method

has_attribute?

v2.3.8 - Show latest stable - Class: ActiveRecord::Base

has_attribute?(attr_name)

public

Returns true if the given attribute is in the attributes hash

# File activerecord/lib/active_record/base.rb, line 2829
      def has_attribute?(attr_name)
        @attributes.has_key?(attr_name.to_s)
      end

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Instance methods
==
[]
[]=
attribute_for_inspect
attribute_names
attribute_present?
attributes
attributes=
attributes_before_type_cast
becomes
cache_key
clone
column_for_attribute
connection
decrement
decrement!
delete
destroy
destroyed?
eql?
freeze
frozen?
has_attribute?
hash
id
id=
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increment!
inspect
new_record?
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readonly?
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Class methods
===
abstract_class?
accessible_attributes
all
allow_concurrency
allow_concurrency=
attr_accessible
attr_protected
attr_readonly
base_class
benchmark
class_name
column_methods_hash
column_names
columns
columns_hash
connected?
connection
connection_pool
content_columns
count_by_sql
create
decrement_counter
delete
delete_all
descends_from_active_record?
destroy
destroy_all
establish_connection
exists?
find
find_by_sql
finder_needs_type_condition?
first
full_table_name_prefix
get_primary_key
human_attribute_name
human_name
increment_counter
inheritance_column
inherited
inspect
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merge_conditions
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new
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primary_key
protected_attributes
quote_value
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serialized_attributes
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Protected methods
aggregate_mapping
class_name_of_active_record_descendant
class_of_active_record_descendant
compute_type
current_scoped_methods
default_scope
encode_quoted_value
expand_hash_conditions_for_aggregates
expand_range_bind_variables
quote_bound_value
raise_if_bind_arity_mismatch
replace_bind_variables
replace_named_bind_variables
sanitize_sql_array
sanitize_sql_for_assignment
sanitize_sql_for_conditions
sanitize_sql_hash_for_assignment
sanitize_sql_hash_for_conditions
scope
scoped?
scoped_methods
set_readonly_option!
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validate_find_options
with_exclusive_scope
with_scope
Private methods
add_conditions!
add_group!
add_joins!
add_limit!
add_lock!
add_order!
all_attributes_exists?
array_of_strings?
attribute_condition
construct_attributes_from_arguments
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default_select
define_attr_method
expand_attribute_names_for_aggregates
expand_id_conditions
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merge_joins
method_missing
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quoted_table_name
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safe_to_array
type_condition
type_name_with_module
undecorated_table_name
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assign_multiparameter_attributes
attributes_from_column_definition
attributes_protected_by_default
attributes_with_quotes
clone_attribute_value
clone_attributes
comma_pair_list
convert_number_column_value
create
create_or_update
ensure_proper_type
execute_callstack_for_multiparameter_attributes
extract_callstack_for_multiparameter_attributes
find_parameter_position
instantiate_time_object
interpolate_sql
log_protected_attribute_removal
object_from_yaml
quote_columns
quote_value
quoted_column_names
quoted_comma_pair_list
remove_attributes_protected_from_mass_assignment
remove_readonly_attributes
type_cast_attribute_value
update