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Author image Valters Skrupskis


DBIx::Result::Convert::JSONSchema - Convert DBIx result schema to JSON schema

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    use DBIx::Result::Convert::JSONSchema;

    my $SchemaConvert = DBIx::Result::Convert::JSONSchema->new( schema => Schema );
    my $json_schema = $SchemaConvert->get_json_schema( DBIx::Class::ResultSource );


This module attempts basic conversion of DBIx::Class::ResultSource to equivalent of http://json-schema.org/. By default the conversion assumes that the DBIx::Class::ResultSource originated from MySQL database. Thus all the types and defaults are set based on MySQL field definitions. It is, however, possible to overwrite field type map and length map to support DBIx::Class::ResultSource from other database solutions.

Note, relations between tables are not taken in account!


Returns somewhat equivalent JSON schema based on DBIx result source name.

    my $json_schema = $converted->get_json_schema( 'TableSource', {
        schema_declaration              => 'http://json-schema.org/draft-04/schema#',
        decimals_to_pattern             => 1,
        has_schema_property_description => 1,
        allow_additional_properties     => 0,
        ignore_property_defaults        => 1,
        overwrite_schema_property_keys  => {
            name    => 'cat',
            address => 'dog',
        add_schema_properties           => {
            address => { ... },
            bank_account => '#/definitions/bank_account',
        overwrite_schema_properties     => {
            name => {
                _action  => 'merge', # one of - merge/overwrite
                minimum  => 10,
                maximum  => 20,
                type     => 'number',
        include_required   => [ qw/ street city / ],
        exclude_required   => [ qw/ name address / ],
        exclude_properties => [ qw/ mouse house / ],

        dependencies => {
            first_name => [ qw/ middle_name last_name / ],

Optional arguments to change how JSON schema is generated:

  • schema_declaration

    Declare which version of the JSON Schema standard that the schema was written against.


    Default: "http://json-schema.org/schema#"

  • decimals_to_pattern

    1/0 - value to indicate if 'number' type field should be converted to 'string' type with RegExp pattern based on decimal place definition in database.

    Default: 0

  • has_schema_property_description

    Generate schema description for fields e.g. 'Optional numeric type value for field context e.g. 1'.

    Default: 0

  • ignore_property_defaults

    Do not set schema default property field based on default in DBIx schema

    Default: 0

  • allow_additional_properties

    Define if the schema accepts additional keys in given payload.

    Default: 0

  • add_property_minimum_value

    If field does not have format type add minimum values for number and string types based on DB field type. This might not make sense in most cases as the minimum is either 0 or the lower bound if number is signed.

    Default: 0

  • overwrite_schema_property_keys

    HashRef representing mapping between old property name and new property name to overwrite existing schema keys, Properties from old key will be assigned to the new property.

    Note The key conversion is executed last, every other option e.g. exclude_properties will work only on original database column names.

  • overwrite_schema_properties

    HashRef of property name and new attributes which can be either overwritten or merged based on given _action key.

  • exclude_required

    ArrayRef of database column names which should always be EXCLUDED from REQUIRED schema properties.

  • include_required

    ArrayRef of database column names which should always be INCLUDED in REQUIRED schema properties

  • exclude_properties

    ArrayRef of database column names which should be excluded from JSON schema AT ALL

  • dependencies


  • add_schema_properties

    HashRef of custom schema properties that must be included in final definition Note that custom properties will overwrite defaults

  • schema_overwrite

    HashRef of top level schema properties e.g. 'required', 'properties' etc. to overwrite


DBIx::Class::ResultSource - Result source object


malishew - malishew@cpan.org


This library is free software; you can redistribute it and/or modify it under the same terms as Perl itself. If you would like to contribute documentation or file a bug report then please raise an issue / pull request: