Class: Attributor::Hash
- Inherits:
-
Object
- Object
- Attributor::Hash
- Defined in:
- lib/attributor/types/hash.rb
Direct Known Subclasses
Constant Summary collapse
- MAX_EXAMPLE_DEPTH =
5
- CIRCULAR_REFERENCE_MARKER =
'...'.freeze
Class Attribute Summary collapse
-
.extra_keys ⇒ Object
Returns the value of attribute extra_keys.
-
.insensitive_map ⇒ Object
readonly
Returns the value of attribute insensitive_map.
-
.key_attribute ⇒ Object
readonly
Returns the value of attribute key_attribute.
-
.key_type ⇒ Object
Returns the value of attribute key_type.
-
.options ⇒ Object
readonly
Returns the value of attribute options.
-
.requirements ⇒ Object
readonly
Returns the value of attribute requirements.
-
.value_attribute ⇒ Object
readonly
Returns the value of attribute value_attribute.
-
.value_type ⇒ Object
Returns the value of attribute value_type.
Instance Attribute Summary collapse
-
#contents ⇒ Object
readonly
TODO: Think about the format of the subcontexts to use: let’s use .at(key.to_s).
-
#dumping ⇒ Object
readonly
Returns the value of attribute dumping.
-
#validating ⇒ Object
readonly
Returns the value of attribute validating.
Class Method Summary collapse
- .add_requirement(req) ⇒ Object
- .attributes(**options, &key_spec) ⇒ Object
- .check_option!(name, definition) ⇒ Object
- .construct(constructor_block, **options) ⇒ Object
- .constructable? ⇒ Boolean
- .definition ⇒ Object
- .describe(shallow = false, example: nil) ⇒ Object
- .dsl_class ⇒ Object
- .dump(value, **opts) ⇒ Object
- .example(context = nil, **values) ⇒ Object
- .example_contents(context, parent, **values) ⇒ Object
- .family ⇒ Object
- .from_hash(object, context, recurse: false) ⇒ Object
- .generate_subcontext(context, key_name) ⇒ Object
- .inherited(klass) ⇒ Object
- .keys(**options, &key_spec) ⇒ Object
- .load(value, context = Attributor::DEFAULT_ROOT_CONTEXT, recurse: false, **options) ⇒ Object
- .native_type ⇒ Object
- .of(key: @key_type, value: @value_type) ⇒ Object
- .valid_type?(type) ⇒ Boolean
- .validate(object, context = Attributor::DEFAULT_ROOT_CONTEXT, _attribute) ⇒ Object
Instance Method Summary collapse
- #==(other) ⇒ Object
- #[](k) ⇒ Object
- #[]=(k, v) ⇒ Object
- #_get_attr(k) ⇒ Object
- #delete(key) ⇒ Object
- #dump(**opts) ⇒ Object
- #each(&block) ⇒ Object (also: #each_pair)
- #empty? ⇒ Boolean
- #generate_subcontext(context, key_name) ⇒ Object
- #get(key, context: self.generate_subcontext(Attributor::DEFAULT_ROOT_CONTEXT,key)) ⇒ Object
-
#initialize(contents = {}) ⇒ Hash
constructor
A new instance of Hash.
- #key?(k) ⇒ Boolean (also: #has_key?)
- #key_attribute ⇒ Object
- #key_type ⇒ Object
- #keys ⇒ Object
- #merge(h) ⇒ Object
- #set(key, value, context: self.generate_subcontext(Attributor::DEFAULT_ROOT_CONTEXT,key), recurse: false) ⇒ Object
- #size ⇒ Object
- #validate(context = Attributor::DEFAULT_ROOT_CONTEXT) ⇒ Object
- #value_attribute ⇒ Object
- #value_type ⇒ Object
- #values ⇒ Object
Methods included from Container
Constructor Details
#initialize(contents = {}) ⇒ Hash
Returns a new instance of Hash.
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# File 'lib/attributor/types/hash.rb', line 530 def initialize(contents={}) @validating = false @dumping = false @contents = contents end |
Class Attribute Details
.extra_keys ⇒ Object
Returns the value of attribute extra_keys.
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# File 'lib/attributor/types/hash.rb', line 32 def extra_keys @extra_keys end |
.insensitive_map ⇒ Object (readonly)
Returns the value of attribute insensitive_map.
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# File 'lib/attributor/types/hash.rb', line 31 def insensitive_map @insensitive_map end |
.key_attribute ⇒ Object (readonly)
Returns the value of attribute key_attribute.
