and turn it into
an object reference. For example:I have string "something," now I'd like to take that and turn it into
something = "some other string"
Is this possible? Thanks in advance for any help.
--
Greg Donald
http://destiney.com/
Mariko C. wrote:
I'd like to change a string, for example, "something" and turn it into
an object reference. For example:I have string "something," now I'd like to take that and turn it into
something = "some other string"
Is this possible? Thanks in advance for any help.
Meta-programming to the rescue!
#!/usr/bin/env ruby
a = "aString"
eval(a + " = 5")
puts aString
--
Posted via http://www.ruby-forum.com/\.
If I understand you properly, you have the name of a variable in a
string, and you want to use that string to fetch the actual variable
by that name.
What you want is Object#instance_variable_get:
@a = "@b"
@b = ["this is a test"]
instance_variable_get(@a)
=> ["this is a test"]
Note that the @ is important. You can always prepend it as needed:
instance_variable_get("@" + @a)
Christopher
On 3/3/08, Mariko C. <lessthaneloquent@yahoo.com> wrote:
I'd like to change a string, for example, "something" and turn it into
an object reference. For example:I have string "something," now I'd like to take that and turn it into
something = "some other string"
Is this possible? Thanks in advance for any help.
Joshua Ballanco wrote:
Meta-programming to the rescue!
#!/usr/bin/env ruby
a = "aString"
eval(a + " = 5")
puts aString
Hi Joshua. I tried this through irb and it works fine, but it gives me
an "undefined local variable" error through Ruby on Rails. Any idea how
to get this to work?
--
Posted via http://www.ruby-forum.com/\.
Hi,
On Tue, Mar 4, 2008 at 6:50 PM, Mariko C. <lessthaneloquent@yahoo.com> wrote:
Hi Joshua. I tried this through irb and it works fine, but it gives me
an "undefined local variable" error through Ruby on Rails. Any idea how
to get this to work?
Can you show us the code? Possibly a variable name was misspelled.
Arlen