如何仅导入 XenForo 的主题？并将其移动到 Disc 的特定类别中
我们可以迁移 XenForo 的主题吗？！我很确定那是不可能的
1 个赞
*主题
抱歉 
如果你查看我在这里的帖子，Jay 会回复我的一篇帖子，其中包含对 xenforo.rb 脚本的修改，以实现此功能。
2 个赞
我在最后一步遇到了错误：
正在导入私信...
找不到主题 ID 0，跳过第 0 个帖子的第 14 条
1 / 28302 ( 0.0%) [80733 条/分钟] 找不到主题 ID 0，跳过第 0 个帖子的第 15 条
2 / 28302 ( 0.0%) [115895 条/分钟] 找不到主题 ID 0，跳过第 0 个帖子的第 17 条
3 / 28302 ( 0.0%) [141468 条/分钟] 找不到主题 ID 0，跳过第 0 个帖子的第 18 条
4 / 28302 ( 0.0%) [160596 条/分钟] 找不到主题 ID 0，跳过第 0 个帖子的第 22 条
5 / 28302 ( 0.0%) [158134 条/分钟] 找不到主题 ID 0，跳过第 0 个帖子的第 28 条
6 / 28302 ( 0.0%) [167920 条/分钟] 找不到主题 ID 0，跳过第 0 个帖子的第 29 条
7 / 28302 ( 0.0%) [178637 条/分钟] 找不到主题 ID 0，跳过第 0 个帖子的第 44 条
8 / 28302 ( 0.0%) [188301 条/分钟] 找不到主题 ID 0，跳过第 0 个帖子的第 45 条
9 / 28302 ( 0.0%) [196423 条/分钟] 找不到主题 ID 0，跳过第 0 个帖子的第 48 条
10 / 28302 ( 0.0%) [202985 条/分钟] 找不到主题 ID 0，跳过第 0 个帖子的第 50 条
11 / 28302 ( 0.0%) [204726 条/分钟] 找不到主题 ID 0，跳过第 0 个帖子的第 51 条
12 / 28302 ( 0.0%) [209394 条/分钟] 找不到主题 ID 0，跳过第 0 个帖子的第 52 条
13 / 28302 ( 0.0%) [213452 条/分钟] 找不到主题 ID 0，跳过第 0 个帖子的第 55 条
14 / 28302 ( 0.0%) [217192 条/分钟] /var/www/discourse/vendor/bundle/ruby/3.2.0/gems/php_serialize-1.2/lib/php_serialize.rb:315:in `do_unserialize': 无法反序列化类型 '{' (TypeError)
raise TypeError, "Unable to unserialize type '#{type}'"
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
from /var/www/discourse/vendor/bundle/ruby/3.2.0/gems/php_serialize-1.2/lib/php_serialize.rb:214:in `unserialize'
from script/import_scripts/xenforo.rb:349:in `block (2 levels) in import_private_messages'
from /var/www/discourse/script/import_scripts/base.rb:548:in `block in create_posts'
from /var/www/discourse/vendor/bundle/ruby/3.2.0/gems/rack-mini-profiler-3.3.1/lib/patches/db/mysql2/alias_method.rb:8:in `each'
from /var/www/discourse/vendor/bundle/ruby/3.2.0/gems/rack-mini-profiler-3.3.1/lib/patches/db/mysql2/alias_method.rb:8:in `each'
from /var/www/discourse/script/import_scripts/base.rb:547:in `create_posts'
from script/import_scripts/xenforo.rb:325:in `block in import_private_messages'
from /var/www/discourse/script/import_scripts/base.rb:948:in `block in batches'
from /var/www/discourse/script/import_scripts/base.rb:947:in `loop'
from /var/www/discourse/script/import_scripts/base.rb:947:in `batches'
from script/import_scripts/xenforo.rb:314:in `import_private_messages'
from script/import_scripts/xenforo.rb:45:in `execute'
from /var/www/discourse/script/import_scripts/base.rb:47:in `perform'
from script/import_scripts/xenforo.rb:569:in `<main>'
有人能帮帮我吗？
我会在失败的地方加上一个 puts，或者在调用 php serialize 的地方添加一个 rescue。
但如果所有这些 pm 都失败了，那么 pm 导入器可能不兼容你的 XenForo 版本。所以你可能需要检查它正在执行的查询。
在不深入你的数据库和代码的情况下，我只能提出这些建议了。
2 个赞
Maybe someone will need it in the future.
