Use LIKE/regex with variable in mongoid

Question

I\'m trying to find all documents whose text contains the word test. The below works fine:

@tweets = Tweet.any_of({ :text => /.*test.*/ })

H

Answer 1

searchterm = (params[:searchlogparams][:searchterm])
@tweets = Tweet.any_of({ :text => Regexp.new ("/.*"+searchterm+".*/") })

or

searchterm = (params[:searchlogparams][:searchterm])
@tweets = Tweet.any_of({ :text => /.*#{searchterm}.*/ })

Answer 2

@tweets = Tweet.any_of({ :text => Regexp.new ("/.*"+searchterm+".*/") })  

is work, but no result

@tweets = Tweet.any_of({ :text => Regexp.new (".*"+searchterm+".*") })

is ok and have result

@tweets = Tweet.any_of({ :text => /.*#{searchterm}.*/ })

is work, no result

My mongoid version is 3.1.3 and ruby version is 1.9.3

Answer 3

There is nothing wrong with the mongodb regex query. The problem is passing variable to ruby regex string. You cannot mix string with regex like normal strings

Instead

 "/.*"+searchterm+".*/"

try this

  >>searchterm = "test"
  >>"/#{searchterm}/"
  >> "/test/" 

Answer 4

@tweets = Tweet.any_of({ :text => Regexp.new (".*"+searchterm+".*") })

is ok and have result

Answer 5

This worked for me by doing:

Model.find(:all, :conditions => {:field => /regex/i})