Frederick Cheung wrote:
>> In this case the partial is longer than the {some_partial} and some of
>> the second instance of the partial disappears. How can I force Ruby to
>> replace the characters between to positions with a longer string?
>
> You could fiddle with insert or something like that. There is another
> way of doing it:
> Say you've determine the two sections to replace are between positions
> 20 and 40 and then between 100 and 120
> you would do
>
> result = ""
> result << original_string[0, 20]
> result << render of first section
> result << original_string[40, 60]
> result << render of last section
> result << original_string[120, original_string.length - 120
That's seems a little complicated (and I don't see the flexibility of
it, either) but now I'm using the String#insert and at the end I do a
String#gsub to remove the {some_partial foo:bar}'s.
So my final method looks like this:
==========
def dropify(content)
s = StringScanner.new(content)
drops = Array.new
while s.scan_until(/\{/)
drop = {}
drop[:from] = s.pointer - 1
drop[:arguments] = {}
drop[:partial] = s.scan(/\w+/)
s.skip /\s+/
while argument = s.scan(/\w+:\w+/)
name, value = argument.split(/:/)
drop[:arguments][name.to_sym] = value
s.skip /\s+/
end
s.skip_until /\}/
drops << drop
end
drops.reverse!
drops.each do |drop|
content.insert(drop[:from], render(:partial =>
"drops/#{drop[:partial]}", :locals => drop[:arguments]))
end
content.gsub!(/\{\w+.*\}/, "")
content
end
==========
Thanks for your help! I hope some of you can use this method as well.
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