Module: ArelExtensions::StringFunctions

Included in:
Arel::Nodes::Equality, Arel::Nodes::Function, Arel::Nodes::Grouping, Attributes, Nodes::Case
Defined in:
lib/arel_extensions/string_functions.rb

Instance Method Summary collapse

Instance Method Details

#&(other) ⇒ Object

*FindInSet function .……



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# File 'lib/arel_extensions/string_functions.rb', line 24

def &(other)
  ArelExtensions::Nodes::FindInSet.new [other, self]
end

#[](start, ind = nil) ⇒ Object 



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# File 'lib/arel_extensions/string_functions.rb', line 43

def [](start, ind = nil)
  start += 1 if start.is_a?(Integer)
  if start.is_a?(Range)
    ArelExtensions::Nodes::Substring.new [self, start.begin + 1, start.end - start.begin + 1]
  elsif start.is_a?(Integer) && !ind
    ArelExtensions::Nodes::Substring.new [self, start, 1]
  else
    ArelExtensions::Nodes::Substring.new [self, start, ind - start + 1]
  end
end

#ai_collate ⇒ Object 



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# File 'lib/arel_extensions/string_functions.rb', line 108

def ai_collate
  ArelExtensions::Nodes::Collate.new(self,nil,true,false)
end

#ai_imatches(other) ⇒ Object

accent insensitive & case insensitive



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# File 'lib/arel_extensions/string_functions.rb', line 100

def ai_imatches other # accent insensitive & case insensitive
  ArelExtensions::Nodes::AiIMatches.new(self,other)
end

#ai_matches(other) ⇒ Object

accent insensitive & case sensitive



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# File 'lib/arel_extensions/string_functions.rb', line 96

def ai_matches other # accent insensitive & case sensitive
  ArelExtensions::Nodes::AiMatches.new(self,other)
end

#blank ⇒ Object 



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# File 'lib/arel_extensions/string_functions.rb', line 173

def blank
  ArelExtensions::Nodes::Blank.new [self]
end

#ci_collate ⇒ Object 



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# File 'lib/arel_extensions/string_functions.rb', line 112

def ci_collate
  ArelExtensions::Nodes::Collate.new(self,nil,false,true)
end

#collate(ai = false, ci = false, option = nil) ⇒ Object 



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# File 'lib/arel_extensions/string_functions.rb', line 116

def collate ai = false,ci = false, option = nil
  ArelExtensions::Nodes::Collate.new(self,option,ai,ci)
end

#concat(other) ⇒ Object 



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# File 'lib/arel_extensions/string_functions.rb', line 133

def concat other
  ArelExtensions::Nodes::Concat.new [self, other]
end

#downcase ⇒ Object 



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# File 'lib/arel_extensions/string_functions.rb', line 165

def downcase
  ArelExtensions::Nodes::Downcase.new [self]
end

#edit_distance(other) ⇒ Object 



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# File 'lib/arel_extensions/string_functions.rb', line 189

def edit_distance other
  ArelExtensions::Nodes::LevenshteinDistance.new [self, other]
end

#group_concat(sep = nil, *orders, group: nil, order: nil) ⇒ Object

concat elements of a group, separated by sep and ordered by a list of Ascending or Descending



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# File 'lib/arel_extensions/string_functions.rb', line 138

def group_concat(sep = nil, *orders, group: nil, order: nil)
  if orders.present?
    warn("Warning : ArelExtensions: group_concat: you should now use the kwarg 'order' to specify an order in the group_concat.")
  end
  order_tabs = [orders].flatten.map{ |o|
    if o.is_a?(Arel::Nodes::Ascending) || o.is_a?(Arel::Nodes::Descending)
      o
    elsif o.respond_to?(:asc)
      o.asc
    end
  }.compact
  ArelExtensions::Nodes::GroupConcat.new(self, sep, group: group, order: (order || order_tabs))
end

#idoes_not_match(others, escape = nil) ⇒ Object 



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# File 'lib/arel_extensions/string_functions.rb', line 84

def idoes_not_match others, escape = nil
  ArelExtensions::Nodes::IDoesNotMatch.new self, others, escape
end

#idoes_not_match_all(others, escape = nil) ⇒ Object 



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# File 'lib/arel_extensions/string_functions.rb', line 92

def idoes_not_match_all others, escape = nil
  grouping_all :idoes_not_match, others, escape
end

#idoes_not_match_any(others, escape = nil) ⇒ Object 



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# File 'lib/arel_extensions/string_functions.rb', line 88

def idoes_not_match_any others, escape = nil
  grouping_any :idoes_not_match, others, escape
end

