SQL search


#1

How I write it in rails format? Articles.find( ???)

SELECT *, MATCH(title, body) AGAINST(’$keyword’) AS score FROM articles
WHERE MATCH(title, body) AGAINST(’$keyword’) ORDER BY score DESC


#2

On Feb 27, 2009, at 11:29 AM, Ga Ga wrote:

How I write it in rails format? Articles.find( ???)

SELECT *, MATCH(title, body) AGAINST(’$keyword’) AS score FROM
articles
WHERE MATCH(title, body) AGAINST(’$keyword’) ORDER BY score DESC

Obviously, you’d have to try it yourself, but:

match_part = sanitize_sql([‘MATCH(title, body) AGAINST(?)’, keyword])
Article.find(:all, :select => “*, #{match_part} AS score”,
:conditions => match_part, :order => ‘score DESC’)

I’m guessing that the $keyword is from Perl, but I’ve assumed that you
have a local variable called keyword. Look closely at whether the
conditions end up correct or if things get double-escaped in the final
SQL.

-Rob

Rob B. http://agileconsultingllc.com
removed_email_address@domain.invalid


#3

I get:

undefined method `sanitize_sql’


#4

Ga Ga wrote:

I get:

undefined method `sanitize_sql’

Help ?


#5

On Feb 27, 2009, at 11:42 AM, Rob B. wrote:

match_part =
self.class.

Rob B. http://agileconsultingllc.com
removed_email_address@domain.invalid

Sorry, if you look at the docs, sanitize_sql is a protected class
method of ActiveRecord::Base

-Rob

Rob B. http://agileconsultingllc.com
removed_email_address@domain.invalid


#6

Rob B. wrote:

On Feb 27, 2009, at 11:42 AM, Rob B. wrote:

match_part =
self.class.

Rob B. http://agileconsultingllc.com
removed_email_address@domain.invalid

Sorry, if you look at the docs, sanitize_sql is a protected class
method of ActiveRecord::Base

Is there some alternative way to it, and not to use protected classes?


#7

On Feb 27, 2009, at 2:56 PM, Ga Ga wrote:

Is there some alternative way to it, and not to use protected classes?

It’s not a protected “class”, it’s a protected method in the class
ActiveRecord::Base which your Article class is a sub-class. If you
don’t like the form of the call, make your own class method like this:

class Article
def self.keyword_find(keyword)
match_part = sanitize_sql([‘MATCH(title, body) AGAINST(?)’,
keyword])
find(:all, :select => “*, #{match_part} AS score”,
:conditions => match_part, :order => ‘score DESC’)
end
end

Then just call “normally”:

good_articles = Article.keyword_find(‘chocolate’)

Does that make you happier? There’s nothing wrong with using
sanitize_sql, you just need to call it from the Article class rather
than ‘directly’.

-Rob

Rob B. http://agileconsultingllc.com
removed_email_address@domain.invalid