My modified importer with repaired attachments, avatars, likes (reactions in new xenforo) and still broken pms (bcs i dont need it).
# frozen_string_literal: true
require "mysql2"
begin
require "php_serialize" # https://github.com/jqr/php-serialize
rescue LoadError
puts
puts "php_serialize not found."
puts "Add to Gemfile, like this: "
puts
puts "echo gem \\'php-serialize\\' >> Gemfile"
puts "bundle install"
exit
end
require File.expand_path(File.dirname(__FILE__) + "/base.rb")
# Call it like this:
# RAILS_ENV=production bundle exec ruby script/import_scripts/xenforo.rb
class ImportScripts::XenForo < ImportScripts::Base
XENFORO_DB = "import_db"
TABLE_PREFIX = "xf_"
BATCH_SIZE = 1000
ATTACHMENT_DIR = "/shared/attachments"
AVATAR_DIR = "/shared/avatars"
def initialize
super
@client =
Mysql2::Client.new(
host: "localhost",
username: "root",
password: "password",
database: "import_db",
)
@category_mappings = {}
@prefix_as_category = false
end
def execute
import_users
import_categories
import_posts
# import_private_messages
import_likes
end
def import_avatar(id, imported_user)
filename = File.join(AVATAR_DIR, "l", (id / 1000).to_s, "#{id}.jpg")
return nil unless File.exist?(filename)
upload = create_upload(imported_user.id, filename, "avatar_#{id}")
return if !upload.persisted?
imported_user.create_user_avatar
imported_user.user_avatar.update(custom_upload_id: upload.id)
imported_user.update(uploaded_avatar_id: upload.id)
end
def import_users
puts "", "creating users"
total_count =
mysql_query(
"SELECT count(*) count FROM #{TABLE_PREFIX}user WHERE user_state = 'valid' AND is_banned = 0;",
).first[
"count"
]
batches(BATCH_SIZE) do |offset|
results =
mysql_query(
"SELECT user_id id, username, email, custom_title title, register_date created_at,
last_activity last_visit_time, user_group_id, is_moderator, is_admin, is_staff
FROM #{TABLE_PREFIX}user
WHERE user_state = 'valid' AND is_banned = 0
LIMIT #{BATCH_SIZE}
OFFSET #{offset};",
)
break if results.size < 1
next if all_records_exist? :users, results.map { |u| u["id"].to_i }
create_users(results, total: total_count, offset: offset) do |user|
next if user["username"].blank?
{
id: user["id"],
email: user["email"],
username: user["username"],
title: user["title"],
created_at: Time.zone.at(user["created_at"]),
last_seen_at: Time.zone.at(user["last_visit_time"]),
moderator: user["is_moderator"] == 1 || user["is_staff"] == 1,
admin: user["is_admin"] == 1,
post_create_action: proc { |u| import_avatar(user["id"], u) },
}
end
end
end
def import_categories
puts "", "importing categories..."
