Replace words to be bold for each search word

Ruby
1

I have two strings:

The first string with dynamic content:
@string = “this is the example of the text”

The second one includes search words:
@search = “example text”

How can I do that it prints the search words with bold?

Result:
this is the example of the example

2

Mark T. wrote:

Result:
this is the example of the example

Hi,

You can use String#gsub to find and replace the words you want. The
example you have given could be solved by the following script:

Start code

def highlight(text,search_string)
keywords = search_string.squeeze.strip.split(" “).compact.uniq
matcher = Regexp.new( ‘(’ + keywords.join(”|") + ‘)’ )
highlighted = text.gsub(matcher) { |match| “#{match}” }
return highlighted
end

text = “This is an example of the text.”
search = “example text”
puts highlight(text,search)

=> This is an example of the text.

End code

There are probably plenty of opportunities to optimize and add defensive
coding, such as stripping out regexp-meaningful characters from the
search string, but this should be a start.

Cheers,

Wes ‘Narnach’ Oldenbeuving

3

Thanks for your answer.
I have now tried, but it only sets the first search word bold not the
others.

I´m a newbie for this and don´t know what the problem can be…

/regards,

mark

4

Mark T. wrote:

Thanks for your answer.
I have now tried, but it only sets the first search word bold not the
others.

I´m a newbie for this and don´t know what the problem can be…

/regards,

mark

I want to correct myself. It works for every search words, but they have
to be directly after each other.

It works for example:
text = “This is an example text.”
search = “example text”

here are “example text” bold

but not for:
text = “This is an example of the text.”
search = “example text”

here is only “example” bold

Any idea?

Regards,

Mark

5

search = “example text”

here is only “example” bold

Any idea?

I can not reproduce the behaviour you are getting using my highlight
method. Can you post the relevant parts of your (test) code you use to
get these results?

I added more sentences and another search string and they produce the
desired behaviour. I’m testing with ruby 1.8.6p111.

Code

def highlight

…

text = “This is an example of the text.”
text2 = “This is an example text.”
text3 = “This is another text used as an example for testing.”

search = “example text”
search2 = “test text”

puts highlight(text,search)

=> This is an example of the text.

puts highlight(text2,search)

=> This is an example text.

puts highlight(text3,search2)

=> This is another text used as an example for testing.

End code

Cheers,

Wes

6

Well I´m using it together with some ajax search from a database.
Here´s my code:

search_controller.rb

def live_search
$KCODE = ‘latin1’
@code = $KCODE
a1 = “%”
a2 = “%”
@searchstring_name_temp = params[:searching]
@searchstring_name = @searchstring_name_temp.rstrip.gsub(" “, “%’
AND name LIKE '%”)
@searchstring_sku_temp = params[:searching]
@searchstring_sku = @searchstring_sku_temp.rstrip.gsub(” ", “%’ AND
sku LIKE '%”)

@results = Product.find_by_sql(“SELECT * FROM products WHERE name
LIKE’”+a1+@searchstring_name+a2+"’ OR sku
LIKE’"+a1+@searchstring_sku+a2+"’ order by name asc LIMIT 0,50;")

@results = Product.find_by_sql(:all, :conditions => [ "name LIKE

?", a1+@searchstring+a2], :limit => 50)
@number_match = @results.length
render(:layout => false)
end

def highlight(text,search_string)
keywords = search_string.squeeze.strip.split(" “).compact.uniq
matcher = Regexp.new( ‘(’ + keywords.join(”|") + ‘)’ )
highlighted = text.gsub(matcher) { |match| “#{match}” }
return highlighted
end

live_search.rb

<%= @searchstring %>
<% if @results.empty? %>
not found!
<% else %>
found <%= @number_match %> time(s)!

<% @text = “This is an example of the text.”
@search = “example text” %>
<%= highlight(@text,@search) %>

<% @results.each do |row| %>

<% end %>

sku

name

<%= highlight(row.sku.capitalize,@searchstring_name_temp) %> <%= highlight(row.name.capitalize,@searchstring_name_temp) %>
<% end %>