使用主人的Rails 4和Mongoid 4
由于某些奇怪的原因,当记录验证失败时(但有效时,我没有获得重复的子记录)然后呈现给用户的表单中有额外的记录
我有一个Pipeline,它有很多PipelineStages
将舞台名称编辑为空白(验证失败)会复制所有Pipeline.pipeline_stages
class Pipeline
include Mongoid::Document
has_many :pipeline_stages, dependent: :destroy
accepts_nested_attributes_for :pipeline_stages, allow_destroy: true
end
class PipelineStage
include Mongoid::Document
belongs_to :pipeline
validates :name, presence: true, length: { maximum:50 }
end
因此,当传入控制器时,使用update_attributes时看似完全有效的params不起作用
[1] pry(#<PipelinesController>)> valid_params
=> {"name"=>"ddd",
"pipeline_stages_attributes"=>
{"0"=>
{"id"=>"534f170e4a616b8368960000",
"name"=>"dddd",
"_destroy"=>"false",
"sort_order"=>"9999"},
"1"=>
{"id"=>"534f1b554a616b8368a70000",
"name"=>"",
"_destroy"=>"false",
"sort_order"=>"9999"}}}
[2] pry(#<PipelinesController>)> @pipeline.pipeline_stages
=> [#<PipelineStage _id: 534f170e4a616b8368960000, created_at: 2014-04-16 23:49:34 UTC, updated_at: 2014-04-16 23:49:34 UTC, pipeline_id: BSON::ObjectId('534f170e4a616b8368950000'), name: "dddd", stage_number: nil, sort_order: 9999>,
#<PipelineStage _id: 534f1b554a616b8368a70000, created_at: 2014-04-17 00:07:49 UTC, updated_at: 2014-04-17 00:07:57 UTC, pipeline_id: BSON::ObjectId('534f170e4a616b8368950000'), name: "asdasdsadasd2", stage_number: nil, sort_order: 9999>]
[3] pry(#<PipelinesController>)> @pipeline.update_attributes(valid_params)
=> false
[4] pry(#<PipelinesController>)> @pipeline.pipeline_stages
=> [#<PipelineStage _id: 534f170e4a616b8368960000, created_at: 2014-04-16 23:49:34 UTC, updated_at: 2014-04-16 23:49:34 UTC, pipeline_id: BSON::ObjectId('534f170e4a616b8368950000'), name: "dddd", stage_number: nil, sort_order: 9999>,
#<PipelineStage _id: 534f1b554a616b8368a70000, created_at: 2014-04-17 00:07:49 UTC, updated_at: 2014-04-17 00:07:57 UTC, pipeline_id: BSON::ObjectId('534f170e4a616b8368950000'), name: "asdasdsadasd2", stage_number: nil, sort_order: 9999>,
#<PipelineStage _id: 534f170e4a616b8368960000, created_at: 2014-04-16 23:49:34 UTC, updated_at: 2014-04-16 23:49:34 UTC, pipeline_id: BSON::ObjectId('534f170e4a616b8368950000'), name: "dddd", stage_number: nil, sort_order: 9999>,
#<PipelineStage _id: 534f1b554a616b8368a70000, created_at: 2014-04-17 00:07:49 UTC, updated_at: 2014-04-17 00:07:57 UTC, pipeline_id: BSON::ObjectId('534f170e4a616b8368950000'), name: "", stage_number: nil, sort_order: 9999>]