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# File 'lib/attributor/types/hash.rb', line 30 def key_attribute @key_attribute end |
.key_type ⇒ Object
Returns the value of attribute key_type.
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# File 'lib/attributor/types/hash.rb', line 28 def key_type @key_type end |
.options ⇒ Object (readonly)
Returns the value of attribute options.
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# File 'lib/attributor/types/hash.rb', line 28 def @options end |
.requirements ⇒ Object (readonly)
Returns the value of attribute requirements.
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# File 'lib/attributor/types/hash.rb', line 33 def requirements @requirements end |
.value_attribute ⇒ Object (readonly)
Returns the value of attribute value_attribute.
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# File 'lib/attributor/types/hash.rb', line 29 def value_attribute @value_attribute end |
.value_type ⇒ Object
Returns the value of attribute value_type.
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# File 'lib/attributor/types/hash.rb', line 28 def value_type @value_type end |
Instance Attribute Details
#contents ⇒ Object (readonly)
TODO: Think about the format of the subcontexts to use: let’s use .at(key.to_s)
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# File 'lib/attributor/types/hash.rb', line 472 def contents @contents end |
#dumping ⇒ Object (readonly)
Returns the value of attribute dumping.
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# File 'lib/attributor/types/hash.rb', line 528 def dumping @dumping end |
#validating ⇒ Object (readonly)
Returns the value of attribute validating.
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# File 'lib/attributor/types/hash.rb', line 528 def validating @validating end |
Class Method Details
.add_requirement(req) ⇒ Object
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# File 'lib/attributor/types/hash.rb', line 146 def self.add_requirement(req) @requirements << req return unless req.attr_names non_existing = req.attr_names - self.attributes.keys unless non_existing.empty? raise "Invalid attribute name(s) found (#{non_existing.join(', ')}) when defining a requirement of type #{req.type} for #{Attributor.type_name(self)} ." + "The only existing attributes are #{self.attributes.keys}" end end |
.attributes(**options, &key_spec) ⇒ Object
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# File 'lib/attributor/types/hash.rb', line 83 def self.attributes(**, &key_spec) raise @error if @error self.keys(, &key_spec) end |
.check_option!(name, definition) ⇒ Object
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# File 'lib/attributor/types/hash.rb', line 242 def self.check_option!(name, definition) case name when :reference :ok # FIXME ... actually do something smart when :dsl_compiler :ok when :case_insensitive_load unless self.key_type <= String raise Attributor::AttributorException, ":case_insensitive_load may not be used with keys of type #{self.key_type.name}" end :ok when :allow_extra :ok else :unknown end end |
.construct(constructor_block, **options) ⇒ Object
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# File 'lib/attributor/types/hash.rb', line 157 def self.construct(constructor_block, **) return self if constructor_block.nil? unless @concrete return self.of(key:self.key_type, value: self.value_type) .construct(constructor_block,**) end if [:case_insensitive_load] && !(self.key_type <= String) raise Attributor::AttributorException.new(":case_insensitive_load may not be used with keys of type #{self.key_type.name}") end self.keys(, &constructor_block) self end |
.constructable? ⇒ Boolean
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# File 'lib/attributor/types/hash.rb', line 142 def self.constructable? true end |
.definition ⇒ Object
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# File 'lib/attributor/types/hash.rb', line 101 def self.definition opts = { :key_type => @key_type, :value_type => @value_type }.merge(@options) blocks = @saved_blocks.shift(@saved_blocks.size) compiler = dsl_class.new(self, opts) compiler.parse(*blocks) if opts[:case_insensitive_load] == true @insensitive_map = self.keys.keys.each_with_object({}) do |k, map| map[k.downcase] = k end end rescue => e @error = InvalidDefinition.new(self, e) raise end |
.describe(shallow = false, example: nil) ⇒ Object
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# File 'lib/attributor/types/hash.rb', line 433 def self.describe(shallow=false, example: nil) hash = super(shallow) if key_type hash[:key] = {type: key_type.describe(true)} end if self.keys.any? # Spit keys if it's the root or if it's an anonymous structures if ( !shallow || self.name == nil) required_names = [] # FIXME: change to :keys when the praxis doc browser supports displaying those hash[:attributes] = self.keys.each_with_object({}) do |(sub_name, sub_attribute), sub_attributes| required_names << sub_name if sub_attribute.[:required] == true sub_example = example.get(sub_name) if example sub_attributes[sub_name] = sub_attribute.describe(true, example: sub_example) end hash[:requirements] = self.requirements.each_with_object([]) do |req, list| described_req = req.describe(shallow) if described_req[:type] == :all # Add the names of the attributes that have the required flag too described_req[:attributes] |= required_names required_names = [] end list << described_req end # Make sure we create an :all requirement, if there wasn't one so we can add the required: true attributes unless required_names.empty? hash[:requirements] << {type: :all, attributes: required_names } end end else hash[:value] = {type: value_type.describe(true)} end hash end |
