Gsub HELP

Ruby
1

Hi all
I am not Expert at Rails or Ruby
I have a string …it contains text and images also…
from that string i want to replace the images into empty space…that
is images Has to Be Removed.
I tried to solve By using string.gsub…But doesn’t Work
I tried like below

item.description = item.description.gsub("img src ",’’)
So any guru can give Me solution…

2

Newb N. wrote:

Hi all
I am not Expert at Rails or Ruby
I have a string …it contains text and images also…
from that string i want to replace the All The Images Into
Empty>space…that is images Has to Be Removed.

I tried like below

item.description = item.description.gsub(/<img.src=".".?/>/,’ ')

Using This Regular Expression I can able to Reomve Only The First

Occurrences of The Images,But I Need TO Remove All Occurences Of The Images

So Any Guru Can give Me solution…

3

On Sat, Aug 23, 2008 at 9:06 AM, Newb N. [email protected] wrote:

Newb N. wrote:

Hi all
I am not Expert at Rails or Ruby
I have a string …it contains text and images also…
from that string i want to replace the All The Images Into
Empty>space…that is images Has to Be Removed.

I tried like below

item.description = item.description.gsub(/<img.src=".".?/>/,’ ')
The . stays for any character, as such your regular expression seems
to be way too greedy.
This however should not harm too much if there is only one img tag in
one line, although backtracking
might be a performance issue. I do however fail to understand the
behavior you described.
Anyway, I believe the following regex should do fine:

item.description.gsub! /<img.*?>/, “”

HTH
Robert

–
http://ruby-smalltalk.blogspot.com/

There’s no one thing that’s true. It’s all true.

4

The . stays for any character, as such your regular expression seems
to be way too greedy.
This however should not harm too much if there is only one img tag in
one line, although backtracking
might be a performance issue. I do however fail to understand the
behavior you described.
Anyway, I believe the following regex should do fine:

item.description.gsub! /<img.*?>/, “”

HTH
Robert

–
http://ruby-smalltalk.blogspot.com/

There’s no one thing that’s true. It’s all true.

thanks a lot
it works

5

item.description = item.description.gsub(/<img.src=".".?/>/,’ ')

Using This Regular Expression I can able to Reomve Only The First

Occurrences of The Images,But I Need TO Remove All Occurences Of The Images

How did you do with the >10 replies you got before? Did Hpricot work
out?