method
columns
rails latest stable - Class:
ActiveRecord::Base
Method deprecated or moved
This method is deprecated or moved on the latest stable version. The last existing version (v3.1.0) is shown here.
columns()public
Returns an array of column objects for the table associated with this class.
# File activerecord/lib/active_record/base.rb, line 705
def columns
connection_pool.columns[table_name]
end Related methods
- Instance methods
- <=>
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- inspect
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- readonly!
- readonly?
- to_param
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- arel_engine
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- attr_readonly
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- attribute_names
- base_class
- before_remove_const
- clear_active_connections!
- clear_cache!
- column_defaults
- column_methods_hash
- column_names
- columns
- columns_hash
- configurations
- connected?
- connection
- connection_config
- connection_handler
- connection_pool
- content_columns
- count_by_sql
- create
- default_timezone
- descends_from_active_record?
- establish_connection
- find_by_sql
- finder_needs_type_condition?
- full_table_name_prefix
- i18n_scope
- inheritance_column
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- inspect
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- retrieve_connection
- sanitize
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- sequence_name
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- serialize
- set_inheritance_column
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- set_table_name
- sqlite3_connection
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- table_exists?
- table_name
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- table_name_prefix
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aggregate_mapping -
build_default_scope -
class_of_active_record_descendant -
compute_type -
current_scope -
current_scope= -
default_scope -
encode_quoted_value -
evaluate_default_scope -
expand_hash_conditions_for_aggregates -
expand_range_bind_variables -
ignore_default_scope= -
ignore_default_scope? -
quote_bound_value -
raise_if_bind_arity_mismatch -
replace_bind_variables -
replace_named_bind_variables -
sanitize_conditions -
sanitize_sql -
sanitize_sql_array -
sanitize_sql_for_assignment -
sanitize_sql_for_conditions -
sanitize_sql_hash -
sanitize_sql_hash_for_assignment -
sanitize_sql_hash_for_conditions -
with_exclusive_scope -
with_scope -
clone_attribute_value -
clone_attributes -
mass_assignment_options -
mass_assignment_role - Private methods
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all_attributes_exists? -
attributes_protected_by_default -
compute_table_name -
construct_finder_arel -
expand_attribute_names_for_aggregates -
find_sti_class -
method_missing -
relation -
type_condition -
undecorated_table_name -
arel_attributes_values -
assign_multiparameter_attributes -
clear_timestamp_attributes -
comma_pair_list -
convert_number_column_value -
ensure_proper_type -
execute_callstack_for_multiparameter_attributes -
extract_callstack_for_multiparameter_attributes -
extract_max_param_for_multiparameter_attributes -
find_parameter_position -
instantiate_time_object -
populate_with_current_scope_attributes -
quote_columns -
quote_value -
quoted_comma_pair_list -
read_date_parameter_value -
read_other_parameter_value -
read_time_parameter_value -
read_value_from_parameter -
set_serialized_attributes -
to_ary -
type_cast_attribute_value