attribute_present?

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

= private
= protected