Class: ForestLiana::OperatorValueParser

Inherits:
Object
  • Object
show all
Defined in:
app/services/forest_liana/operator_value_parser.rb

Class Method Summary collapse

Class Method Details

.add_where(query, field, operator, value, resource) ⇒ Object 



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# File 'app/services/forest_liana/operator_value_parser.rb', line 32

def self.add_where(query, field, operator, value, resource)
  field_name = self.get_field_name(field, resource)

  operator_date_interval_parser = OperatorDateIntervalParser.new(value)
  if operator_date_interval_parser.is_interval_date_value()
    filter = operator_date_interval_parser.get_interval_date_filter()
    query = query.where("#{field_name} #{filter}")
  else
    # NOTICE: Set the integer value instead of a string if "enum" type
    # NOTICE: Rails 3 do not have a defined_enums method
    if resource.respond_to?(:defined_enums) &&
      resource.defined_enums.has_key?(field)
      value = resource.defined_enums[field][value]
    end

    where = "#{field_name} #{operator}"
    where += " '#{value}'" if value
    query = query.where(where)
  end
end

.get_field_name(field, resource) ⇒ Object 



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# File 'app/services/forest_liana/operator_value_parser.rb', line 53

def self.get_field_name(field, resource)
  if field.split(':').size < 2
    "#{resource.quoted_table_name}." +
    "#{ActiveRecord::Base.connection.quote_column_name(field)}"
  else
    association = field.split(':')[0].pluralize
    "#{ActiveRecord::Base.connection.quote_column_name(association)}." +
    "#{ActiveRecord::Base.connection.quote_column_name(field.split(':')[1])}"
  end
end

.parse(value) ⇒ Object 



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# File 'app/services/forest_liana/operator_value_parser.rb', line 4

def self.parse(value)
  operator = nil

  if value.first == '!'
    operator = '!='
    value.slice!(0)
  elsif value.first == '>'
    operator = '>'
    value.slice!(0)
  elsif value.first == '<'
    operator = '<'
    value.slice!(0)
  elsif value.include?('*')
    operator = 'LIKE'
    value.gsub!('*', '%')
  elsif value === '$present'
    operator = 'IS NOT NULL'
    value = nil
  elsif value === '$blank'
    operator = 'IS NULL'
    value = nil
  else
    operator = '='
  end

  [operator, value]
end