.dsl_class ⇒ Object
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# File 'lib/attributor/types/hash.rb', line 121 def self.dsl_class @options[:dsl_compiler] || HashDSLCompiler end |
.dump(value, **opts) ⇒ Object
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# File 'lib/attributor/types/hash.rb', line 233 def self.dump(value, **opts) if loaded = self.load(value) loaded.dump(**opts) else nil end end |
.example(context = nil, **values) ⇒ Object
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# File 'lib/attributor/types/hash.rb', line 203 def self.example(context=nil, **values) if (key_type == Object && value_type == Object && self.keys.empty?) return self.new end context ||= ["#{Hash}-#{rand(10000000)}"] context = Array(context) if self.keys.any? result = self.new result.extend(ExampleMixin) result.lazy_attributes = self.example_contents(context, result, values) else hash = ::Hash.new (rand(3) + 1).times do |i| example_key = key_type.example(context + ["at(#{i})"]) subcontext = context + ["at(#{example_key})"] hash[example_key] = value_type.example(subcontext) end result = self.new(hash) end result end |
.example_contents(context, parent, **values) ⇒ Object
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# File 'lib/attributor/types/hash.rb', line 174 def self.example_contents(context, parent, **values) hash = ::Hash.new example_depth = context.size self.keys.each do |sub_attribute_name, sub_attribute| if sub_attribute.attributes # TODO: add option to raise an exception in this case? next if example_depth > MAX_EXAMPLE_DEPTH end sub_context = self.generate_subcontext(context,sub_attribute_name) block = Proc.new do value = values.fetch(sub_attribute_name) do sub_attribute.example(sub_context, parent: parent) end sub_attribute.load(value,sub_context) end hash[sub_attribute_name] = block end hash end |
.family ⇒ Object
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# File 'lib/attributor/types/hash.rb', line 57 def self.family 'hash' end |
.from_hash(object, context, recurse: false) ⇒ Object
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# File 'lib/attributor/types/hash.rb', line 391 def self.from_hash(object,context, recurse: false) hash = self.new # if the hash definition includes named extra keys, initialize # its value from the object in case it provides some already. # this is to ensure it exists when we handle any extra keys # that may exist in the object later if self.extra_keys sub_context = self.generate_subcontext(context,self.extra_keys) v = object.fetch(self.extra_keys, {}) hash.set(self.extra_keys, v, context: sub_context, recurse: recurse) end object.each do |k,val| next if k == self.extra_keys sub_context = self.generate_subcontext(context,k) hash.set(k, val, context: sub_context, recurse: recurse) end # handle default values for missing keys self.keys.each do |key_name, attribute| next if hash.key?(key_name) sub_context = self.generate_subcontext(context,key_name) default = attribute.load(nil, sub_context, recurse: recurse) hash[key_name] = default unless default.nil? end hash end |
.generate_subcontext(context, key_name) ⇒ Object
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# File 'lib/attributor/types/hash.rb', line 293 def self.generate_subcontext(context, key_name) context + ["key(#{key_name.inspect})"] end |
.inherited(klass) ⇒ Object
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# File 'lib/attributor/types/hash.rb', line 65 def self.inherited(klass) k = self.key_type v = self.value_type klass.instance_eval do @saved_blocks = [] @options = {allow_extra: false} @keys = {} @key_type = k @value_type = v @key_attribute = Attribute.new(@key_type) @value_attribute = Attribute.new(@value_type) @requirements = [] @error = false end end |
.keys(**options, &key_spec) ⇒ Object
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# File 'lib/attributor/types/hash.rb', line 89 def self.keys(**, &key_spec) raise @error if @error if block_given? @saved_blocks << key_spec @options.merge!() elsif @saved_blocks.any? self.definition end @keys end |
.load(value, context = Attributor::DEFAULT_ROOT_CONTEXT, recurse: false, **options) ⇒ Object
