Module: Kojac::ControllerOpMethods

Defined in:
lib/kojac/kojac_rails.rb

Class Method Summary collapse

Class Method Details

.add_op ⇒ Object

def execute_op puts ‘execute_op’ end



492
493
494
495
496
497
498
499
500
501
502
503
504
505
506
507
508
509
510
511
512
513
514
515
516
517
518
519
520
521
522
523
 
# File 'lib/kojac/kojac_rails.rb', line 492

def add_op
	ring = current_ring
	op = params[:op]
	model = deduce_model_class
	raise "ADD only supports associated collections at present eg order.items" unless op[:key].index('.')

	item = KojacUtils.model_for_key(op[:key].base_key)
	assoc = (assoc=op[:key].key_assoc) && assoc.to_sym
	id = op[:value]['id']

	ma = item.class.reflect_on_association(assoc)
	case ma.macro
		when :has_many
			assoc_class = ma.klass
			assoc_item = assoc_class.find(id)
			item.send(assoc) << assoc_item

			#ids_method = assoc.to_s.singularize+'_ids'
			#ids = item.send(ids_method.to_sym)
			#item.send((ids_method+'=').to_sym,ids + [id])
			result_key = assoc_item.kojac_key
			merge_model_into_results(assoc_item)
		else
			raise "ADD does not yet support #{ma.macro} associations"
	end
	{
		key: op[:key],
	  verb: op[:verb],
	  result_key: result_key,
	  results: results
	}
end

.create_on_association(aItem, aAssoc, aValues, aRing) ⇒ Object 



234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
 
# File 'lib/kojac/kojac_rails.rb', line 234

def create_on_association(aItem,aAssoc,aValues,aRing)
	raise "User does not have permission for create on #{aAssoc}" unless aItem.class.ring_can?(aRing,:create_on,aAssoc.to_sym)

	return nil unless ma = aItem.class.reflect_on_association(aAssoc.to_sym)
	a_model_class = ma.klass
	policy = Kojac.policy!(kojac_current_user,a_model_class)

	aValues = KojacUtils.upgrade_hashes_to_params(aValues || {})

	case ma.macro
		when :belongs_to
			return nil if !aValues.is_a?(Hash)
			fields = aValues.permit( *policy.permitted_fields(:write) )
			a_model_class.write_op_filter(current_user,fields,aValues) if a_model_class.respond_to? :write_op_filter
			return aItem.send("build_#{aAssoc}".to_sym,fields)
		when :has_many
			aValues = [aValues] if aValues.is_a?(Hash)
			return nil unless aValues.is_a? Array
			aValues.each do |v|
				fields = v.permit( *policy.permitted_fields(:write) )
				new_sub_item = nil
				case ma.macro
					when :has_many
						a_model_class.write_op_filter(current_user,fields,aValues) if a_model_class.respond_to? :write_op_filter
						new_sub_item = aItem.send(aAssoc.to_sym).create(fields)
					else
						raise "#{ma.macro} association unsupported in CREATE"
				end
				merge_model_into_results(new_sub_item)
			end
	end
	#
	#
	#
	#a_value = op[:value][a]        # get data for this association, assume {}
	#if a_value.is_a?(Hash)
	#	a_model_class = ma.klass
	#	fields = a_value.permit( *permitted_fields(:write,a_model_class) )
	#	item.send("build_#{a}".to_sym,fields)
	#	included_assocs << a.to_sym
	#elsif a_value.is_a?(Array)
	#	raise "association collections not yet implemented for create"
	#else
	#	next
	#end
end

.create_op ⇒ Object 



281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
 
# File 'lib/kojac/kojac_rails.rb', line 281

def create_op
	ring = current_ring
	op = params[:op]
	options = op[:options] || {}
	model_class = deduce_model_class
	resource,id,assoc = op['key'].split_kojac_key
	if assoc  # create operation on an association eg. {verb: "CREATE", key: "order.items"}
		raise "User does not have permission for #{op[:verb]} operation on #{model_class.to_s}.#{assoc}" unless model_class.ring_can?(ring,:create_on,assoc.to_sym)
		item = KojacUtils.model_for_key(key_join(resource,id))
		ma = model_class.reflect_on_association(assoc.to_sym)
		a_value = op[:value]        # get data for this association, assume {}
		raise "create multiple not yet implemented for associations" unless a_value.is_a?(Hash)

