Mysql 保存多个复选框rails 4

我有多个复选框需要保存在mysql DB表中。 他设法保留了所有的表单字段，除了多个复选框。 我需要序列化保存它们，我该怎么做

_form.html.erb

---

ActiveRecord:：Base.serialize

例如：

class User < ActiveRecord::Base
  serialize : news_source_ids
end

user = Emission.create(:scholarship=> { "name" => "test", "news_source_ids" => ["1", "2"]})
Emission.find(usernews_source.id).scholarship# => { "name" => "test", "news_source_ids" => ["1", "2"] }

class用户{“name”=>“test”，“news\u source\u id”=>[“1”，“2”]}）
Emission.find（usernews\u source.id）.scholarship{“name”=>“test”，“news\u source\u id”=>[“1”，“2”]}

  def create
raise params.inspect
@emission = Emission.new(emission_params)

respond_to do |format|
  if @emission.save
    format.html { redirect_to @emission, notice: 'La emisión fue creada correctamente.' }
    format.json { render :show, status: :created, location: @emission }
  else
    format.html { render :new }
    format.json { render json: @emission.errors, status: :unprocessable_entity }
  end
 end
end

class User < ActiveRecord::Base
  serialize : news_source_ids
end

user = Emission.create(:scholarship=> { "name" => "test", "news_source_ids" => ["1", "2"]})
Emission.find(usernews_source.id).scholarship# => { "name" => "test", "news_source_ids" => ["1", "2"] }