categories =
mysql_query(
"
SELECT node_id id,
title,
description,
parent_node_id,
node_name,
display_order
FROM #{TABLE_PREFIX}node
ORDER BY parent_node_id, display_order
",
).to_a
top_level_categories = categories.select { |c| c["parent_node_id"] == 0 }
create_categories(top_level_categories) do |c|
{
id: c["id"],
name: c["title"],
description: c["description"],
position: c["display_order"],
post_create_action:
proc do |category|
url = "board/#{c["node_name"]}"
Permalink.find_or_create_by(url: url, category_id: category.id)
end,
}
end
top_level_category_ids = Set.new(top_level_categories.map { |c| c["id"] })
subcategories = categories.select { |c| top_level_category_ids.include?(c["parent_node_id"]) }
create_categories(subcategories) do |c|
{
id: c["id"],
name: c["title"],
description: c["description"],
position: c["display_order"],
parent_category_id: category_id_from_imported_category_id(c["parent_node_id"]),
post_create_action:
proc do |category|
url = "board/#{c["node_name"]}"
Permalink.find_or_create_by(url: url, category_id: category.id)
end,
}
end
subcategory_ids = Set.new(subcategories.map { |c| c["id"] })
# deeper categories need to be tags
categories.each do |c|
next if c["parent_node_id"] == 0
next if top_level_category_ids.include?(c["id"])
next if subcategory_ids.include?(c["id"])
# Find a subcategory for topics in this category
parent = c
while !parent.nil? && !subcategory_ids.include?(parent["id"])
parent = categories.find { |subcat| subcat["id"] == parent["parent_node_id"] }
end
if parent
tag_name = DiscourseTagging.clean_tag(c["title"])
@category_mappings[c["id"]] = {
category_id: category_id_from_imported_category_id(parent["id"]),
tag: Tag.find_by_name(tag_name) || Tag.create(name: tag_name),
}
else
puts "", "Couldn't find a category for #{c["id"]} '#{c["title"]}'!"
end
end
end
# This method is an alternative to import_categories.
# It uses prefixes instead of nodes.
def import_categories_from_thread_prefixes
puts "", "importing categories..."
categories =
mysql_query(
"
SELECT prefix_id id
FROM #{TABLE_PREFIX}thread_prefix
ORDER BY prefix_id ASC
",
).to_a
create_categories(categories) do |category|
{ id: category["id"], name: "Category-#{category["id"]}" }
end
@prefix_as_category = true
end
def import_likes
puts "", "importing likes"
total_count =
mysql_query(
"SELECT COUNT(*) AS count FROM #{TABLE_PREFIX}reaction_content WHERE content_type = 'post'",
).first[
"count"
]
batches(BATCH_SIZE) do |offset|
results =
mysql_query(
"SELECT reaction_content_id, content_id, reaction_user_id, reaction_date
FROM #{TABLE_PREFIX}reaction_content
WHERE content_type = 'post'
ORDER BY reaction_content_id
LIMIT #{BATCH_SIZE}
OFFSET #{offset};",
)
break if results.size < 1
create_likes(results, total: total_count, offset: offset) do |row|
{
post_id: row["content_id"],
user_id: row["reaction_user_id"],
created_at: Time.zone.at(row["reaction_date"]),
}
end
end
end
def import_posts
puts "", "creating topics and posts"
total_count = mysql_query("SELECT count(*) count from #{TABLE_PREFIX}post").first["count"]
posts_sql =
"
SELECT p.post_id id,
t.thread_id topic_id,
#{@prefix_as_category ? "t.prefix_id" : "t.node_id"} category_id,
t.title title,
t.first_post_id first_post_id,
t.view_count,
p.user_id user_id,
p.message raw,
p.post_date created_at
FROM #{TABLE_PREFIX}post p,
#{TABLE_PREFIX}thread t
WHERE p.thread_id = t.thread_id
AND p.message_state = 'visible'
AND t.discussion_state = 'visible'
ORDER BY p.post_date
LIMIT #{BATCH_SIZE}" # needs OFFSET
batches(BATCH_SIZE) do |offset|
results = mysql_query("#{posts_sql} OFFSET #{offset};").to_a
break if results.size < 1
next if all_records_exist? :posts, results.map { |p| p["id"] }
create_posts(results, total: total_count, offset: offset) do |m|
skip = false
mapped = {}
mapped[:id] = m["id"]
mapped[:user_id] = user_id_from_imported_user_id(m["user_id"]) || -1
mapped[:raw] = process_xenforo_post(m["raw"], m["id"])
mapped[:created_at] = Time.zone.at(m["created_at"])
if m["id"] == m["first_post_id"]
if m["category_id"].to_i == 0 || m["category_id"].nil?
