rails的tags包：act-as-taggable-on 原创邦

rails的tags包：act-as-taggable-on

tags标签在内容管理系统里面是非常常见，也是很重要。你需要通过标签来给内容分类。

act-as-taggable-on非常的强大，github上4.8k的stars了.
下面简单介绍下
一个人会有多种类型的标签，比如：技能、兴趣、运动等，标签特别灵活，无法预先定义字段来存储，可能又加一个地域标签、或者方言标签等。
act-as-taggable-on 允许你详细指定一个随意数量的标签种类，

install and init

gem 'acts-as-taggable-on', '~>7.0'

bundle

rake acts_as_taggable_on_engine:intall:migrations

使用


class User < ActiveRecord::Base
  acts_as_taggable_on :tags
  acts_as_taggable_on :skills, :interests 
end

class UsersController < ApplicationController
  def user_params
    params.require(:user).permit(:name, :tag_list)
  end
end

@user = User.new(:name => "Bobby")

Add and remove a single tag

@user.tag_list.add("awesome")   # add a single tag. alias for <<
@user.tag_list.remove("awesome") # remove a single tag
@user.save

@user.tag_list.add("awesome", "slick")
@user.tag_list.remove("awesome", "slick")
@user.save


# add parse: true ,自动解析

@user.tag_list.add("awesome, slick", parse: true)
@user.tag_list.remove("awesome, slick", parse: true)

#还有种写法

@user.tag_list = "awesome, slick, hefty"
@user.save
@user.reload

With the defined context in model, you have multiple new methods at disposal to manage and view the tags in the context. For example, with :skill context these methods are added to the model: skill_list(and skill_list.add, skill_list.remove skill_list=), skills(plural), skill_counts.

保留tags的顺序的话，用的是

acts_as_ordered_taggable_on :tags

Finding most or least used tags

You can find the most or least used tags by using:

ActsAsTaggableOn::Tag.most_used
ActsAsTaggableOn::Tag.least_used

You can also filter the results by passing the method a limit, however the default limit is 20.

ActsAsTaggableOn::Tag.most_used(10)
ActsAsTaggableOn::Tag.least_used(10)

常用的也就这些，还有些设置tag的owner的见：https://github.com/mbleigh/acts-as-taggable-on

阅读量: 683
发布于: 2021-05-21
修改于: 2021-05-21