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# File 'lib/attributor/types/hash.rb', line 261 def self.load(value,context=Attributor::DEFAULT_ROOT_CONTEXT, recurse: false, **) context = Array(context) if value.nil? if recurse loaded_value = {} else return nil end elsif value.is_a?(self) return value elsif value.kind_of?(Attributor::Hash) loaded_value = value.contents elsif value.is_a?(::Hash) loaded_value = value elsif value.is_a?(::String) loaded_value = decode_json(value,context) elsif value.respond_to?(:to_hash) loaded_value = value.to_hash else raise Attributor::IncompatibleTypeError, context: context, value_type: value.class, type: self end return self.from_hash(loaded_value,context, recurse: recurse) if self.keys.any? return self.new(loaded_value) if (key_type == Object && value_type == Object) loaded_value.each_with_object(self.new) do| (k, v), obj | obj[self.key_type.load(k,context)] = self.value_type.load(v,context) end end |
.native_type ⇒ Object
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# File 'lib/attributor/types/hash.rb', line 125 def self.native_type self end |
.of(key: @key_type, value: @value_type) ⇒ Object
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# File 'lib/attributor/types/hash.rb', line 134 def self.of(key: @key_type, value: @value_type) ::Class.new(self) do self.key_type = key self.value_type = value @keys = {} end end |
.valid_type?(type) ⇒ Boolean
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# File 'lib/attributor/types/hash.rb', line 129 def self.valid_type?(type) type.kind_of?(self) || type.kind_of?(::Hash) end |
.validate(object, context = Attributor::DEFAULT_ROOT_CONTEXT, _attribute) ⇒ Object
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# File 'lib/attributor/types/hash.rb', line 423 def self.validate(object,context=Attributor::DEFAULT_ROOT_CONTEXT,_attribute) context = [context] if context.is_a? ::String unless object.kind_of?(self) raise ArgumentError, "#{self.name} can not validate object of type #{object.class.name} for #{Attributor.humanize_context(context)}." end object.validate(context) end |
Instance Method Details
#==(other) ⇒ Object
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# File 'lib/attributor/types/hash.rb', line 554 def ==(other) contents == other || (other.respond_to?(:contents) ? contents == other.contents : false) end |
#[](k) ⇒ Object
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# File 'lib/attributor/types/hash.rb', line 474 def [](k) @contents[k] end |
#[]=(k, v) ⇒ Object
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# File 'lib/attributor/types/hash.rb', line 482 def []=(k,v) @contents[k] = v end |
#_get_attr(k) ⇒ Object
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# File 'lib/attributor/types/hash.rb', line 478 def _get_attr(k) self[k] end |
#delete(key) ⇒ Object
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# File 'lib/attributor/types/hash.rb', line 524 def delete(key) @contents.delete(key) end |
#dump(**opts) ⇒ Object
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# File 'lib/attributor/types/hash.rb', line 608 def dump(**opts) return CIRCULAR_REFERENCE_MARKER if @dumping @dumping = true contents.each_with_object({}) do |(k,v),hash| k = self.key_attribute.dump(k,opts) if (attribute_for_value = self.class.keys[k]) v = attribute_for_value.dump(v,opts) else v = self.value_attribute.dump(v,opts) end hash[k] = v end ensure @dumping = false end |
#each(&block) ⇒ Object Also known as: each_pair
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# File 'lib/attributor/types/hash.rb', line 486 def each(&block) @contents.each(&block) end |
#empty? ⇒ Boolean
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# File 'lib/attributor/types/hash.rb', line 504 def empty? @contents.empty? end |
#generate_subcontext(context, key_name) ⇒ Object
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# File 'lib/attributor/types/hash.rb', line 297 def generate_subcontext(context, key_name) self.class.generate_subcontext(context,key_name) end |
#get(key, context: self.generate_subcontext(Attributor::DEFAULT_ROOT_CONTEXT,key)) ⇒ Object
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# File 'lib/attributor/types/hash.rb', line 301 def get(key, context: self.generate_subcontext(Attributor::DEFAULT_ROOT_CONTEXT,key)) key = self.class.key_attribute.load(key, context) if self.class.keys.empty? if @contents.key? key value = @contents[key] loaded_value = value_attribute.load(value, context) return self[key] = loaded_value else if self.class.[:case_insensitive_load] key = key.downcase @contents.each do |k,v| if key == k.downcase return self.get(key, context: context) end end end end return nil end value = @contents[key] # FIXME: getting an unset value here should not force it in the hash if (attribute = self.class.keys[key]) loaded_value = attribute.load(value, context) if loaded_value.nil? return nil else return self[key] = loaded_value end end if self.class.[:case_insensitive_load] key = self.class.insensitive_map[key.downcase] return self.get(key, context: context) end if self.class.[:allow_extra] if self.class.extra_keys.nil? return @contents[key] = self.class.value_attribute.load(value, context) else extra_keys_key = self.class.extra_keys if @contents.key? extra_keys_key return @contents[extra_keys_key].get(key, context: context) end end end raise LoadError, "Unknown key received: #{key.inspect} for #{Attributor.humanize_context(context)}" end |
#key?(k) ⇒ Boolean Also known as: has_key?
