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[R] | query_cache | |
[R] | query_cache_enabled |
Source: show
# File activerecord/lib/active_record/connection_adapters/abstract/query_cache.rb, line 9 def dirties_query_cache(base, *method_names) method_names.each do |method_name| base.class_eval " def #{method_name}(*) # def update_with_query_dirty(*args) clear_query_cache if @query_cache_enabled # clear_query_cache if @query_cache_enabled super # update_without_query_dirty(*args) end # end ", __FILE__, __LINE__ + 1 end end
Source: show
# File activerecord/lib/active_record/connection_adapters/abstract/query_cache.rb, line 5 def included(base) dirties_query_cache base, :insert, :update, :delete end
Enable the query cache within the block.
Source: show
# File activerecord/lib/active_record/connection_adapters/abstract/query_cache.rb, line 24 def cache old, @query_cache_enabled = @query_cache_enabled, true yield ensure clear_query_cache @query_cache_enabled = old end
Clears the query cache.
One reason you may wish to call this method explicitly is between queries that ask the database to randomize results. Otherwise the cache would see the same SQL query and repeatedly return the same result each time, silently undermining the randomness you were expecting.
Source: show
# File activerecord/lib/active_record/connection_adapters/abstract/query_cache.rb, line 54 def clear_query_cache @query_cache.clear end
Source: show
# File activerecord/lib/active_record/connection_adapters/abstract/query_cache.rb, line 36 def disable_query_cache! @query_cache_enabled = false end
Source: show
# File activerecord/lib/active_record/connection_adapters/abstract/query_cache.rb, line 32 def enable_query_cache! @query_cache_enabled = true end
Source: show
# File activerecord/lib/active_record/connection_adapters/abstract/query_cache.rb, line 58 def select_all(arel, name = nil, binds = []) if @query_cache_enabled sql = to_sql(arel) cache_sql(sql, binds) { super(sql, name, binds) } else super end end
Disable the query cache within the block.
Source: show
# File activerecord/lib/active_record/connection_adapters/abstract/query_cache.rb, line 41 def uncached old, @query_cache_enabled = @query_cache_enabled, false yield ensure @query_cache_enabled = old end