mapped[:category] = SiteSetting.uncategorized_category_id
else
mapped[:category] = category_id_from_imported_category_id(m["category_id"].to_i) ||
@category_mappings[m["category_id"]].try(:[], :category_id)
end
mapped[:title] = CGI.unescapeHTML(m["title"])
mapped[:views] = m["view_count"]
mapped[:post_create_action] = proc do |pp|
Permalink.find_or_create_by(url: "threads/#{m["topic_id"]}", topic_id: pp.topic_id)
end
else
parent = topic_lookup_from_imported_post_id(m["first_post_id"])
if parent
mapped[:topic_id] = parent[:topic_id]
else
puts "Parent post #{m["first_post_id"]} doesn't exist. Skipping #{m["id"]}: #{m["title"][0..40]}"
skip = true
end
end
skip ? nil : mapped
end
end
# Apply tags
batches(BATCH_SIZE) do |offset|
results = mysql_query("#{posts_sql} OFFSET #{offset};").to_a
break if results.size < 1
results.each do |m|
next unless m["id"] == m["first_post_id"] && m["category_id"].to_i > 0
next unless tag = @category_mappings[m["category_id"]].try(:[], :tag)
next unless topic_mapping = topic_lookup_from_imported_post_id(m["id"])
topic = Topic.find_by_id(topic_mapping[:topic_id])
topic.tags = [tag] if topic
end
end
end
def import_private_messages
puts "", "importing private messages..."
post_count = mysql_query("SELECT COUNT(*) count FROM xf_conversation_message").first["count"]
batches(BATCH_SIZE) do |offset|
posts = mysql_query <<-SQL
SELECT c.conversation_id, c.recipients, c.title, m.message, m.user_id, m.message_date, m.message_id, IF(c.first_message_id != m.message_id, c.first_message_id, 0) as topic_id
FROM xf_conversation_master c
LEFT JOIN xf_conversation_message m ON m.conversation_id = c.conversation_id
ORDER BY c.conversation_id, m.message_id
LIMIT #{BATCH_SIZE}
OFFSET #{offset}
SQL
break if posts.size < 1
next if all_records_exist? :posts, posts.map { |post| "pm_#{post["message_id"]}" }
create_posts(posts, total: post_count, offset: offset) do |post|
user_id = user_id_from_imported_user_id(post["user_id"]) || Discourse::SYSTEM_USER_ID
title = post["title"]
message_id = "pm_#{post["message_id"]}"
raw = process_xenforo_post(post["message"], 0)
if raw.present?
msg = {
id: message_id,
user_id: user_id,
raw: raw,
created_at: Time.zone.at(post["message_date"].to_i),
import_mode: true,
}
if post["topic_id"] <= 0
topic_id = post["topic_id"]
if t = topic_lookup_from_imported_post_id("pm_#{topic_id}")
msg[:topic_id] = t[:topic_id]
else
puts "Topic ID #{topic_id} not found, skipping post #{post["message_id"]} from #{post["user_id"]}"
next
end
else
msg[:title] = post["title"]
msg[:archetype] = Archetype.private_message
to_user_array = PHP.unserialize(post["recipients"])
if to_user_array.size > 0
discourse_user_ids = to_user_array.keys.map { |id| user_id_from_imported_user_id(id) }
usernames = User.where(id: [discourse_user_ids]).pluck(:username)
msg[:target_usernames] = usernames.join(",")
end
end
msg
else
puts "Empty message, skipping post #{post["message_id"]}"
next
end
end
end
end
def process_xenforo_post(raw, import_id)
s = raw.dup
# :) is encoded as <!-- s:) --><img src="{SMILIES_PATH}/icon_e_smile.gif" alt=":)" title="Smile" /><!-- s:) -->
s.gsub!(%r{<!-- s(\S+) --><img (?:[^>]+) /><!-- s(?:\S+) -->}, '\1')
# Some links look like this: <!-- m --><a class="postlink" href="http://www.onegameamonth.com">http://www.onegameamonth.com</a><!-- m -->
s.gsub!(%r{<!-- \w --><a(?:.+)href="(\S+)"(?:.*)>(.+)</a><!-- \w -->}, '[\2](\1)')
# Many phpbb bbcode tags have a hash attached to them. Examples:
# [url=https://google.com:1qh1i7ky]click here[/url:1qh1i7ky]
# [quote="cybereality":b0wtlzex]Some text.[/quote:b0wtlzex]
s.gsub!(/:(?:\w{8})\]/, "]")
