class Exception - json: Ruby Standard Library Documentation

# class Exception

### Public Class Methods

json_create(object) click to toggle source

See `as_json`.

    # File json/lib/json/add/exception.rb, line 9
    def self.json_create(object)
      result = new(object['m'])
      result.set_backtrace object['b']
      result
    end

### Public Instance Methods

as_json(*) click to toggle source

Methods `Exception#as_json` and `Exception.json_create` may be used to serialize and deserialize a Exception object; see Marshal.

Method `Exception#as_json` serializes `self`, returning a 2-element hash representing `self`:

    require 'json/add/exception'
    x = Exception.new('Foo').as_json # => {"json_class"=>"Exception", "m"=>"Foo", "b"=>nil}

Method `JSON.create` deserializes such a hash, returning a Exception object:

    Exception.json_create(x) # => #<Exception: Foo>

    # File json/lib/json/add/exception.rb, line 29
    def as_json(*)
      {
        JSON.create_id => self.class.name,
        'm'            => message,
        'b'            => backtrace,
      }
    end

to_json(*args) click to toggle source

Returns a `JSON` string representing `self`:

    require 'json/add/exception'
    puts Exception.new('Foo').to_json

Output:

    {"json_class":"Exception","m":"Foo","b":null}

    # File json/lib/json/add/exception.rb, line 46
    def to_json(*args)
      as_json.to_json(*args)
    end