Module: SearchableBy::Util

Defined in:
lib/searchable_by/util.rb

Class Method Summary collapse

Class Method Details

.build_clauses(columns, values) ⇒ Object 



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# File 'lib/searchable_by/util.rb', line 30

def self.build_clauses(columns, values)
  values.map do |value|
    group = columns.map do |column|
      column.build_condition(value)
    end.tap(&:compact!)
    next if group.empty?

    clause = group.inject(&:or)
    clause = clause.not if value.negate
    clause
  end.tap(&:compact!)
end

.norm_values(query, min_length: 0) ⇒ Object 



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# File 'lib/searchable_by/util.rb', line 3

def self.norm_values(query, min_length: 0)
  values = []
  query  = query.to_s.dup

  # capture any phrases inside double quotes
  # exclude from search if preceded by '-'
  query.gsub!(/([-+]?)"+([^"]*)"+/) do |_|
    term = Regexp.last_match(2)
    negate = Regexp.last_match(1) == '-'

    values.push Value.new(term, negate, true) unless term.blank? || term.length < min_length
    ''
  end

  # for the remaining terms remove sign if precedes
  # exclude term from search if sign preceding is '-'
  query.split.each do |term|
    negate = term[0] == '-'
    term.slice!(0) if negate || term[0] == '+'

    values.push Value.new(term, negate, false) unless term.blank? || term.length < min_length
  end

  values.uniq!
  values
end