Class: OrderQuery::SQL::Column

Inherits:
Object
  • Object
show all
Defined in:
lib/order_query/sql/column.rb

Overview

A column in the given scope.

Instance Attribute Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(scope, column) ⇒ Column

Returns a new instance of Column.



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# File 'lib/order_query/sql/column.rb', line 9

def initialize(scope, column)
  @scope = scope
  @column = column
end

Instance Attribute Details

#column ⇒ Object (readonly)

Returns the value of attribute column.



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# File 'lib/order_query/sql/column.rb', line 7

def column
  @column
end

#scope ⇒ Object (readonly)

Returns the value of attribute scope.



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# File 'lib/order_query/sql/column.rb', line 7

def scope
  @scope
end

Instance Method Details

#column_name ⇒ Object 



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# File 'lib/order_query/sql/column.rb', line 14

def column_name
  @column_name ||= begin
    sql = column.custom_sql
    if sql
      sql.respond_to?(:call) ? sql.call : sql
    else
      "#{connection.quote_table_name(scope.table_name)}."\
      "#{connection.quote_column_name(column.name)}"
    end
  end
end

#quote(value) ⇒ Object 



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# File 'lib/order_query/sql/column.rb', line 26

def quote(value)
  connection.quote value
end