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# File 'lib/attributor/types/hash.rb', line 508 def key?(k) @contents.key?(k) end |
#key_attribute ⇒ Object
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# File 'lib/attributor/types/hash.rb', line 545 def key_attribute self.class.key_attribute end |
#key_type ⇒ Object
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# File 'lib/attributor/types/hash.rb', line 537 def key_type self.class.key_type end |
#keys ⇒ Object
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# File 'lib/attributor/types/hash.rb', line 496 def keys @contents.keys end |
#merge(h) ⇒ Object
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# File 'lib/attributor/types/hash.rb', line 513 def merge(h) case h when self.class self.class.new(contents.merge(h.contents)) when Attributor::Hash raise ArgumentError, "cannot merge Attributor::Hash instances of different types" unless h.is_a?(self.class) else raise TypeError, "no implicit conversion of #{h.class} into Attributor::Hash" end end |
#set(key, value, context: self.generate_subcontext(Attributor::DEFAULT_ROOT_CONTEXT,key), recurse: false) ⇒ Object
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# File 'lib/attributor/types/hash.rb', line 357 def set(key, value, context: self.generate_subcontext(Attributor::DEFAULT_ROOT_CONTEXT,key), recurse: false) key = self.class.key_attribute.load(key, context) if self.class.keys.empty? return self[key] = self.class.value_attribute.load(value, context) end if (attribute = self.class.keys[key]) return self[key] = attribute.load(value, context, recurse: recurse) end if self.class.[:case_insensitive_load] key = self.class.insensitive_map[key.downcase] return self.set(key, value, context: context) end if self.class.[:allow_extra] if self.class.extra_keys.nil? return self[key] = self.class.value_attribute.load(value, context) else extra_keys_key = self.class.extra_keys unless @contents.key? extra_keys_key extra_keys_value = self.class.keys[extra_keys_key].load({}) @contents[extra_keys_key] = extra_keys_value end return self[extra_keys_key].set(key, value, context: context) end end raise LoadError, "Unknown key received: #{key.inspect} while loading #{Attributor.humanize_context(context)}" end |
#size ⇒ Object
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# File 'lib/attributor/types/hash.rb', line 492 def size @contents.size end |
#validate(context = Attributor::DEFAULT_ROOT_CONTEXT) ⇒ Object
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# File 'lib/attributor/types/hash.rb', line 558 def validate(context=Attributor::DEFAULT_ROOT_CONTEXT) context = [context] if context.is_a? ::String errors = [] if self.class.keys.any? extra_keys = @contents.keys - self.class.keys.keys if extra_keys.any? && !self.class.[:allow_extra] return extra_keys.collect do |k| "#{Attributor.humanize_context(context)} can not have key: #{k.inspect}" end end keys_with_values = Array.new self.class.keys.each do |key, attribute| sub_context = self.class.generate_subcontext(context,key) value = @contents[key] unless value.nil? keys_with_values << key end if value.respond_to?(:validating) # really, it's a thing with sub-attributes next if value.validating end errors.push(*attribute.validate(value, sub_context)) end self.class.requirements.each do |req| validation_errors = req.validate(keys_with_values, context) errors.push(*validation_errors) unless validation_errors.empty? end else @contents.each do |key, value| # FIXME: the sub contexts and error messages don't really make sense here unless key_type == Attributor::Object sub_context = context + ["key(#{key.inspect})"] errors.push(*key_attribute.validate(key, sub_context)) end unless value_type == Attributor::Object sub_context = context + ["value(#{value.inspect})"] errors.push(*value_attribute.validate(value, sub_context)) end end end errors end |
#value_attribute ⇒ Object
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# File 'lib/attributor/types/hash.rb', line 549 def value_attribute self.class.value_attribute end |
#value_type ⇒ Object
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# File 'lib/attributor/types/hash.rb', line 541 def value_type self.class.value_type end |
#values ⇒ Object
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# File 'lib/attributor/types/hash.rb', line 500 def values @contents.values end |