Class: CommaHeaven::Sqler::Column

Inherits:
Struct
  • Object
show all
Defined in:
lib/comma-heaven/sqler/column.rb

Instance Attribute Summary collapse

Instance Method Summary collapse

Instance Attribute Details

#as ⇒ Object

Returns the value of attribute as

Returns:

  • (Object) —

    the current value of as



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# File 'lib/comma-heaven/sqler/column.rb', line 5

def as
  @as
end

#attribute ⇒ Object

Returns the value of attribute attribute

Returns:

  • (Object) —

    the current value of attribute



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# File 'lib/comma-heaven/sqler/column.rb', line 5

def attribute
  @attribute
end

#parent ⇒ Object

Returns the value of attribute parent

Returns:

  • (Object) —

    the current value of parent



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# File 'lib/comma-heaven/sqler/column.rb', line 5

def parent
  @parent
end

#position ⇒ Object

Returns the value of attribute position

Returns:

  • (Object) —

    the current value of position



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# File 'lib/comma-heaven/sqler/column.rb', line 5

def position
  @position
end

Instance Method Details

#joins ⇒ Object 



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# File 'lib/comma-heaven/sqler/column.rb', line 12

def joins
  sql = join_clause
  sql << " AND #{table_alias}.#{association.klass.primary_key} IN (SELECT #{association.klass.primary_key} FROM #{association.quoted_table_name} WHERE #{model.send(:sanitize_sql, association.options[:conditions])})" if parent.respond_to?(:association) && association.options[:conditions]
  sql.gsub(/\n/, '').squeeze(' ').strip
end

#select ⇒ Object 



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# File 'lib/comma-heaven/sqler/column.rb', line 8

def select
  "#{table_alias}.#{attribute} AS #{quote(sql_as)}"
end

#sql_as ⇒ Object 



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# File 'lib/comma-heaven/sqler/column.rb', line 18

def sql_as
  return as % index if as
  return [table_alias(:singularize).gsub(/^_+/, ''), attribute].compact.join('_')
end