NAME
Dancer2::Serializer::Mutable - Serialize and deserialize content based on HTTP header
VERSION
version 1.1.2
SYNOPSIS
# in config.yml
serializer: Mutable
engines:
serializer:
Mutable:
mapping:
'text/x-yaml' : YAML
'text/html' : YAML
'text/x-data-dumper' : Dumper
'text/x-json' : JSON
'application/json' : JSON
# in the app
put '/something' => sub {
# deserialized from request
my $name = param( 'name' );
...
# will be serialized to the most
# fitting format
return { message => "user $name added" };
};
DESCRIPTION
This serializer will try find the best (de)serializer for a given request. For this, it will pick the first valid content type found from the following list and use its related serializer.
The content_type from the request headers
the accept from the request headers
The default is application/json
The content-type/serializer mapping that Dancer2::Serializer::Mutable
uses is
serializer | content types
----------------------------------------------------------
Dancer2::Serializer::YAML | text/x-yaml, text/html
Dancer2::Serializer::Dumper | text/x-data-dumper
Dancer2::Serializer::JSON | text/x-json, application/json
A different mapping can be provided via the config file. For example, the default mapping would be configured as
engines:
serializer:
Mutable:
mapping:
'text/x-yaml' : YAML
'text/html' : YAML
'text/x-data-dumper' : Dumper
'text/x-json' : JSON
'application/json' : JSON
The keys of the mapping are the content-types to serialize, and the values the serializers to use. Serialization for YAML
, Dumper
and JSON
are done using internal Dancer mechanisms. Any other serializer will be taken to be as Dancer2 serialization class (minus the Dancer2::Serializer::
prefix) and an instance of it will be used to serialize/deserialize data. For example, adding Dancer2::Serializer::XML to the mapping would be:
engines:
serializer:
Mutable:
mapping:
'text/x-yaml' : YAML
'text/html' : YAML
'text/x-data-dumper' : Dumper
'text/x-json' : JSON
'text/xml' : XML
INTERNAL METHODS
The following methods are used internally by Dancer2
and are not made accessible via the DSL.
serialize
Serialize a data structure. The format it is serialized to is determined automatically as described above. It can be one of YAML, Dumper, JSON, defaulting to JSON if there's no clear preference from the request.
deserialize
Deserialize the provided serialized data to a data structure. The type of serialization format depends on the request's content-type. For now, it can be one of YAML, Dumper, JSON.
content_type
Returns the content-type that was used during the last serialize
/ deserialize
call. WARNING : you must call serialize
/ deserialize
before calling content_type
. Otherwise the return value will be undef
.
AUTHOR
Dancer Core Developers
COPYRIGHT AND LICENSE
This software is copyright (c) 2024 by Alexis Sukrieh.
This is free software; you can redistribute it and/or modify it under the same terms as the Perl 5 programming language system itself.