example of active_record methods introspection

gistfile1.rb

Loading development environment (Rails 2.3.5)
>> module ActiveRecord
>>   Base.singleton_methods.each do |m|
?>     Base.class_eval <<-EOS
      class << self
        puts "redefining #{m}"

        define_method "#{m}_with_introspection" do |*args|
          puts "#{m}"
          send(:"#{m}_without_introspection", *args)
        end

        alias_method :"#{m}_without_introspection", :"#{m}"
        alias_method :"#{m}", :"#{m}_with_introspection"
      end
    EOS
>>   end
>> end
redefining add_indexes
redefining spawn_reconnect
redefining inspect
redefining class_of_active_record_descendant
redefining delete_observer
redefining record_timestamps=
redefining scope
redefining reset_table_name
redefining default_scope
redefining schema_format
redefining qcol
redefining self_and_descendants_from_active_record
redefining after_validation
redefining table_exists?
redefining aggregate_mapping
redefining schema_format=
redefining preload_associations
redefining columns
redefining benchmark
redefining commit
redefining delete_all
redefining after_validation_on_create_callback_chain
redefining abstract_class
redefining delete_observers
redefining check_partition
redefining store_full_sti_class
redefining after_save_callback_chain
redefining create_temp_table
redefining human_attribute_name
redefining abstract_class=
redefining before_validation_on_create
redefining validate
redefining store_full_sti_class=
redefining cache_attribute?
redefining sum
redefining replace_named_bind_variables
redefining abstract_class?
redefining reload_table
redefining match_attribute_method?
redefining count_observers
redefining partition
redefining class_name_of_active_record_descendant
redefining default_scoping
redefining drop_temp_table
redefining validates_format_of
redefining after_validation_on_create
redefining default_scoping=
redefining backup_and_delete
redefining update_all
redefining before_validation_on_update_callback_chain
redefining nested_attributes_options
redefining sanitize_sql_array
redefining validate_find_options
redefining before_create_callback_chain
redefining reflect_on_association
redefining validates_inclusion_of
redefining before_validation_on_update
redefining quote_value
redefining nested_attributes_options=
redefining reflect_on_all_associations
redefining repartition
redefining quoted_locking_column
redefining primary_key_prefix_type
redefining current_user
redefining calculate
redefining store_full_sti_class?
redefining before_save
redefining reflect_on_all_aggregations
redefining raise_if_bind_arity_mismatch
redefining belongs_to
redefining uncached
redefining truncate_table
redefining generated_methods?
redefining sti_name
redefining observers
redefining is_external?
redefining primary_key_prefix_type=
redefining validate_callback_chain
redefining validates_each
redefining set_table_name
redefining accepts_nested_attributes_for
redefining sanitize_sql_hash_for_conditions
redefining truncate_partition
redefining first
redefining define_attribute_methods
redefining after_validation_on_update
redefining observers=
redefining has_delete?
redefining connection_handler
redefining construct_count_options_from_args
redefining validates_size_of
redefining columns_hash
redefining after_save
redefining composed_of
redefining class_name
redefining after_validation_on_update_callback_chain
redefining group_concat_sql
redefining sanitize_sql_for_assignment
redefining connection_handler=
redefining merge_conditions
redefining is_heap?
redefining set_readonly_option!
redefining reset_primary_key
redefining drop_partition
redefining after_create_callback_chain
redefining import_from_temp_table
redefining reflections
redefining validates_exclusion_of
redefining human_name
redefining increment_counter
redefining reset_locking_column
redefining average
redefining create_reflection
redefining table_name_prefix
redefining validates_uniqueness_of
redefining allow_concurrency
redefining table_name
redefining count_distinct
redefining instance_method_already_implemented?
redefining table_name_prefix=
redefining validate_on_create_callback_chain
redefining validates_confirmation_of
redefining sanitize_sql_hash_for_assignment
redefining drop_old_partitions
redefining allow_concurrency=
redefining get_primary_key
redefining delete
redefining table_name=
redefining clear_temp_table
redefining alias_attribute
redefining new_partition
redefining depending_on_previous_bucket?
redefining create
redefining subclasses
redefining decrement_counter
redefining update_counters_with_lock
redefining compute_type
redefining valid_keys_for_has_one_association
redefining classify_table
redefining clear_active_connections!
redefining column_names
redefining connection
redefining before_destroy_callback_chain
redefining concat_sql
redefining valid_keys_for_has_one_association=
redefining vacuum_tables
redefining before_update_callback_chain
redefining validates_associated
redefining ===
redefining before_destroy
redefining partition_start
redefining count
redefining attr_protected
redefining table_name_suffix
redefining update_counters_without_lock
redefining current_user_proc
redefining verification_timeout
redefining after_find
redefining merge_hash_for_sync
redefining clear_all_connections!
