Module: Card::Query::Value::MatchValue

Included in:
Card::Query::Value
Defined in:
lib/card/query/value/match_value.rb

Overview

handling for match operator

Instance Method Summary collapse

Instance Method Details

#escape_regexp_characters ⇒ Object 



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# File 'lib/card/query/value/match_value.rb', line 59

def escape_regexp_characters
  match_term.gsub!(/(\W)/, '\\\\\1')
end

#exact_name_match(field) ⇒ Object 



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# File 'lib/card/query/value/match_value.rb', line 22

def exact_name_match field
  return false unless match_prefix == "=" && field.to_sym == :name
  "#{field_sql field} = #{quote match_term.to_name.key}"
end

#match_field(field) ⇒ Object 



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# File 'lib/card/query/value/match_value.rb', line 27

def match_field field
  fld = field.to_sym == :name ? "name" : standardize_field(field)
  "#{@query.table_alias}.#{fld}"
end

#match_prefix ⇒ Object 



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# File 'lib/card/query/value/match_value.rb', line 41

def match_prefix
  @match_prefix || (parse_match_term_and_prefix && @match_prefix)
end

#match_sql(field) ⇒ Object 



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# File 'lib/card/query/value/match_value.rb', line 17

def match_sql field
  exact_name_match(field) ||
    "#{match_field field} #{connection.match match_value}"
end

#match_term ⇒ Object 



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# File 'lib/card/query/value/match_value.rb', line 37

def match_term
  @match_term || (parse_match_term_and_prefix && @match_term)
end

#match_value ⇒ Object 



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# File 'lib/card/query/value/match_value.rb', line 32

def match_value
  escape_regexp_characters unless match_prefix == "~~"
  quote match_term
end

#parse_match_term_and_prefix ⇒ Object

if search val is prefixed with “~~”, it is a MYSQL regexp (and will be passed through)

Otherwise, all non-alphanumeric characters are escaped.

A “~” prefix is ignored.



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# File 'lib/card/query/value/match_value.rb', line 52

def parse_match_term_and_prefix
  raw_term = Array.wrap(@value).join(" ")
  matches = raw_term.match self.class.match_term_and_prefix_re
  @match_prefix = matches[:prefix] || ""
  @match_term = matches[:term] || ""
end