NAME

       Dancer2::Serializer::Mutable - Serialize and deserialize content based on HTTP header

VERSION

       version 0.400000

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) 2022 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.