redefining before_create
redefining scoped?
redefining timediff_sql
redefining table_name_suffix=
redefining validate_on_update_callback_chain
redefining current_user_proc=
redefining retrieve_connection
redefining verification_timeout=
redefining has_rows?
redefining has_many
redefining inheritance_column
redefining descends_from_active_record?
redefining find_by_sql
redefining start_transaction
redefining validates_numericality_of
redefining after_destroy
redefining find
redefining protected_attributes
redefining inheritance_column=
redefining partial_updates
redefining connection_pool
redefining content_columns
redefining after_create
redefining encode_quoted_value
redefining partial_updates=
redefining postgresql_connection
redefining after_destroy_callback_chain
redefining lock_optimistically
redefining validates_acceptance_of
redefining respond_to?
redefining finder_needs_type_condition?
redefining expand_hash_conditions_for_aggregates
redefining sanitize_sql_for_conditions
redefining after_update_callback_chain
redefining rollback
redefining lock_optimistically=
redefining silence
redefining attr_accessible
redefining with_scope
redefining valid_keys_for_belongs_to_association
redefining pluralize_table_names
redefining partitions
redefining locking_column
redefining valid_keys_for_belongs_to_association=
redefining pluralize_table_names=
redefining remove_connection
redefining configurations
redefining connected?
redefining sequence_name
redefining exists?
redefining sanitize_sql
redefining changed?
redefining gphost
redefining update
redefining locking_column=
redefining authorized_for?
redefining configurations=
redefining reflect_on_all_autosave_associations
redefining minimum
redefining accessible_attributes
redefining sequence_name=
redefining set_primary_key
redefining partition_end
redefining execute_grouped_calculation
redefining column_methods_hash
redefining transaction
redefining inherited
redefining has_and_belongs_to_many
redefining destroy_all
redefining base_class
redefining partition_names
redefining set_locking_column
redefining verify_active_connections!
redefining reset_sequence_name
redefining destroy
redefining before_validation_callback_chain
redefining attr_readonly
redefining changed
redefining maximum
redefining colorize_logging
redefining after_find_callback_chain
redefining execute_simple_calculation
redefining before_update
redefining count_by_sql
redefining all_partitions
redefining colorize_logging=
redefining establish_connection
redefining validates_presence_of
redefining get_all_tables
redefining reset_subclasses
redefining named_scope
redefining load_from_file
redefining notify_observers
redefining readonly_attributes
redefining current_scoped_methods
redefining attribute_method_suffix
redefining construct_calculation_sql
redefining valid_keys_for_has_and_belongs_to_many_association
redefining locking_enabled?
redefining reset_column_information
redefining after_update
redefining find_hidden_method
redefining partial_updates?
redefining add_columns
redefining sanitize_conditions
redefining valid_keys_for_has_many_association
redefining valid_keys_for_has_and_belongs_to_many_association=
redefining validates_length_of
redefining set_sequence_name
redefining after_initialize
redefining replace_bind_variables
redefining get_sync_list
redefining define_read_methods
redefining scoped
redefining after_validation_callback_chain
redefining partition_exists?
redefining quoted_table_name
redefining sanitize
redefining add_observer
redefining instantiate_observers
redefining valid_keys_for_has_many_association=
redefining scoped_methods
redefining check_partitions
redefining serialize
redefining after_initialize_callback_chain
redefining attribute_types_cached_by_default
redefining generated_methods
redefining clear_reloadable_connections!
redefining quote
redefining attribute_types_cached_by_default=
redefining create!
redefining expand_range_bind_variables
redefining has_one
redefining cache_attributes
redefining time_zone_aware_attributes
redefining scopes
redefining validate_on_create
redefining with_exclusive_scope
redefining last
redefining serialized_attributes
redefining all
redefining time_zone_aware_attributes=
redefining skip_time_zone_conversion_for_attributes
redefining method_added
redefining primary_key
redefining update_counters
redefining find_each
redefining skip_time_zone_conversion_for_attributes=
redefining define_callbacks
redefining sanitize_sql_hash
redefining set_inheritance_column
redefining alias_attribute_with_dirty
redefining before_validation_on_create_callback_chain
redefining default_timezone
redefining primary_key=
redefining cached_attributes
redefining logger
redefining use_temp_table?
