Question

我在active-admin

中有以下输入

f.inputs 'Programme description' do
  f.input :nationalities, 
    as: :select, 
    hint: 'Nationalität des Suchenden', 
    collection: all_countries,
    input_html: {multiple: true, class: 'select2', style: 'width: 70%'}
end

请注意，有三个名称为programme[nationality_ids][]的表单字段。

<li class="select input optional" id="programme_nationalities_input">

<input name="programme[nationality_ids][]" type="hidden" value="" />

<label class="label" for="programme_nationality_ids">Nationalities</label>

<input name="programme[nationality_ids][]" type="hidden" value="" />

<select class="select2" 
  id="programme_nationality_ids" 
  multiple="multiple" 
  name="programme[nationality_ids][]" 
  placeholder="Type country name" 
  style="width: 70%">

<option value="CH">Switzerland</option>
<option value="LI">Liechtenstein</option>
<option value="DE">Germany</option>
<option value="AT">Austria</option>
<option value="FR">France</option>
<option value="IT">Italy</option>

</select>

这些插入的隐藏表单字段会导致空参数，从而导致异常，因为空字符串转换为0，并且找不到id=0的对象。< / p>

如何清理这些参数，从而避免例外。

"nationality_ids"=>["", "", "FR"]

Answer 1

在包含以下格式的ActiveAdmin模型中：

controller do
  def create
    params[:programme][:nationality_ids].reject! {|nat_id| nat_id.blank?}
    create!
  end

  def update
    params[:programme][:nationality_ids].reject! {|nat_id| nat_id.blank?}
    update!
  end
end

重复的表单字段有许多导致空白参数和错误

1 个答案: