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
375 def json_serializer_opts(opts=OPTS)
376   clone(:json_serializer_opts=>opts)
377 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
395 def to_json(*a)
396   opts = model.json_serializer_opts
397 
398   if ds_opts = @opts[:json_serializer_opts]
399     opts = opts.merge(ds_opts)
400   end
401 
402   if (arg = a.first).is_a?(Hash)
403     opts = opts.merge(arg)
404     a = []
405   end
406 
407   case collection_root = opts[:root]
408   when nil, false, :instance
409     collection_root = false
410   else
411     opts = opts.dup
412     unless collection_root == :both
413       opts.delete(:root)
414     end
415     unless collection_root.is_a?(String)
416       collection_root = model.send(:pluralize, model.send(:underscore, model.send(:demodulize, model.to_s)))
417     end
418   end
419 
420   res = if row_proc || @opts[:eager_graph] 
421     array = if opts[:array]
422       opts = opts.dup
423       opts.delete(:array)
424     else
425       all
426     end
427     array.map{|obj| Literal.new(Sequel.object_to_json(obj, opts, &opts[:instance_block]))}
428   else
429     all
430   end
431 
432   res = {collection_root => res} if collection_root
433   res = yield res if block_given?
434 
435   Sequel.object_to_json(res, *a)
436 end