使用Rails 5，如何使FriendlyId附加-"count + 1"?复制弹头而不是UUID?

问题描述

显然FriendlyId已更改，它是以前的默认方法，该方法是将数字序列附加到重复的段塞(这是我想要的)，以现在使用UUID:

Apparently FriendlyId has changed it's previously default method of appending a numeric sequence to duplicate slugs (which is what I want) to now use UUID:

Previous versions of FriendlyId appended a numeric sequence to make slugs unique, but this was removed to simplify using FriendlyId in concurrent code.

此功能目前不是我感兴趣的，并且更希望具有可产生更简洁URL的原始方法.我发现了一个类似的问题，其中有人提供了下面的代码来覆盖friendlyId normalize_friendly_id方法以获得我的功能m之后，但使用它会导致错误(wrong number of arguments (given 1, expected 0)):

This functionality is not something I'm interested in at this time and would much prefer to have the original method that results in a cleaner URL. I found a similar question where someone provided the below code to override the friendlyId normalize_friendly_id method to get to the functionality I'm after, but using it results in an error (wrong number of arguments (given 1, expected 0)):

def normalize_friendly_id
  count = self.count "name = #{name}"
  super + "-" + count if name > 0
end

我试图将其转换"为friendlyId候选"，但我真的不知道自己在做什么，以下内容不起作用.关于如何调整name_candidate方法以产生我所得到的结果的任何想法?

I attempted to "convert" this into a friendlyId "candidate" but I don't really know what I'm doing and the below doesn't work. Any thoughts on how I could tweak the name_candidate method to produce the result I'm afer?

class Folder < ApplicationRecord
  extend FriendlyId
  friendly_id :name_candidates, use: [ :slugged, :scoped ], scope: :account_id

  has_ancestry

  belongs_to :account
  has_many :notes, dependent: :destroy

  validates :name, presence: true

  # # https://stackoverflow.com/a/25380607/523051
  # # overrride friendlyId to append -number to duplicate folders instead of uuid's
  # def normalize_friendly_id
  #   count = self.count "name = #{name}"
  #   super + "-" + count if name > 0
  # end

  def name_candidates
    append_number = self.count "name = #{name}" if name > 0
    [
      :name,
      :name, append_number
    ]
  end
end

请注意，我正在使用friendlyId的:scoped功能，因此检查现有文件夹名称的范围应正确设置为:account_id.

Note I am utilizing the :scoped functionality of friendlyId, so checks for existing folder names should be correctly scoped to :account_id.

推荐答案

friendly_id 5现在具有slug_candidates，可让您自定义该slug.

friendly_id 5 now has a slug_candidates that lets you customize the slug.

因此，要生成顺序的段塞，您可以执行以下操作:

So to generate a sequential slug you could do:

friendly_id :slug_candidates, use: :slugged

def slug_candidates
  [:name, :name_and_sequence]
end

def name_and_sequence
  slug = normalize_friendly_id(name)
  sequence = Model.where("slug like '#{slug}--%'").count + 2
  "#{slug}--#{sequence}"
end

在以下问题中对此进行了讨论: https://github.com/norman/friendly_id/issues/480

This is discussed in the following issue:https://github.com/norman/friendly_id/issues/480

根据作者的说法，连续的弹头不利于性能

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