我正在尝试将act_as_taggable实现到我的Rails 4应用程序中(在微博模型上),但程序没有保存标签,因此无法查看。标签和标签的表已经过调整并存在于数据库中,但是我提供的代码似乎都没有提交标签或在提交表单时创建标签。我完全按照tutorial附近的步骤进行了操作,但似乎没有用。
我不确定它是否是以rails 4为中心的问题和/或是否与rails中使用的'attr_accessible'代码相关。由于代码示例没有指定向微博表添加任何内容,我只能假设连接是在其他地方进行的,但我应该在哪里以及如何修复我不知道(在microposts_helper.rb中可能?)。
提前致谢。非常感谢任何帮助。
相关代码片段
的Gemfile
...
gem 'acts-as-taggable-on', '~> 2.4.1'
...
microposts.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>
schema.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
...
的routes.rb
Dev::Application.routes.draw do
...
resources :microposts, only: [:create, :destroy]
...
match 'tagged', to: 'microposts#tagged', :as => 'tagged', via: 'get'
end
答案 0 :(得分:4)
如果我正确理解了这个问题,那么你应该做的就是告诉建议的params(strong_parameters)关于act-as-taggable gem的保护模型。你已经半途而废了:
private
def micropost_params
params.require(:micropost).permit(:content)
end
[...]
end
只需添加:
private
def micropost_params
params.require(:micropost).permit(:content, :tag_list => [])
end
[...]
end
此外,您可能希望在routes.rb文件中添加一个内容。替换行:
resources :microposts, only: [:create, :destroy]
使用:
resources :microposts, only: [:create, :destroy, :tag]
请告诉我这些建议是否有效。祝你好运!
答案 1 :(得分:0)
我认为表单中标签的输入变量应为 tags_list 。即
<%= form_for(@micropost) do |f| %>
...
<div class="field">
...
<%= f.label :tags %>
<%= f.text_field :tags_list %>
</div>
<%= f.submit "Post", class: "btn btn-large btn-primary" %>
<% end %>
并更新_micropost.erb.html
以使用 tags_list 。
或者您可以更新您的模型以使用标记属性,即'acts_as_taggable_on :tag
'