Module: ObjectidColumns::ActiveRecord::Relation

Extended by:
ActiveSupport::Concern
Defined in:
lib/objectid_columns/active_record/relation.rb

Overview

This module gets included into ActiveRecord::Relation; it is responsible for modifying the behavior of where. Note that when you call where directly on an ActiveRecord class, it (through various AR magic) ends up calling ActiveRecord::Relation#where, so this takes care of that, too.

Instance Method Summary collapse

Instance Method Details

#where(*args) ⇒ Object

There is really only one case where we can transparently modify queries – where you’re using hash syntax:

model.where(:foo_oid => <objectID>)

If you’re using SQL string syntax:

model.where("foo_oid = ?", <objectID>)

…then there’s no way to reliably determine what should be converted as an ObjectId (and, critically, to what format – hex or binary – we should convert it). As such, we leave the responsibility for that case up to the user.



22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
 
# File 'lib/objectid_columns/active_record/relation.rb', line 22

def where(*args)
  # Bail out if we don't have any ObjectId columns
  return super(*args) unless respond_to?(:has_objectid_columns?) && has_objectid_columns?
  # Bail out if we're not using the Hash form
  return super(*args) unless args.length == 1 && args[0].kind_of?(Hash)

  query = { }
  args[0].each do |key, value|
    # #translate_objectid_query_pair is a method defined on the ObjectidColumns::ObjectidColumnsManager, and is
    # called via the delegation defined in ObjectidColumns::HasObjectidColumns.
    (key, value) = translate_objectid_query_pair(key, value)
    query[key] = value
  end

  super(query)
end