将数组传递给f.select ruby​​ on rails

Question

在views / cards / _form中的我的rails应用程序中，我有f.select字段的代码：

<%= f.select :tag_speciality, options_for_select(@subdomain.tag_speciality), {}, {class: 'form-control'} %>

这给了我输出：

<select class="form-control" name="card[tag_speciality]" id="card_tag_speciality">
  <option value="Professor de Yoga">Professor de Yoga</option>
  <option value="Professora de Yoga">Professora de Yoga</option>
  <option value="Estúdio de Yoga">Estúdio de Yoga</option>
</select>

在我的迁移文件中，我有：

add_column :cards, :tag_speciality, :string, array: true

当我转到表格并选择任何选项时，例如＆＃34; de Yoga＆＃34;教授，并保存，我得到结果：

[]

而不是：

["Professor de Yoga"]

这是我的控制者：

＆＃13;

＆＃13;

  def index
    @cards = Card.all
  end

  def create
    @card = @user.cards.new card_params

    respond_to do |format|
      if @card.save
        format.html { redirect_to cards_from_subdomain_path(@subdomain.id), notice: 'Card was successfully created.' }
        format.json { render :show, status: :created, location: @card }
      else
        format.html { render :new }
        format.json { render json: @card.errors, status: :unprocessable_entity }
      end
    end
  end

  def update
    respond_to do |format|
      if @card.update(card_params)
        format.html { redirect_to cards_from_subdomain_path(@subdomain.id), notice: 'Card was successfully updated.' }
        format.json { render :show, status: :ok, location: @card }
      else
        format.html { render :edit }
        format.json { render json: @card.errors, status: :unprocessable_entity }
      end
    end
  end
 
  # Never trust parameters from the scary internet, only allow the white list through.
  def card_params
    params.require(:card).permit(
      :name,
      :phone,
      :email,
      :cover,
      :is_published,
      :subdomain_id,
      :domain_id,
      :profile_id,
      :is_solidarity,
      :tag_speciality,
      :tag_location,
      user_id: []
    )
  end
end

＆＃13;

＆＃13;

＆＃13;

我有什么遗失的吗？ 感谢

Answer 1

由于您的tag_speciality是一个数组列，您需要在控制器中使用数组方法分配数据。

@card.tag_speciality.push(card_params[:tag_speciality])
@card.save

当然，您还需要修改其他属性的分配。顺便说一下，您可以看到服务器日志中出现了什么问题。在这种情况下，您应该看到数据库拒绝提交。

Answer 2

同上@ EJ2015。

添加

@card.tag_speciality.push(card_params[:tag_speciality])
@card.save

到create。

respond_to do |format|
      if @card.tag_speciality.push(card_params[:tag_speciality]) && @card.save
        format.html { redirect_to cards_from_subdomain_path(@subdomain.id), notice: 'Card was successfully created.' }
        format.json { render :show, status: :created, location: @card }
      else
        format.html { render :new }
        format.json { render json: @card.errors, status: :unprocessable_entity }
      end
    end