crystal.partial_oneof_module.mustache Maven / Gradle / Ivy
{{#description}}
# {{{.}}}
{{/description}}
module {{classname}}
class << self
{{#oneOf}}
{{#-first}}
# List of class defined in oneOf (OpenAPI v3)
def openapi_one_of
[
{{/-first}}
:'{{{.}}}'{{^-last}},{{/-last}}
{{#-last}}
]
end
{{/-last}}
{{/oneOf}}
{{#discriminator}}
{{#propertyName}}
# Discriminator's property name (OpenAPI v3)
def openapi_discriminator_name
:'{{{.}}}'
end
{{/propertyName}}
{{#mappedModels}}
{{#-first}}
# Discriminator's mapping (OpenAPI v3)
def openapi_discriminator_mapping
{
{{/-first}}
:'{{{mappingName}}}' => :'{{{modelName}}}'{{^-last}},{{/-last}}
{{#-last}}
}
end
{{/-last}}
{{/mappedModels}}
{{/discriminator}}
# Builds the object
# @param [Mixed] Data to be matched against the list of oneOf items
# @return [Object] Returns the model or the data itself
def build(data)
{{#discriminator}}
discriminator_value = data[openapi_discriminator_name]
return nil unless discriminator_value
{{#mappedModels}}
{{#-first}}
klass = openapi_discriminator_mapping[discriminator_value.to_sym]
return nil unless klass
{{moduleName}}.const_get(klass).build_from_hash(data)
{{/-first}}
{{/mappedModels}}
{{^mappedModels}}
{{moduleName}}.const_get(discriminator_value).build_from_hash(data)
{{/mappedModels}}
{{/discriminator}}
{{^discriminator}}
# Go through the list of oneOf items and attempt to identify the appropriate one.
# Note:
# - We do not attempt to check whether exactly one item matches.
# - No advanced validation of types in some cases (e.g. "x: { type: string }" will happily match { x: 123 })
# due to the way the deserialization is made in the base_object template (it just casts without verifying).
# - TODO: scalar values are de facto behaving as if they were nullable.
# - TODO: logging when debugging is set.
openapi_one_of.each do |klass|
begin
next if klass == :AnyType # "nullable: true"
typed_data = find_and_cast_into_type(klass, data)
return typed_data if typed_data
rescue # rescue all errors so we keep iterating even if the current item lookup raises
end
end
openapi_one_of.includes?(:AnyType) ? data : nil
{{/discriminator}}
end
{{^discriminator}}
private
SchemaMismatchError = Class.new(StandardError)
# Note: 'File' is missing here because in the regular case we get the data _after_ a call to JSON.parse.
def find_and_cast_into_type(klass, data)
return if data.nil?
case klass.to_s
when 'Boolean'
return data if data.instance_of?(TrueClass) || data.instance_of?(FalseClass)
when 'Float'
return data if data.instance_of?(Float)
when 'Integer'
return data if data.instance_of?(Integer)
when 'Time'
return Time.parse(data)
when 'Date'
return Date.parse(data)
when 'String'
return data if data.instance_of?(String)
when 'Object' # "type: object"
return data if data.instance_of?(Hash)
when /\AArray<(?.+)>\z/ # "type: array"
if data.instance_of?(Array)
sub_type = Regexp.last_match[:sub_type]
return data.map { |item| find_and_cast_into_type(sub_type, item) }
end
when /\AHash.+)>\z/ # "type: object" with "additionalProperties: { ... }"
if data.instance_of?(Hash) && data.keys.all? { |k| k.instance_of?(Symbol) || k.instance_of?(String) }
sub_type = Regexp.last_match[:sub_type]
return data.each_with_object({}) { |(k, v), hsh| hsh[k] = find_and_cast_into_type(sub_type, v) }
end
else # model
const = {{moduleName}}.const_get(klass)
if const
if const.respond_to?(:openapi_one_of) # nested oneOf model
model = const.build(data)
return model if model
else
# raise if data contains keys that are not known to the model
raise unless (data.keys - const.acceptable_attributes).empty?
model = const.build_from_hash(data)
return model if model && model.valid?
end
end
end
raise # if no match by now, raise
rescue
raise SchemaMismatchError, "#{data} doesn't match the #{klass} type"
end
{{/discriminator}}
end
end