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# File 'lib/document_record.rb', line 54
def document_field name, options = {}
raise "Field must exist in record in order to become a document field" unless column_names.include? name.to_s
class_eval do
alias_method :regular_assign_attributes, :assign_attributes
alias_method :regular_method_missing, :method_missing
alias_method :regular_save, :save
@@_document_field_name = name
@@_schema_fields = options[:schema_fields] || []
@@_index_fields ||= []
def read_serialized_hash_attribute field_name
raw = read_attribute field_name
raw && Serializer.load( raw ) || {}
end
def write_serialized_hash_attribute field_name, hash
write_attribute field_name, Serializer.dump(hash)
end
def document
@document ||= ::DocumentHash::Core[read_serialized_hash_attribute(@@_document_field_name)].tap do |d|
d.before_change do |path, value|
key = path.join "_"
value = case self.class.columns_hash[key].type
when :integer then value.to_i
else value
end if self.class.columns_hash[key]
value
end
d.after_change do |path, value|
key = path.join "_"
write_attribute key, value if self.class.columns_hash[key]
end
end
end
def save *arguments
save_document
regular_save *arguments
end
def save! *arguments
save(*arguments) || raise(RecordNotSaved)
end
def touch!
self.document.touch!
save
end
def save_document
write_serialized_hash_attribute @@_document_field_name, document.to_hash
end
def assign_attributes new_attributes, options = {}
new_attributes.each do | key, value |
assign_key = :"#{key}="
method_missing assign_key, value
self.send assign_key, value if self.respond_to? assign_key
end
end
def method_missing method, *args
if method =~ /(.*)=$/
write_document $1, args.shift
else
read_document method.to_s
end
end
def is_schema_field? attribute
@@_schema_fields.include? attribute.to_sym
end
def read_document attribute
if is_schema_field? attribute
read_attribute attribute
else
document[attribute] || read_attribute(attribute)
end
end
def write_document attribute, value
if is_schema_field? attribute
write_attribute attribute, value
else
document[attribute] = value
end
end
def is_indexed? attr
self.class.column_names.include? attr.to_s
end
def as_json options = {}
included_fields = super.select{ |k, v|
@@_schema_fields.include?( k.to_sym )
}.stringify_keys!
document.to_hash( stringify_keys: true ).
merge( included_fields ).
merge( method_values(options) )
end
def method_values options
{}.tap do | result |
return result unless options[:methods].is_a? Array
options[:methods].each do | method |
result[method] = self.__send__(method)
end
end
end
def _deep_key_values hash = nil, path = []
hash = document.to_hash unless hash
result = []
hash.each do | k, v |
current = path.dup
current << k
if v.is_a? Hash
result += _deep_key_values hash[ k ], current
else
result += [ current.join("_"), v ]
end
end
result
end
def deep_key_values
Hash[*_deep_key_values]
end
def deep_keys
deep_key_values.keys
end
end
column_names.each do |column|
class_eval " def \#{column}\n # document[\"\#{column}\"] || read_attribute(\"\#{column}\")\n read_document \"\#{ column }\"\n end\n\n def \#{column}= value\n # document[\"\#{column}\"] = value\n write_document \"\#{ column }\", value\n end\n METHOD\n end\nend\n"
|