method

method_missing

v3.1.0 - Show latest stable - 0 notes - Class: ActiveRecord::Base

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Class methods (218)
===
abstract_class?
accessible_attributes (<= v2.3.8)
active_connection_name (<= v2.1.0)
add_conditions! (<= v2.3.8)
add_group! (<= v2.3.8)
add_joins! (<= v2.3.8)
add_limit! (<= v2.3.8)
add_lock! (<= v2.3.8)
add_order! (<= v2.3.8)
aggregate_mapping
all (<= v2.3.8)
all_attributes_exists?
allow_concurrency (<= v2.3.8)
allow_concurrency= (<= v2.3.8)
arel_engine
arel_table
array_of_strings? (<= v2.3.8)
attr_accessible (<= v2.3.8)
attribute_condition (<= v2.3.8)
attribute_method?
attribute_names
attributes_protected_by_def...
attr_protected (<= v2.3.8)
attr_readonly
base_class
before_remove_const
benchmark (<= v2.3.8)
build_default_scope
class_name (<= v2.3.8)
class_name_of_active_record... (<= v2.3.8)
class_of_active_record_desc...
clear_active_connection_name (<= v2.1.0)
clear_active_connections!
clear_all_cached_connections! (<= v2.1.0)
clear_cache!
clear_connection_cache! (<= v1.0.0)
clear_reloadable_connections! (<= v2.1.0)
colorize_logging (<= v3.0.9)
colorize_logging= (<= v3.0.9)
column_defaults
column_methods_hash
column_names
columns
columns_hash
compute_table_name
compute_type
configurations
connected?
connection
connection= (<= v2.1.0)
connection_config
connection_handler
connection_id (>= v3.2.1)
connection_id= (>= v3.2.1)
connection_pool
construct_attributes_from_a... (<= v3.0.9)
construct_conditions_from_a... (<= v1.1.6)
construct_finder_arel
construct_finder_sql (<= v2.3.8)
content_columns
count (<= v1.0.0)
count_by_sql
create
current_scope
current_scope=
current_scoped_methods (<= v3.0.9)
decrement_counter (<= v2.3.8)
default_scope
default_select (<= v2.3.8)
default_timezone
define_attr_method (<= v2.3.8)
delete (<= v2.3.8)
delete_all (<= v2.3.8)
descends_from_active_record?
destroy (<= v2.3.8)
destroy_all (<= v2.3.8)
determine_deprecated_finder (<= v1.2.6)
determine_finder (<= v2.1.0)
determine_instantiator (<= v2.1.0)
encode_quoted_value
establish_connection
evaluate_default_scope
exists? (<= v2.3.8)
expand_attribute_names_for_...
expand_hash_conditions_for_...
expand_id_conditions (<= v2.3.8)
expand_range_bind_variables
extract_attribute_names_fro... (<= v2.1.0)
extract_options_from_args! (<= v1.0.0)
find (<= v2.3.8)
find_by_sql
finder_needs_type_condition?
find_every (<= v2.3.8)
find_from_ids (<= v2.3.8)
find_initial (<= v2.3.8)
find_last (<= v2.3.8)
find_one (<= v2.3.8)
find_some (<= v2.3.8)
find_sti_class
first (<= v2.3.8)
full_table_name_prefix
generated_feature_methods (>= v3.2.1)
get_primary_key (<= v2.3.8)
human_attribute_name (<= v2.3.8)
human_name (<= v2.3.8)
i18n_scope
ignore_default_scope=
ignore_default_scope?
increment_counter (<= v2.3.8)
inheritance_column
inheritance_column=
inherited (>= v2.1.0)
initialize_generated_modules (>= v3.2.1)
inspect
instantiate
last (<= v2.3.8)
log_connections (<= v2.1.0)
logger
lookup_ancestors
matches_dynamic_finder? (<= v2.1.0)
matches_dynamic_finder_with... (<= v2.1.0)
merge_conditions (<= v2.3.8)
merge_includes (<= v2.3.8)
merge_joins (<= v2.3.8)
method_missing
mysql2_connection
mysql_connection
new
parse_config! (<= v1.2.6)
parse_sqlite_config! (<= v2.3.8)
pluralize_table_names
postgresql_connection
primary_key (<= v2.3.8)
primary_key_prefix_type
protected_attributes (<= v2.3.8)
quote_bound_value
quoted_table_name
quote_value
raise_if_bind_arity_mismatch
read_methods (<= v1.0.0)
readonly_attributes
relation
remove_connection
remove_stale_cached_threads! (<= v2.1.0)
replace_bind_variables
replace_named_bind_variables
require_mysql (<= v2.1.0)
reset_column_information
reset_column_information_an... (<= v3.0.9)
reset_counters (<= v2.3.8)
reset_primary_key (<= v2.3.8)
reset_scoped_methods (<= v3.0.9)
reset_sequence_name
reset_subclasses (<= v3.0.9)
reset_table_name
respond_to?
retrieve_connection
reverse_sql_order (<= v2.3.8)