# Remove mybb video tags.
s.gsub!(%r{(^\[video=.*?\])|(\[/video\]$)}, "")
s = CGI.unescapeHTML(s)
# phpBB shortens link text like this, which breaks our markdown processing:
# [http://answers.yahoo.com/question/index ... 223AAkkPli](http://answers.yahoo.com/question/index?qid=20070920134223AAkkPli)
#
#Fix for the error: xenforo.rb: 160: in `gsub!': invalid byte sequence in UTF-8 (ArgumentError)
s = s.encode("UTF-16be", invalid: :replace, replace: "?").encode("UTF-8") if !s.valid_encoding?
# Work around it for now:
s.gsub!(%r{\[http(s)?://(www\.)?}, "[")
# [QUOTE]...[/QUOTE]
s.gsub!(%r{\[quote\](.+?)\[/quote\]}im) { "\n> #{$1}\n" }
# Nested Quotes
s.gsub!(%r{(\[/?QUOTE.*?\])}mi) { |q| "\n#{q}\n" }
# [QUOTE="username, post: 28662, member: 1283"]
s.gsub!(/\[quote="(\w+), post: (\d*), member: (\d*)"\]/i) do
username, imported_post_id, _imported_user_id = $1, $2, $3
topic_mapping = topic_lookup_from_imported_post_id(imported_post_id)
if topic_mapping
"\n[quote=\"#{username}, post:#{topic_mapping[:post_number]}, topic:#{topic_mapping[:topic_id]}\"]\n"
else
"\n[quote=\"#{username}\"]\n"
end
end
# [URL=...]...[/URL]
s.gsub!(%r{\[url="?(.+?)"?\](.+?)\[/url\]}i) { "[#{$2}](#{$1})" }
# [URL]...[/URL]
s.gsub!(%r{\[url\](.+?)\[/url\]}i) { " #{$1} " }
# [IMG]...[/IMG]
s.gsub!(%r{\[/?img\]}i, "")
# convert list tags to ul and list=1 tags to ol
# (basically, we're only missing list=a here...)
s.gsub!(%r{\[list\](.*?)\[/list\]}im, '[ul]\1[/ul]')
s.gsub!(%r{\[list=1\](.*?)\[/list\]}im, '[ol]\1[/ol]')
s.gsub!(%r{\[list\](.*?)\[/list:u\]}im, '[ul]\1[/ul]')
s.gsub!(%r{\[list=1\](.*?)\[/list:o\]}im, '[ol]\1[/ol]')
# convert *-tags to li-tags so bbcode-to-md can do its magic on phpBB's lists:
s.gsub!(/\[\*\]\n/, "")
s.gsub!(%r{\[\*\](.*?)\[/\*:m\]}, '[li]\1[/li]')
s.gsub!(/\[\*\](.*?)\n/, '[li]\1[/li]')
s.gsub!(/\[\*=1\]/, "")
# [YOUTUBE]<id>[/YOUTUBE]
s.gsub!(%r{\[youtube\](.+?)\[/youtube\]}i) { "\nhttps://www.youtube.com/watch?v=#{$1}\n" }
# [youtube=425,350]id[/youtube]
s.gsub!(%r{\[youtube="?(.+?)"?\](.+?)\[/youtube\]}i) do
"\nhttps://www.youtube.com/watch?v=#{$2}\n"
end
# [MEDIA=youtube]id[/MEDIA]
s.gsub!(%r{\[MEDIA=youtube\](.+?)\[/MEDIA\]}i) { "\nhttps://www.youtube.com/watch?v=#{$1}\n" }
# [ame="youtube_link"]title[/ame]
s.gsub!(%r{\[ame="?(.+?)"?\](.+?)\[/ame\]}i) { "\n#{$1}\n" }
# [VIDEO=youtube;<id>]...[/VIDEO]
s.gsub!(%r{\[video=youtube;([^\]]+)\].*?\[/video\]}i) do
"\nhttps://www.youtube.com/watch?v=#{$1}\n"
end
# [USER=706]@username[/USER]
s.gsub!(%r{\[user="?(.+?)"?\](.+?)\[/user\]}i) { $2 }
# Remove the color tag
s.gsub!(/\[color=[#a-z0-9]+\]/i, "")
s.gsub!(%r{\[/color\]}i, "")
# [HR]...[/HR]
s.gsub!(%r{\[/?hr\]}i, "\n")
# [CENTER]...[/CENTER]
s.gsub!(%r{\[/?CENTER\]}i, "")
