NAME
Config::Model::Backend::Json - Read and write config as a JSON data structure
VERSION
version 2.155
SYNOPSIS
use Config::Model ;
use Data::Dumper ;
# define configuration tree object
my $model = Config::Model->new ;
$model ->create_config_class (
name => "MyClass",
element => [
[qw/foo bar/] => {
type => 'leaf',
value_type => 'string'
},
baz => {
type => 'hash',
index_type => 'string' ,
cargo => {
type => 'leaf',
value_type => 'string',
},
},
],
rw_config => {
backend => 'Json' ,
config_dir => '/tmp',
file => 'foo.json',
auto_create => 1,
}
) ;
my $inst = $model->instance(root_class_name => 'MyClass' );
my $root = $inst->config_root ;
my $steps = 'foo=yada bar="bla bla" baz:en=hello
baz:fr=bonjour baz:hr="dobar dan"';
$root->load( steps => $steps ) ;
$inst->write_back ;
Now, /tmp/foo.yml
contains:
{
"bar" : "bla bla",
"foo" : "yada",
"baz" : {
"hr" : "dobar dan",
"en" : "hello",
"fr" : "bonjour"
}
}
DESCRIPTION
This module is used directly by Config::Model to read or write the content of a configuration tree written with Json syntax in Config::Model
configuration tree.
Note that undefined values are skipped for list element. I.e. if a list element contains ('a',undef,'b')
, the data structure only contains 'a','b'
.
CONSTRUCTOR
new
Parameters: ( node => $node_obj, name => 'Json' )
Inherited from Config::Model::Backend::Any. The constructor is called by Config::Model::BackendMgr.
read
Of all parameters passed to this read call-back, only file_path
is used. This parameter must be a Path::Tiny.
When a file is read, read
returns 1.
write
Of all parameters passed to this write call-back, only file_path
is used. This parameter must be Path::Tiny object.
write
returns 1.
AUTHOR
Dominique Dumont, (ddumont at cpan dot org)
SEE ALSO
Config::Model, Config::Model::BackendMgr, Config::Model::Backend::Any,
AUTHOR
Dominique Dumont
COPYRIGHT AND LICENSE
This software is Copyright (c) 2005-2022 by Dominique Dumont.
This is free software, licensed under:
The GNU Lesser General Public License, Version 2.1, February 1999