safe_to_array (<= v2.3.8)
sanitize
sanitize_conditions
sanitize_sql
sanitize_sql_array
sanitize_sql_for_assignment
sanitize_sql_for_conditions
sanitize_sql_hash
sanitize_sql_hash_for_assig...
sanitize_sql_hash_for_condi...
schema_format
scope (<= v2.3.8)
scoped? (<= v2.3.8)
scoped_methods (<= v3.0.9)
scoped_methods= (<= v1.0.0)
self_and_descendants_from_a... (<= v2.3.8)
self_and_descendents_from_a... (<= v2.2.1)
sequence_name
sequence_name=
serialize
serialized_attributes (<= v3.0.9)
set_inheritance_column
set_locking_column (<= v1.1.6)
set_primary_key (<= v2.3.8)
set_readonly_option! (<= v2.3.8)
set_sequence_name
set_table_name
silence (<= v2.3.8)
single_threaded_active_conn... (<= v2.1.0)
single_threaded_scoped_methods (<= v2.1.0)
sqlite3_connection
sqlite_connection (<= v2.3.8)
sti_name
subclasses (<= v3.0.9)
symbolized_base_class
symbolized_sti_name
table_exists?
table_name
table_name=
table_name_prefix
table_name_suffix
threaded_connections (<= v1.0.0)
threaded_connections= (<= v1.0.0)
thread_safe_active_connections (<= v2.1.0)
thread_safe_scoped_methods (<= v2.1.0)
timestamped_migrations
type_condition
type_name_with_module (<= v2.3.8)
undecorated_table_name
unscoped
update (<= v2.3.8)
update_all (<= v2.3.8)
update_counters (<= v2.3.8)
validate_find_options (<= v2.3.8)
verification_timeout (<= v2.3.8)
verification_timeout= (<= v2.3.8)
verify_active_connections! (<= v2.1.0)
with_exclusive_scope
with_scope
Instance methods (107)
<=>
==
[] (<= v3.0.9)
[]= (<= v3.0.9)
arel_attributes_values
assign_attributes
assign_multiparameter_attri...
attribute_for_inspect
attribute_names
attribute_present?
attributes
attributes=
attributes_before_type_cast (<= v2.3.8)
attributes_from_column_defi... (<= v2.3.8)
attributes_protected_by_def... (<= v2.3.8)
attributes_with_quotes (<= v2.3.8)
becomes (<= v2.3.8)
cache_key
clear_timestamp_attributes
clone (<= v2.3.8)
clone_attributes
clone_attribute_value
column_for_attribute
comma_pair_list
connection
convert_number_column_value
create (<= v2.3.8)
create_or_update (<= v2.3.8)
decrement (<= v2.3.8)
decrement! (<= v2.3.8)
define_question_method (<= v1.2.6)
define_read_method (<= v1.2.6)
define_read_method_for_seri... (<= v1.2.6)
define_read_methods (<= v1.2.6)
delete (<= v2.3.8)
destroy (<= v2.3.8)
destroyed? (<= v2.3.8)
dup
encode_with
ensure_proper_type
eql?
evaluate_read_method (<= v1.2.6)
execute_callstack_for_multi...
extract_callstack_for_multi...
extract_max_param_for_multi...
find_parameter_position
freeze
frozen?
has_attribute?
hash
id (<= v2.3.8)
id= (<= v2.3.8)
id_before_type_cast (<= v2.3.8)
increment (<= v2.3.8)
increment! (<= v2.3.8)
initialize_copy (<= v3.0.9)
initialize_dup
init_with
inspect
instantiate_time_object
interpolate_and_sanitize_sql (<= v3.0.9)
interpolate_sanitized_sql (<= v3.0.9)
interpolate_sql (<= v3.0.0)
log_protected_attribute_rem... (<= v2.3.8)
mass_assignment_options
mass_assignment_role
method_missing (<= v1.2.6)
new_record? (<= v2.3.8)
object_from_yaml (<= v3.0.9)
populate_with_current_scope...
query_attribute (<= v1.2.6)
quote (<= v1.2.6)
quote_columns
quoted_column_names (<= v2.3.8)
quoted_comma_pair_list
quoted_id
quote_value
read_attribute (<= v1.2.6)
read_attribute_before_type_... (<= v1.2.6)
read_date_parameter_value
readonly!
readonly?
read_other_parameter_value
read_time_parameter_value
read_value_from_parameter
reload (<= v2.3.8)
remove_attributes_protected... (<= v2.3.8)
remove_readonly_attributes (<= v2.3.8)
respond_to? (<= v1.2.6)
save (<= v2.3.8)
save! (<= v2.3.8)
set_serialized_attributes
to_ary
toggle (<= v2.3.8)
toggle! (<= v2.3.8)
to_param
to_xml (<= v1.1.6)
to_yaml (>= v3.2.1)
type_cast_attribute_value
unserializable_attribute? (<= v1.2.6)
unserialize_attribute (<= v1.2.6)
update (<= v2.3.8)
update_attribute (<= v2.3.8)
update_attributes (<= v2.3.8)
update_attributes! (<= v2.3.8)
write_attribute (<= v1.2.6)
yaml_initialize (>= v3.2.1)

Icon_private_sm = private
Icon_protected_sm = protected

method_missing(method_id, *arguments, &block) private

Enables dynamic finders like User.find_by_user_name(user_name) and <tt>User.scoped_by_user_name(user_name). Refer to Dynamic attribute-based finders section at the top of this file for more detailed information.

It’s even possible to use all the additional parameters to find. For example, the full interface for find_all_by_amount is actually find_all_by_amount(amount, options).

Each dynamic finder using scoped_by_* is also defined in the class after it is first invoked, so that future attempts to use it do not run through method_missing.

Show source

# File activerecord/lib/active_record/base.rb, line 1045
        def method_missing(method_id, *arguments, &block)
          if match = DynamicFinderMatch.match(method_id)
            attribute_names = match.attribute_names
            super unless all_attributes_exists?(attribute_names)
            if !arguments.first.is_a?(Hash) && arguments.size < attribute_names.size
              ActiveSupport::Deprecation.warn(Calling dynamic finder with less number of arguments than the number of attributes in method name is deprecated and will raise an ArguementError in the next version of Rails. Please passing `nil' to the argument you want it to be nil.)
            end
            if match.finder?
              options = arguments.extract_options!
              relation = options.any? ? scoped(options) : scoped
              relation.send :find_by_attributes, match, attribute_names, *arguments
            elsif match.instantiator?
              scoped.send :find_or_instantiator_by_attributes, match, attribute_names, *arguments, &block
            end
          elsif match = DynamicScopeMatch.match(method_id)
            attribute_names = match.attribute_names
            super unless all_attributes_exists?(attribute_names)
            if arguments.size < attribute_names.size
              ActiveSupport::Deprecation.warn(
                "Calling dynamic scope with less number of arguments than the number of attributes in "                  "method name is deprecated and will raise an ArguementError in the next version of Rails. "                  "Please passing `nil' to the argument you want it to be nil."
              )
            end
            if match.scope?
              self.class_eval                 def self.#{method_id}(*args)                                    # def self.scoped_by_user_name_and_password(*args)                  attributes = Hash[[:#{attribute_names.join(',:')}].zip(args)] #   attributes = Hash[[:user_name, :password].zip(args)]                                                                                #                  scoped(:conditions => attributes)                             #   scoped(:conditions => attributes)                end                                                             # end, __FILE__, __LINE__ + 1
              send(method_id, *arguments)
            end
          else
            super
          end
        end