SIMPLE_FORM集合包装(单选按钮)：项目的双重封装 [英] simple_form collection wrapper (radios buttons) : double encapsulation of items

问题描述

我想用Simple_Form重现此单选按钮的html序列，以便使Simple_Form使用http://semantic-ui.com/语法：

  <div class="grouped inline fields">
    <div class="field">
      <div class="ui radio checkbox">
        <input type="radio" name="fruit" checked="">
        <label>Apples</label>
      </div>
    </div>
    <div class="field">
      <div class="ui radio checkbox">
        <input type="radio" name="fruit">
        <label>Oranges</label>
      </div>
    </div>
    <div class="field">
      <div class="ui radio checkbox">
        <input type="radio" name="fruit">
        <label>Pears</label>
      </div>
    </div>
    <div class="field">
      <div class="ui radio checkbox">
        <input type="radio" name="fruit">
        <label>Grapefruit</label>
      </div>
    </div>
  </div>

所以我准备了一个定制的包装器：

config.wrappers :semantic_radios, tag: 'div', class: "grouped fields", error_class:   'error', hint_class: 'with_hint' do |b|
    b.use :html5
    b.use :label
    b.use :input
  end

设置一些选项：

config.item_wrapper_tag = :div
config.item_wrapper_class = 'ui radio checkbox'

并在我的表单中调用此代码：

=f.input :child_care_type, collection: [["option 1", 1],["option 2", 2]], as: :radio_buttons, wrapper: :semantic_radios

我不知道在哪里自定义div.field封装：

    <div class="field">
      <div class="ui radio checkbox">
        <input type="radio" name="fruit" checked="">
        <label>Apples</label>
      </div>
    </div>

我的代码仅呈现以下内容：

  <div class="ui radio checkbox">
    <input type="radio" name="fruit" checked="">
    <label>Apples</label>
  </div>

你能帮我吗？我没有找到更多集合的包装自定义：s

推荐答案

摘要：

我以前做过类似的事情，创建了一个继承自SimpleForm::Inputs::CollectionRadioButtonsInput的自定义输入，并重载了几个方法。有关自定义输入组件的详细信息，请参阅https://github.com/plataformatec/simple_form/wiki/Adding-custom-input-components。

在任何情况下，下面的代码几乎完全使用Simple_Form v2.1.0和rails v3.2.15生成所需的html标记。

代码：

# File: app/inputs/semantic_ui_radio_buttons_input.rb

class SemanticUiRadioButtonsInput < SimpleForm::Inputs::CollectionRadioButtonsInput

  # Creates a radio button set for use with Semantic UI

  def input
    label_method, value_method = detect_collection_methods
    iopts = { 
      :checked => 1,
      :item_wrapper_tag => 'div',
      :item_wrapper_class => 'field',
      :collection_wrapper_tag => 'div',
      :collection_wrapper_class => 'grouped inline fields'
     }
    return @builder.send(
      "collection_radio_buttons",
      attribute_name,
      collection,
      value_method,
      label_method,
      iopts,
      input_html_options,
      &collection_block_for_nested_boolean_style
    )
  end # method

  protected

  def build_nested_boolean_style_item_tag(collection_builder)
    tag = String.new
    tag << '<div class="ui radio checkbox">'.html_safe
    tag << collection_builder.radio_button + collection_builder.label
    tag << '</div>'.html_safe
    return tag.html_safe
  end # method

end # class

然后，在您的表单中，只需执行以下操作：

-# File: app/views/<resource>/_form.html.haml

-# Define the collection
- child_care_coll = %w( Infant Toddler Preschool Kindergarten ).map!.with_index(1).to_a

-# Render the radio inputs
= f.input :child_care_type,
  :collection    => child_care_coll,
  :label_method  => :first,
  :value_method  => :last,
  :as            => :semantic_ui_radio_buttons

结果：

<div class="input semantic_ui_radio_buttons optional childcare_child_care_type">

  <label class="semantic_ui_radio_buttons optional control-label">
    Child care type
  </label>

  <div class="grouped inline fields">

    <div class="field">
      <div class="ui radio checkbox">
        <input checked="checked" class="semantic_ui_radio_buttons optional" id="childcare_child_care_type_1" name="childcare[child_care_type]" type="radio" value="1">
        <label for="childcare_child_care_type_1">Infant</label>
      </div>
    </div>

    ...

    <div class="field">
      <div class="ui radio checkbox">
        <input class="semantic_ui_radio_buttons optional" id="childcare_child_care_type_4" name="childcare[child_care_type]" type="radio" value="4">
        <label for="childcare_child_care_type_4">Kindergarten</label>
      </div>
    </div>

  </div>

</div>

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