diff options
Diffstat (limited to 'activerecord/lib/active_record/explain.rb')
| -rw-r--r-- | activerecord/lib/active_record/explain.rb | 19 |
1 files changed, 13 insertions, 6 deletions
diff --git a/activerecord/lib/active_record/explain.rb b/activerecord/lib/active_record/explain.rb index 313fdb3487..7ade385c70 100644 --- a/activerecord/lib/active_record/explain.rb +++ b/activerecord/lib/active_record/explain.rb @@ -1,12 +1,13 @@ +require 'active_support/lazy_load_hooks' require 'active_support/core_ext/class/attribute' module ActiveRecord + ActiveSupport.on_load(:active_record_config) do + mattr_accessor :auto_explain_threshold_in_seconds, instance_accessor: false + end + module Explain - def self.extended(base) - # If a query takes longer than these many seconds we log its query plan - # automatically. nil disables this feature. - base.config_attribute :auto_explain_threshold_in_seconds, :global => true - end + delegate :auto_explain_threshold_in_seconds, :auto_explain_threshold_in_seconds=, to: 'ActiveRecord::Model' # If auto explain is enabled, this method triggers EXPLAIN logging for the # queries triggered by the block if it takes more than the threshold as a @@ -52,7 +53,7 @@ module ActiveRecord # Makes the adapter execute EXPLAIN for the tuples of queries and bindings. # Returns a formatted string ready to be logged. def exec_explain(queries) # :nodoc: - queries && queries.map do |sql, bind| + str = queries && queries.map do |sql, bind| [].tap do |msg| msg << "EXPLAIN for: #{sql}" unless bind.empty? @@ -62,6 +63,12 @@ module ActiveRecord msg << connection.explain(sql, bind) end.join("\n") end.join("\n") + + # Overriding inspect to be more human readable, specially in the console. + def str.inspect + self + end + str end # Silences automatic EXPLAIN logging for the duration of the block. |