#imatches(others, escape = nil) ⇒ Object 



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# File 'lib/arel_extensions/string_functions.rb', line 59

def imatches others, escape = nil
  ArelExtensions::Nodes::IMatches.new self, others, escape
end

#imatches_all(others, escape = nil) ⇒ Object

def grouping_any method, others, *extra

  puts "*******************"
  puts method
  puts others.inspect
  puts extra.inspect
  puts "-------------------"
  res = super(method,others,*extra)
  puts res.to_sql
  puts res.inspect
  puts "*******************"
  res
end



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# File 'lib/arel_extensions/string_functions.rb', line 80

def imatches_all others, escape = nil
  grouping_all :imatches, others, escape, escape
end

#imatches_any(others, escape = nil) ⇒ Object 



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# File 'lib/arel_extensions/string_functions.rb', line 63

def imatches_any others, escape = nil
  grouping_any :imatches, others, escape
end

#length ⇒ Object

LENGTH function returns the length of the value in a text field.



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# File 'lib/arel_extensions/string_functions.rb', line 29

def length
  ArelExtensions::Nodes::Length.new [self]
end

#levenshtein_distance(other) ⇒ Object 



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# File 'lib/arel_extensions/string_functions.rb', line 185

def levenshtein_distance other
  ArelExtensions::Nodes::LevenshteinDistance.new [self, other]
end

#locate(val) ⇒ Object

LOCATE function returns the first starting position of a string in another string. If string1 or string2 is NULL then it returns NULL. If string1 not found in string2 then it returns 0.



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# File 'lib/arel_extensions/string_functions.rb', line 35

def locate val
  ArelExtensions::Nodes::Locate.new [self, val]
end

#ltrim(other = ' ') ⇒ Object 



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# File 'lib/arel_extensions/string_functions.rb', line 157

def ltrim other = ' '
  ArelExtensions::Nodes::Ltrim.new [self, other]
end

#md5 ⇒ Object 



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# File 'lib/arel_extensions/string_functions.rb', line 193

def md5
  ArelExtensions::Nodes::MD5.new [self]
end

#not_blank ⇒ Object 



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# File 'lib/arel_extensions/string_functions.rb', line 177

def not_blank
  ArelExtensions::Nodes::NotBlank.new [self]
end

#regexp_replace(pattern, substitute) ⇒ Object 



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# File 'lib/arel_extensions/string_functions.rb', line 129

def regexp_replace pattern, substitute
  ArelExtensions::Nodes::RegexpReplace.new self, pattern, substitute
end

#repeat(other = 1) ⇒ Object 



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# File 'lib/arel_extensions/string_functions.rb', line 181

def repeat other = 1
  ArelExtensions::Nodes::Repeat.new [self, other]
end

#replace(pattern, substitute) ⇒ Object

REPLACE function replaces a sequence of characters in a string with another set of characters, not case-sensitive.



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# File 'lib/arel_extensions/string_functions.rb', line 121

def replace pattern, substitute
  if pattern.is_a? Regexp
    ArelExtensions::Nodes::RegexpReplace.new self, pattern, substitute
  else
    ArelExtensions::Nodes::Replace.new self, pattern, substitute
  end
end

#rtrim(other = ' ') ⇒ Object 



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# File 'lib/arel_extensions/string_functions.rb', line 161

def rtrim other = ' '
  ArelExtensions::Nodes::Rtrim.new [self, other]
end

#smatches(other) ⇒ Object

accent sensitive & case sensitive



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# File 'lib/arel_extensions/string_functions.rb', line 104

def smatches other # accent sensitive & case sensitive
  ArelExtensions::Nodes::SMatches.new(self,other)
end

#soundex ⇒ Object

SOUNDEX function returns a character string containing the phonetic representation of char.



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# File 'lib/arel_extensions/string_functions.rb', line 55

def soundex
  ArelExtensions::Nodes::Soundex.new [self]
end

#substring(start, len = nil) ⇒ Object 



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# File 'lib/arel_extensions/string_functions.rb', line 39

def substring start, len = nil
  ArelExtensions::Nodes::Substring.new [self, start, len]
end

#trim(other = ' ') ⇒ Object

Function returns a string after removing left, right or the both prefixes or suffixes int argument



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# File 'lib/arel_extensions/string_functions.rb', line 153

def trim other = ' '
  ArelExtensions::Nodes::Trim.new [self, other]
end

#upcase ⇒ Object 



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# File 'lib/arel_extensions/string_functions.rb', line 169

def upcase
  ArelExtensions::Nodes::Upcase.new [self]
end