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
371 def json_serializer_opts(opts=OPTS)
372   clone(:json_serializer_opts=>opts)
373 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
391 def to_json(*a)
392   opts = model.json_serializer_opts
393 
394   if ds_opts = @opts[:json_serializer_opts]
395     opts = opts.merge(ds_opts)
396   end
397 
398   if (arg = a.first).is_a?(Hash)
399     opts = opts.merge(arg)
400     a = []
401   end
402 
403   case collection_root = opts[:root]
404   when nil, false, :instance
405     collection_root = false
406   else
407     opts = opts.dup
408     unless collection_root == :both
409       opts.delete(:root)
410     end
411     unless collection_root.is_a?(String)
412       collection_root = model.send(:pluralize, model.send(:underscore, model.send(:demodulize, model.to_s)))
413     end
414   end
415 
416   res = if row_proc || @opts[:eager_graph] 
417     array = if opts[:array]
418       opts = opts.dup
419       opts.delete(:array)
420     else
421       all
422     end
423     array.map{|obj| Literal.new(Sequel.object_to_json(obj, opts, &opts[:instance_block]))}
424   else
425     all
426   end
427 
428   res = {collection_root => res} if collection_root
429   res = yield res if block_given?
430 
431   Sequel.object_to_json(res, *a)
432 end