redefining validate_on_update
redefining include_root_in_json
redefining before_save_callback_chain
redefining temp_table_name
redefining default_timezone=
redefining timestamped_migrations
redefining logger=
redefining cache
redefining reset_column_information_and_inheritable_attributes_for_all_subclasses
redefining before_validation
redefining include_root_in_json=
redefining reflect_on_aggregation
redefining timestamped_migrations=
redefining record_timestamps
redefining find_in_batches
redefining yaml_tag_subclasses?
redefining quote_bound_value
redefining alias_attribute_without_dirty
=> ["add_indexes", "spawn_reconnect", "inspect", "class_of_active_record_descendant", "delete_observer", "record_timestamps=", "scope", "reset_table_name", "default_scope", "schema_format", "qcol", "self_and_descendants_from_active_record", "after_validation", "table_exists?", "aggregate_mapping", "schema_format=", "preload_associations", "columns", "benchmark", "commit", "delete_all", "after_validation_on_create_callback_chain", "abstract_class", "delete_observers", "check_partition", "store_full_sti_class", "after_save_callback_chain", "create_temp_table", "human_attribute_name", "abstract_class=", "before_validation_on_create", "validate", "store_full_sti_class=", "cache_attribute?", "sum", "replace_named_bind_variables", "abstract_class?", "reload_table", "match_attribute_method?", "count_observers", "partition", "class_name_of_active_record_descendant", "default_scoping", "drop_temp_table", "validates_format_of", "after_validation_on_create", "default_scoping=", "backup_and_delete", "update_all", "before_validation_on_update_callback_chain", "nested_attributes_options", "sanitize_sql_array", "validate_find_options", "before_create_callback_chain", "reflect_on_association", "validates_inclusion_of", "before_validation_on_update", "quote_value", "nested_attributes_options=", "reflect_on_all_associations", "repartition", "quoted_locking_column", "primary_key_prefix_type", "current_user", "calculate", "store_full_sti_class?", "before_save", "reflect_on_all_aggregations", "raise_if_bind_arity_mismatch", "belongs_to", "uncached", "truncate_table", "generated_methods?", "sti_name", "observers", "is_external?", "primary_key_prefix_type=", "validate_callback_chain", "validates_each", "set_table_name", "accepts_nested_attributes_for", "sanitize_sql_hash_for_conditions", "truncate_partition", "first", "define_attribute_methods", "after_validation_on_update", "observers=", "has_delete?", "connection_handler", "construct_count_options_from_args", "validates_size_of", "columns_hash", "after_save", "composed_of", "class_name", "after_validation_on_update_callback_chain", "group_concat_sql", "sanitize_sql_for_assignment", "connection_handler=", "merge_conditions", "is_heap?", "set_readonly_option!", "reset_primary_key", "drop_partition", "after_create_callback_chain", "import_from_temp_table", "reflections", "validates_exclusion_of", "human_name", "increment_counter", "reset_locking_column", "average", "create_reflection", "table_name_prefix", "validates_uniqueness_of", "allow_concurrency", "table_name", "count_distinct", "instance_method_already_implemented?", "table_name_prefix=", "validate_on_create_callback_chain", "validates_confirmation_of", "sanitize_sql_hash_for_assignment", "drop_old_partitions", "allow_concurrency=", "get_primary_key", "delete", "table_name=", "clear_temp_table", "alias_attribute", "new_partition", "depending_on_previous_bucket?", "create", "subclasses", "decrement_counter", "update_counters_with_lock", "compute_type", "valid_keys_for_has_one_association", "classify_table", "clear_active_connections!", "column_names", "connection", "before_destroy_callback_chain", "concat_sql", "valid_keys_for_has_one_association=", "vacuum_tables", "before_update_callback_chain", "validates_associated", "===", "before_destroy", "partition_start", "count", "attr_protected", "table_name_suffix", "update_counters_without_lock", "current_user_proc", "verification_timeout", "after_find", "merge_hash_for_sync", "clear_all_connections!", "before_create", "scoped?", "timediff_sql", "table_name_suffix=", "validate_on_update_callback_chain", "current_user_proc=", "retrieve_connection", "verification_timeout=", "has_rows?", "has_many", "inheritance_column", "descends_from_active_record?", "find_by_sql", "start_transaction", "validates_numericality_of", "after_destroy", "find", "protected_attributes", "inheritance_column=", "partial_updates", "connection_pool", "content_columns", "after_create", "encode_quoted_value", "partial_updates=", "postgresql_connection", "after_destroy_callback_chain", "lock_optimistically", "validates_acceptance_of", "respond_to?", "finder_needs_type_condition?", "expand_hash_conditions_for_aggregates", "sanitize_sql_for_conditions", "after_update_callback_chain", "rollback", "lock_optimistically=", "silence", "attr_accessible", "with_scope", "valid_keys_for_belongs_to_association", "pluralize_table_names", "partitions", "locking_column", "valid_keys_for_belongs_to_association=", "pluralize_table_names=", "remove_connection", "configurations", "connected?", "sequence_name", "exists?", "sanitize_sql", "changed?", "gphost", "update", "locking_column=", "authorized_for?", "configurations=", "reflect_on_all_autosave_associations", "minimum", "accessible_attributes", "sequence_name=", "set_primary_key", "partition_end", "execute_grouped_calculation", "column_methods_hash", "transaction", "inherited", "has_and_belongs_to_many", "destroy_all", "base_class", "partition_names", "set_locking_column", "verify_active_connections!", "reset_sequence_name", "destroy", "before_validation_callback_chain", "attr_readonly", "changed", "maximum", "colorize_logging", "after_find_callback_chain", "execute_simple_calculation", "before_update", "count_by_sql", "all_partitions", "colorize_logging=", "establish_connection", "validates_presence_of", "get_all_tables", "reset_subclasses", "named_scope", "load_from_file", "notify_observers", "readonly_attributes", "current_scoped_methods", "attribute_method_suffix", "construct_calculation_sql", "valid_keys_for_has_and_belongs_to_many_association", "locking_enabled?", "reset_column_information", "after_update", "find_hidden_method", "partial_updates?", "add_columns", "sanitize_conditions", "valid_keys_for_has_many_association", "valid_keys_for_has_and_belongs_to_many_association=", "validates_length_of", "set_sequence_name", "after_initialize", "replace_bind_variables", "get_sync_list", "define_read_methods", "scoped", "after_validation_callback_chain", "partition_exists?", "quoted_table_name", "sanitize", "add_observer", "instantiate_observers", "valid_keys_for_has_many_association=", "scoped_methods", "check_partitions", "serialize", "after_initialize_callback_chain", "attribute_types_cached_by_default", "generated_methods", "clear_reloadable_connections!", "quote", "attribute_types_cached_by_default=", "create!", "expand_range_bind_variables", "has_one", "cache_attributes", "time_zone_aware_attributes", "scopes", "validate_on_create", "with_exclusive_scope", "last", "serialized_attributes", "all", "time_zone_aware_attributes=", "skip_time_zone_conversion_for_attributes", "method_added", "primary_key", "update_counters", "find_each", "skip_time_zone_conversion_for_attributes=", "define_callbacks", "sanitize_sql_hash", "set_inheritance_column", "alias_attribute_with_dirty", "before_validation_on_create_callback_chain", "default_timezone", "primary_key=", "cached_attributes", "logger", "use_temp_table?", "validate_on_update", "include_root_in_json", "before_save_callback_chain", "temp_table_name", "default_timezone=", "timestamped_migrations", "logger=", "cache", "reset_column_information_and_inheritable_attributes_for_all_subclasses", "before_validation", "include_root_in_json=", "reflect_on_aggregation", "timestamped_migrations=", "record_timestamps", "find_in_batches", "yaml_tag_subclasses?", "quote_bound_value", "alias_attribute_without_dirty"]
>> AggDemoDaily.first
inherited
respond_to?
changed
notify_observers
named_scope
scopes
first
find
validate_find_options
set_readonly_option!
scope
current_scoped_methods
scoped_methods
default_scoping
scope
current_scoped_methods
scoped_methods
scope
current_scoped_methods
scoped_methods
quoted_table_name
connection
retrieve_connection
connection_handler
table_name
reset_table_name
base_class
class_of_active_record_descendant
table_name_prefix
pluralize_table_names
table_name_suffix
set_table_name
finder_needs_type_condition?
descends_from_active_record?
abstract_class?
merge_conditions
connection
retrieve_connection
connection_handler
connection
retrieve_connection
connection_handler
find_by_sql
connection
retrieve_connection
connection_handler
sanitize_sql
quoted_table_name
connection
retrieve_connection
connection_handler
colorize_logging
inheritance_column
column_names
columns
connection
retrieve_connection
connection_handler
primary_key
reset_primary_key
base_class
class_of_active_record_descendant
get_primary_key
primary_key_prefix_type
set_primary_key
columns_hash
columns
default_timezone
columns_hash
columns_hash
columns_hash
columns_hash
columns_hash
columns_hash
columns_hash
columns_hash
columns_hash
columns_hash
columns_hash
columns_hash
serialized_attributes
columns_hash
columns_hash
columns_hash
columns_hash
columns_hash
columns_hash
columns_hash
columns_hash
=> #<AggDemoDaily bucket: "2011-08-01 00:00:00", text: "test">