module Sequel::Plugins::JsonSerializer::DatasetMethods

Public Instance Methods

json_serializer_opts(opts=OPTS) click to toggle source

Store default options used when calling #to_json on this dataset. These options take precedence over the class level options, and can be overridden by passing options directly to to_json.

# File lib/sequel/plugins/json_serializer.rb, line 385
def json_serializer_opts(opts=OPTS)
  clone(:json_serializer_opts=>opts)
end
to_json(*a) { |res| ... } click to toggle source

Return a JSON string representing an array of all objects in this dataset. Takes the same options as the instance method, and passes them to every instance. Additionally, respects the following options:

:array

An array of instances. If this is not provided, calls all on the receiver to get the array.

:instance_block

A block to pass to to_json for each value in the dataset (or :array option).

:root

If set to :collection, wraps the collection in a root object using the pluralized, underscored model name as the key. If set to :instance, only wraps the instances in a root object. If set to :both, wraps both the collection and instances in a root object. If set to a string, wraps the collection in a root object using the string as the key.

# File lib/sequel/plugins/json_serializer.rb, line 405
def to_json(*a)
  opts = model.json_serializer_opts

  if ds_opts = @opts[:json_serializer_opts]
    opts = opts.merge(ds_opts)
  end

  if (arg = a.first).is_a?(Hash)
    opts = opts.merge(arg)
    a = []
  end

  case collection_root = opts[:root]
  when nil, false, :instance
    collection_root = false
  else
    opts = opts.dup
    unless collection_root == :both
      opts.delete(:root)
    end
    unless collection_root.is_a?(String)
      collection_root = model.send(:pluralize, model.send(:underscore, model.send(:demodulize, model.to_s)))
    end
  end

  res = if row_proc || @opts[:eager_graph] 
    array = if opts[:array]
      opts = opts.dup
      opts.delete(:array)
    else
      all
    end
    JsonSerializer.object_to_json_data(array, opts, &opts[:instance_block])
  else
    all
  end

  res = {collection_root => res} if collection_root
  res = yield res if defined?(yield)

  Sequel.object_to_json(res, *a)
end