		a_model_class = ma.klass
		policy = Kojac.policy!(kojac_current_user,a_model_class)
		p_fields = policy.permitted_fields(:write)
		fields = a_value.permit( *p_fields )
		new_sub_item = nil
		case ma.macro
			when :has_many
				a_model_class.write_op_filter(current_user,fields,a_value) if a_model_class.respond_to? :write_op_filter
				new_sub_item = item.send(assoc.to_sym).create(fields)
			else
				raise "#{ma.macro} association unsupported in CREATE"
		end
		result_key = op[:result_key] || new_sub_item.kojac_key
		merge_model_into_results(new_sub_item)
	else    # create operation on a resource eg. {verb: "CREATE", key: "order_items"} but may have embedded association values
		policy = Kojac.policy!(kojac_current_user,model_class)
		p_fields = policy.permitted_fields(:write)
		raise "User does not have permission for #{op[:verb]} operation on #{model_class.to_s}" unless model_class.ring_can?(:create,ring)

		p_fields = op[:value].permit( *p_fields )
		model_class.write_op_filter(current_user,p_fields,op[:value]) if model_class.respond_to? :write_op_filter
		item = model_class.create!(p_fields)

		options_include = options['include'] || []
		included_assocs = []
		p_assocs = policy.permitted_associations(:write)
		if p_assocs
			p_assocs.each do |a|
				next unless (a_value = op[:value][a]) || options_include.include?(a.to_s)
				create_on_association(item,a,a_value,ring)
				included_assocs << a.to_sym
			end
		end
		item.save!
		result_key = op[:result_key] || item.kojac_key
		merge_model_into_results(item,result_key,:include => included_assocs)
	end
	{
		key: op[:key],
	  verb: op[:verb],
	  result_key: result_key,
	  results: results
	}
end

.current_ring ⇒ Object 



230
231
232
 
# File 'lib/kojac/kojac_rails.rb', line 230

def current_ring
	kojac_current_user.try(:ring).to_i
end

.deduce_model_class ⇒ Object 



218
219
220
 
# File 'lib/kojac/kojac_rails.rb', line 218

def deduce_model_class
	KojacUtils.model_class_for_key(self.kojac_resource)
end

.destroy_op ⇒ Object 



473
474
475
476
477
478
479
480
481
482
483
484
485
486
 
# File 'lib/kojac/kojac_rails.rb', line 473

def destroy_op
	ring = current_ring
	op = params[:op]
	result_key = op[:result_key] || op[:key]
	item = KojacUtils.model_for_key(op[:key])
	item.destroy if item
	results[result_key] = nil
	{
		key: op[:key],
	  verb: op[:verb],
	  result_key: result_key,
	  results: results
	}
end

.execute_op ⇒ Object 



559
560
561
562
563
564
565
566
567
568
569
570
571
572
573
574
575
576
577
578
579
580
581
582
583
 
# File 'lib/kojac/kojac_rails.rb', line 559

def execute_op
	op = params[:op]
	resource,action = op[:key].split_kojac_key
	raise "action not given" unless action.is_a? String
	action = "execute_#{action}"
	raise "action #{action} not implemented on #{resource}" unless respond_to? action.to_sym
	result = send(action.to_sym,op)
	if op[:error]
		{
			key: op[:key],
		  verb: op[:verb],
			error: op[:error]
		}
	else
		result_key = op[:result_key] || op[:key]
		results = op[:results] || {}             # look at op[:results][result_key]. If empty, fill with returned value from action
		results[result_key] = KojacUtils.to_jsono(result,scope: kojac_current_user) unless results.has_key? result_key
		{
			key: op[:key],
			verb: op[:verb],
			result_key: result_key,
			results: results
		}
	end
end

.included(aClass) ⇒ Object 



199
200
201
202
203
 
# File 'lib/kojac/kojac_rails.rb', line 199

def self.included(aClass)
  #aClass.send :extend, ClassMethods
  aClass.send :include, ActiveSupport::Callbacks
  aClass.send :define_callbacks, :update_op, :scope => [:kind, :name]
end

