Question

我在表单中使用自定义select_with_new_option方法，如下所示：

<%= select_with_new_option(f, :shop, :name, :id) %>

这是它的定义：

def select_options_with_create_new(objects, text_field, value_field, options={})
  object = objects.to_s.singularize
  all_objects = object.capitalize.constantize.all
  all_objects = all_objects.sort_by(&options[:order_by]) if options.has_key?(:order_by)
  select_options = all_objects.map{ |obj| [obj.send(text_field), obj.send(value_field)] }
  select_options << [wrap_create_new_option("create new #{object}".titleize), "new_#{object}"]
end

def wrap_create_new_option(str)
  ">> #{str} <<"
end

# By default, sorts by 'text_field'.
def select_with_new_option(f, object, text_field, value_field)
  f.select(:"#{object}_id", select_options_with_create_new(object.pluralize, text_field, value_field, :order_by => text_field), 
           {:prompt => true},    # options
           {})                   # html_options
end

这会按预期创建select代码及其option。

现在，我想将select与div这样包裹起来：

<div class='my_class'>
  <select>...</select>
</div>

在＆＃34; Rails方式＆＃34;中最简单的方法是什么？？

Answer 1

如果您不想修改方法，可以将其作为块传递给content_tag方法：

<%= content_tag :div, :class => "my_class" do %>
    <%= select_with_new_option(:f, :shop, :name, :id) %>
<% end %>

Answer 2

使用content_tag方法：

def select_with_new_option(f, object, text_field, value_field)
  html = f.select(:"#{object}_id",
           select_options_with_create_new(object.pluralize, text_field, value_field, :order_by => text_field), 
           {:prompt => true},    # options
           {})                   # html_options
  content_tag :div, html, :class => "my_class"
end

Rails：如何使用“div”标签包装生成的“select”？

2 个答案: