has_attribute?

• Class methods (218)
• ===
• abstract_class?
• accessible_attributes (>= v2.1.0)
• active_connection_name (>= v2.1.0)
• add_conditions!
• add_group! (>= v2.0.3)
• add_joins!
• add_limit!
• add_lock! (>= v1.2.6)
• add_order! (>= v1.2.6)
• aggregate_mapping (>= v2.1.0)
• all (>= v2.1.0)
• all_attributes_exists?
• allow_concurrency (>= v2.2.1)
• allow_concurrency= (>= v2.1.0)
• arel_engine (>= v3.0.0)
• arel_table (>= v3.0.0)
• array_of_strings? (>= v2.2.1)
• 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 (>= v2.0.3)
• base_class
• before_remove_const (>= v3.0.9)
• benchmark
• build_default_scope (>= v3.1.0)
• class_name (>= v2.1.0)
• class_name_of_active_record... (>= v1.0.0)
• class_of_active_record_desc...
• clear_active_connection_name (>= v2.1.0)
• clear_active_connections!
• clear_all_cached_connections!
• clear_cache!
• clear_connection_cache! (<= v1.0.0)
• clear_reloadable_connections! (>= v1.2.6)
• colorize_logging (>= v3.0.0)
• colorize_logging= (>= v3.0.9)
• column_defaults (>= v3.1.0)
• column_methods_hash (>= v1.0.0)
• column_names
• columns
• columns_hash
• compute_table_name (>= v3.0.0)
• compute_type
• configurations (>= v3.0.9)
• connected?
• connection
• connection=
• connection_config (>= v3.1.0)
• connection_handler (>= v3.0.9)
• connection_id (>= v3.2.1)
• connection_id= (>= v3.2.1)
• connection_pool (>= v2.2.1)
• construct_attributes_from_a...
• construct_conditions_from_a...
• 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 (>= v2.1.0)
• 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? (>= v2.0.3)
• destroy
• destroy_all
• determine_deprecated_finder
• determine_finder
• determine_instantiator (>= v1.2.6)
• encode_quoted_value (>= v1.0.0)
• establish_connection
• evaluate_default_scope (>= v3.1.0)
• exists?
• expand_attribute_names_for_... (>= v2.1.0)
• expand_hash_conditions_for_... (>= v2.1.0)
• expand_id_conditions (>= v1.2.6)
• expand_range_bind_variables (>= v2.1.0)
• extract_attribute_names_fro...
• extract_options_from_args! (<= v1.0.0)
• find
• find_by_sql
• finder_needs_type_condition? (>= v2.1.0)
• find_every
• find_from_ids
• find_initial
• find_last (>= v2.1.0)
• find_one
• find_some
• find_sti_class (>= v3.0.0)
• first (>= v2.1.0)
• full_table_name_prefix (>= v2.3.8)
• generated_feature_methods (>= v3.2.1)
• get_primary_key (>= v2.1.0)
• human_attribute_name (>= v2.1.0)
• human_name (>= v2.2.1)
• 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 (>= v2.1.0)
• initialize_generated_modules (>= v3.2.1)
• inspect (>= v2.0.3)
• instantiate
• last (>= v2.1.0)
• 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 (>= v2.1.0)
• merge_includes
• merge_joins (>= v2.2.1)
• method_missing
• mysql2_connection (>= v3.1.0)
• mysql_connection (>= v2.1.0)
• new
• parse_config!
• parse_sqlite_config! (>= v2.0.3)
• pluralize_table_names (>= v3.0.9)
• postgresql_connection (>= v2.1.0)
• primary_key
• primary_key_prefix_type (>= v3.0.9)
• protected_attributes (>= v2.1.0)
• quote_bound_value (>= v1.0.0)
• quoted_table_name (>= v2.0.3)
• quote_value (>= v2.1.0)
• raise_if_bind_arity_mismatch (>= v1.0.0)
• read_methods (<= v1.0.0)
• readonly_attributes (>= v2.0.3)
• relation (>= v3.0.0)
• remove_connection
• remove_stale_cached_threads!