.kojac_current_user ⇒ Object 



226
227
228
 
# File 'lib/kojac/kojac_rails.rb', line 226

def kojac_current_user
	self.current_user
end

.kojac_resource ⇒ Object 



222
223
224
 
# File 'lib/kojac/kojac_rails.rb', line 222

def kojac_resource
	self.class.to_s.chomp('Controller').snake_case
end

.read_op ⇒ Object 



377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
 
# File 'lib/kojac/kojac_rails.rb', line 377

def read_op
	op = params[:op]
	key = op[:key]
	result_key = nil
	resource,id = key.split '__'
	model = deduce_model_class
	scope = Kojac.policy_scope(current_user, model, op) || model
	if id   # item
		if scope
			item = scope.load_by_key(key,op)
			#item = item.first
			#item.prepare(key,op) if item.respond_to? :prepare
			result_key = op[:result_key] || (item && item.kojac_key) || op[:key]
			merge_model_into_results(item,result_key,op[:options])
		else
			result_key = op[:result_key] || op[:key]
			results[result_key] = null
		end
	else    # collection
		result_key = op[:result_key] || op[:key]
		results[result_key] = []
		if scope
			items = scope.load_by_key(key,op)
			#items = scope.by_key(key,op)
			#items = items.all
			items.each do |item|
				item.prepare(key,op) if item.respond_to? :prepare
			end
			if op[:options] and op[:options][:atomise]==false
				items_json = []
				items_json = items.map {|i| KojacUtils.to_jsono(i,scope: kojac_current_user) }
				results[result_key] = items_json
			else
				items.each do |m|
					item_key = m.kojac_key
					results[result_key] << item_key.split_kojac_key[1]
					merge_model_into_results(m,item_key,op[:options])
				end
			end
		end
	end
	{
		key: op[:key],
	  verb: op[:verb],
	  results: results,
	  result_key: result_key
	}
end

.remove_op ⇒ Object 



525
526
527
528
529
530
531
532
533
534
535
536
537
538
539
540
541
542
543
544
545
546
547
548
549
550
551
552
553
554
555
556
557
 
# File 'lib/kojac/kojac_rails.rb', line 525

def remove_op
	ring = current_ring
	op = params[:op]
	model = deduce_model_class
	raise "REMOVE only supports associated collections at present eg order.items" unless op[:key].key_assoc

	item = KojacUtils.model_for_key(op[:key].base_key)
	assoc = (assoc=op[:key].key_assoc) && assoc.to_sym
	id = op[:value]['id']

	ma = item.class.reflect_on_association(assoc)
	case ma.macro
		when :has_many
			assoc_class = ma.klass
			if assoc_item = item.send(assoc).find(id)
				item.send(assoc).delete(assoc_item)
				result_key = assoc_item.kojac_key
				if (assoc_item.destroyed?)
					results[result_key] = nil
				else
					merge_model_into_results(assoc_item,result_key)
				end
			end
		else
			raise "REMOVE does not yet support #{ma.macro} associations"
	end
	{
		key: op[:key],
	  verb: op[:verb],
	  result_key: result_key,
	  results: results
	}
end

.results ⇒ Object 



214
215
216
 
# File 'lib/kojac/kojac_rails.rb', line 214

def results
	@results ||= {}
end

.update_op ⇒ Object 



426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
441
442
443
444
445
446
447
448
449
450
451
452
453
454
455
456
457
458
459
460
461
462
463
464
465
466
467
468
469
470
471
 
# File 'lib/kojac/kojac_rails.rb', line 426

def update_op
	result = nil
	ring = current_ring
	op = params[:op]
	result_key = nil
	model = deduce_model_class
	scope = Kojac.policy_scope(current_user, model, op) || model

	if self.item = scope.load_by_key(op[:key],op)

		run_callbacks :update_op do
			policy = Kojac.policy!(kojac_current_user,item,op)
			item.update_permitted_attributes!(op[:value], policy)

			associations = policy.permitted_associations(:write)
			associations.each do |k|
				next unless assoc = model.reflect_on_association(k)
				next unless op[:value][k]
				case assoc.macro
					when :belongs_to
						if leaf = (item.send(k) || item.send("build_#{k}".to_sym))
							policy = Kojac.policy!(kojac_current_user,leaf)
							leaf.update_permitted_attributes!(op[:value][k], policy)
						end
				end
			end

			result_key = item.kojac_key
			#results[result_key] = item
			merge_model_into_results(item,result_key,op[:options])

			associations.each do |a|
				next unless assoc_item = item.send(a)
				next unless key = assoc_item.respond_to?(:kojac_key) && assoc_item.kojac_key
				#results[key] = assoc_item
				merge_model_into_results(assoc_item,key)
			end
		end
	end
	{
		key: op[:key],
	  verb: op[:verb],
	  result_key: result_key,
	  results: results
	}
end