我正在尝试在我的 Rails 4 应用程序中实现 act_as_taggable(在 microposts 模型上),但程序没有保存标签,因此不可见。标签和标签的表格已被收集并存在于数据库中,但我实现的代码似乎都没有在提交表单时保存标签或创建标签。我几乎完全按照本教程中的步骤进行操作,但似乎没有什么效果。
我不确定这是否是一个以 Rails 4 为中心的问题和/或与 Rails 中缺少“attr_accessible”代码有关。由于代码示例没有指定向 microposts 表添加任何内容,因此我只能假设连接是在其他地方建立的,但是我不知道应该在哪里以及如何修复它(也许在 microposts_helper.rb 中?)。
提前致谢。任何帮助是极大的赞赏。
相关代码片段
宝石文件
...
gem 'acts-as-taggable-on', '~> 2.4.1'
...
微博.rb
class Micropost < ActiveRecord::Base
belongs_to :user
acts_as_taggable
acts_as_taggable_on :tags
...
end
microposts_controller.rb
before_action :signed_in_user, only: [:create, :destroy]
before_action :correct_user, only: :destroy
def index
if params[:tag]
@microposts = Micropost.tagged_with(params[:tag])
else
@microposts = Micropost.all
end
end
def create
@micropost = current_user.microposts.build(micropost_params)
if @micropost.save
flash[:success] = "Micropost created!"
redirect_to current_user
else
@feed_items = []
render 'users/show'
end
end
def destroy
@micropost.destroy
redirect_to user_url
end
def tagged
if params[:tag].present?
@microposts = Micropost.tagged_with(params[:tag])
else
@microposts = Micropost.postall
end
end
private
def micropost_params
params.require(:micropost).permit(:content)
end
def correct_user
@micropost = current_user.microposts.find_by(id: params[:id])
redirect_to user_url if @micropost.nil?
end
end
microposts_helper.rb
module MicropostsHelper
include ActsAsTaggableOn::TagsHelper
end
_microposts_form.html.rb
<%= form_for(@micropost) do |f| %>
...
<div class="field">
...
<%= f.label :tags %>
<%= f.text_field :tag_list %>
</div>
<%= f.submit "Post", class: "btn btn-large btn-primary" %>
<% end %>
_micropost.erb.html
<li>
<span class="content"><%= micropost.content %></span>
<span class="tags">
<%= micropost.tag_list %>
</span>
...
</li>
架构.rb
...
create_table "microposts", force: true do |t|
t.string "content"
t.integer "user_id"
t.datetime "created_at"
t.datetime "updated_at"
end
add_index "microposts", ["user_id", "created_at"], name: "index_microposts_on_user_id_and_created_at"
...
create_table "taggings", force: true do |t|
t.integer "tag_id"
t.integer "taggable_id"
t.string "taggable_type"
t.integer "tagger_id"
t.string "tagger_type"
t.string "context", limit: 128
t.datetime "created_at"
end
add_index "taggings", ["tag_id"], name: "index_taggings_on_tag_id"
add_index "taggings", ["taggable_id", "taggable_type", "context"], name: "index_taggings_on_taggable_id_and_taggable_type_and_context"
create_table "tags", force: true do |t|
t.string "name"
end
...
路线.rb
Dev::Application.routes.draw do
...
resources :microposts, only: [:create, :destroy]
...
match 'tagged', to: 'microposts#tagged', :as => 'tagged', via: 'get'
end