• replace_bind_variables (>= v1.0.0)
• replace_named_bind_variables (>= v1.0.0)
• require_mysql (>= v1.2.6)
• reset_column_information
• reset_column_information_an... (>= v2.1.0)
• reset_counters (>= v2.3.8)
• reset_primary_key (>= v1.0.0)
• reset_scoped_methods (>= v3.0.9)
• reset_sequence_name (>= v1.0.0)
• reset_subclasses (>= v1.0.0)
• reset_table_name (>= v1.0.0)
• respond_to? (>= v2.1.0)
• retrieve_connection (>= v2.1.0)
• reverse_sql_order (>= v2.1.0)
• safe_to_array
• sanitize (>= v2.1.0)
• sanitize_conditions (>= v3.0.9)
• sanitize_sql
• sanitize_sql_array (>= v1.2.6)
• sanitize_sql_for_assignment (>= v2.0.3)
• sanitize_sql_for_conditions (>= v2.0.3)
• sanitize_sql_hash (>= v1.2.6)
• sanitize_sql_hash_for_assig... (>= v2.0.3)
• sanitize_sql_hash_for_condi... (>= v2.0.3)
• schema_format (>= v3.0.9)
• scope (>= v1.0.0)
• scoped? (>= v1.0.0)
• scoped_methods (>= v1.0.0)
• scoped_methods= (<= v1.0.0)
• self_and_descendants_from_a... (>= v2.3.8)
• self_and_descendents_from_a... (>= v2.2.1)
• sequence_name (>= v1.0.0)
• sequence_name= (>= v3.0.9)
• serialize
• serialized_attributes
• set_inheritance_column
• set_locking_column
• set_primary_key
• set_readonly_option! (>= v2.1.0)
• set_sequence_name
• set_table_name
• silence
• single_threaded_active_conn... (>= v2.1.0)
• single_threaded_scoped_methods (>= v2.1.0)
• sqlite3_connection (>= v2.1.0)
• sqlite_connection (>= v2.1.0)
• sti_name (>= v2.1.0)
• subclasses (>= v1.0.0)
• 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 (>= v2.0.3)
• validate_find_options (>= v1.0.0)
• verification_timeout (>= v2.2.1)
• verification_timeout= (>= v2.2.1)
• 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 (>= v2.0.3)
• attribute_names
• attribute_present?
• attributes
• attributes=
• attributes_before_type_cast
• attributes_from_column_defi...
• attributes_protected_by_def...
• attributes_with_quotes
• becomes (>= v2.0.3)
• cache_key (>= v2.1.0)
• 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
• define_read_method
• define_read_method_for_seri... (>= v1.2.6)
• define_read_methods
• delete (>= v2.2.1)
• destroy
• destroyed? (>= v2.3.8)
• dup (>= v3.0.0)
• encode_with (>= v3.1.0)
• ensure_proper_type
• eql?
• evaluate_read_method
• 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 (>= v2.1.0)
• increment
• increment!
• initialize_copy (>= v3.0.0)
• initialize_dup (>= v3.1.0)
• init_with (>= v3.0.9)
• inspect (>= v2.0.3)
• instantiate_time_object (>= v2.0.3)
• interpolate_and_sanitize_sql (>= v3.0.9)
• interpolate_sanitized_sql (>= v3.0.9)
• interpolate_sql
• log_protected_attribute_rem... (>= v2.2.1)
• mass_assignment_options (>= v3.1.0)
• mass_assignment_role (>= v3.1.0)
• method_missing
• new_record?
• object_from_yaml
• populate_with_current_scope... (>= v3.0.9)
• query_attribute
• quote
• quote_columns
• quoted_column_names
• quoted_comma_pair_list
• quoted_id (>= v2.1.0)
• quote_value (>= v1.2.6)
• read_attribute
• read_attribute_before_type_...
• read_date_parameter_value (>= v3.1.0)
• readonly! (>= v1.0.0)
• 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 (>= v2.0.3)
• respond_to?
• save
• save!
• set_serialized_attributes (>= v3.1.0)
• to_ary (>= v3.1.0)
• toggle
• toggle!
• to_param
• to_xml
• to_yaml (>= v3.2.1)
• type_cast_attribute_value
• unserializable_attribute?
• unserialize_attribute
• update
• update_attribute
• update_attributes
• update_attributes! (>= v1.2.6)
• write_attribute
• yaml_initialize (>= v3.2.1)

= private
= protected