Rails3 act_as_taggable 带有一个表单 [英] Rails3 acts_as_taggable with a form

问题描述

我刚刚开始使用acts_as_taggable gem.到目前为止真的很喜欢它，但我有点不清楚如何将这个 gem 与表单一起使用.

I've just started working with the acts_as_taggable gem. Really liking it so far, but I am a bit unclear about how to use this gem with a form.

class Photo < ActiveRecord::Base
  acts_as_taggable_on :tags
end

在我的照片表单中，我试图为用户实现一系列复选框来为他们的照片分配标签:

In my form for Photos I am trying to implement a series of checkboxes for the user to assign tags to their photo:

<%= f.label :tag_list %>
<%= f.check_box :tag_list, "landscape" %>
<%= f.check_box :tag_list, "people" %>

查看表单时出现此错误:

When viewing the form I get this error:

NoMethodError in Photos#edit
...line #19 raised:

undefined method `merge' for "landscape":String
Extracted source (around line #19):

18:     <div class="float_tag">
19:       <%= f.check_box :tag_list, "landscape" %>

对我应该如何创建表单有任何想法吗?

Any thoughts as to how I should create my form?

推荐答案

我假设你的

看起来像这样:

I'm assuming your <form> looks something like this:

<%= form_for(@photo) do |f| %>
  <%= f.label :tag_list %>
  <%= f.check_box :tag_list, "landscape" %>
  <%= f.check_box :tag_list, "people" %>
<% end %>

你应该稍微改变一下你的 f.checkbox 行:

You should change up your f.checkbox lines a bit:

<%= form_for(@photo) do |f| %>
  <%= f.label :tag_list %>
  <%= f.check_box :tag_list, { :multiple => true }, 'landscape', nil %>
  <%= f.check_box :tag_list, { :multiple => true }, 'people', nil %>
<% end %>

提交时会发布类似的内容(例如，仅选择人员):

Which will post something like this when submitted (with only people selected, for example):

{ :post => { :tag_list => ['', 'people'] } }

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