Module: QueryDam

Defined in:
lib/query_dam.rb,
lib/query_dam/version.rb,
lib/query_dam/concerns/trackable.rb

Defined Under Namespace

Modules: Trackable

Constant Summary collapse

QUERY_EXPIRE = 
5.minutes
VERSION = 
'0.1.2'

Class Method Summary collapse

Class Method Details

.get_updates(key) ⇒ Object 



23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
 
# File 'lib/query_dam.rb', line 23

def get_updates(key)
  query_hash = Redis::HashKey.new(key)
  return nil unless query_hash.exists?

  model = query_hash[:model].constantize

  updated_ids = (additions_set(key).members +
                 updates_set(key).members).uniq
  removed_ids = removals_set(key).members

  result = {
    model: model,
    updates: model.where(id: updated_ids),
    exclusions: removed_ids.map(&:to_i) }

  additions_set(key).clear
  updates_set(key).clear
  removals_set(key).clear

  result
end

.watch_relation(relation) ⇒ Object 



13
14
15
16
17
18
19
20
21
 
# File 'lib/query_dam.rb', line 13

def watch_relation(relation)
  key = SecureRandom.uuid
  query = relation.select("`#{relation.model.table_name}`.`id`").to_sql
  query_hash = Redis::HashKey.new(key)
  query_hash.bulk_set(model: relation.model.name, query: query)
  # query_hash.expire(QUERY_EXPIRE)
  Redis::Set.new(relation.model.name) << key
  key
end