# [HEADING=1]id[/HEADING]
s.gsub!(%r{\[HEADING=1\](.+?)\[/HEADING\]}i) { "#{$1}\n" }
if Dir.exist? ATTACHMENT_DIR
s = process_xf_attachments(:gallery, s, import_id)
s = process_xf_attachments(:attachment, s, import_id)
end
s
end
def process_xf_attachments(xf_type, s, import_id)
ids = Set.new
ids.merge(s.scan(get_xf_regexp(xf_type)).map { |x| x[0].to_i })
# not all attachments have an [ATTACH=] tag so we need to get the other ID's from the xf_attachment table
if xf_type == :attachment && import_id > 0
sql =
"SELECT attachment_id FROM #{TABLE_PREFIX}attachment WHERE content_id=#{import_id} and content_type='post';"
ids.merge(mysql_query(sql).to_a.map { |v| v["attachment_id"].to_i })
end
ids.each do |id|
next unless id
sql = get_xf_sql(xf_type, id).dup.squish!
results = mysql_query(sql)
if results.size < 1
# Strip attachment
s.gsub!(get_xf_regexp(xf_type, id), "")
STDERR.puts "#{xf_type.capitalize} id #{id} not found in source database. Stripping."
next
end
original_filename = results.first["filename"]
result = results.first
upload =
import_xf_attachment(
result["data_id"],
result["file_hash"],
result["user_id"],
original_filename,
)
if upload && upload.present? && upload.persisted?
html = @uploader.html_for_upload(upload, original_filename)
s = s + "\n\n#{html}\n\n" unless s.gsub!(get_xf_regexp(xf_type, id), html)
else
STDERR.puts "Could not process upload: #{original_filename}. Skipping attachment id #{id}"
end
end
s
end
def import_xf_attachment(data_id, file_hash, owner_id, original_filename)
current_filename = "#{data_id}-#{file_hash}.data"
path = Pathname.new(ATTACHMENT_DIR + "/#{data_id / 1000}/#{current_filename}")
new_path = path.dirname + original_filename
upload = nil
if File.exist? path
FileUtils.cp path, new_path
upload = @uploader.create_upload owner_id, new_path, original_filename
FileUtils.rm new_path
else
STDERR.puts "Could not find file #{path}. Skipping attachment id #{data_id}"
end
upload
end
def get_xf_regexp(type, id = nil)
case type
when :gallery
Regexp.new(/\[GALLERY=media,\s#{id ? id : '(\d+)'}\].+?\]/i)
when :attachment
Regexp.new(%r{\[ATTACH(?>=\w+)?\]#{id ? id : '(\d+)'}\[/ATTACH\]}i)
end
end
def get_xf_sql(type, id)
case type
when :gallery
<<-SQL
SELECT m.media_id, m.media_title, a.attachment_id, a.data_id, d.filename, d.file_hash, d.user_id
FROM xengallery_media AS m
INNER JOIN #{TABLE_PREFIX}attachment a ON (m.attachment_id = a.attachment_id AND a.content_type = 'xengallery_media')
INNER JOIN #{TABLE_PREFIX}attachment_data d ON a.data_id = d.data_id
WHERE media_id = #{id}
SQL
when :attachment
<<-SQL
SELECT a.attachment_id, a.data_id, d.filename, d.file_hash, d.user_id
FROM #{TABLE_PREFIX}attachment AS a
INNER JOIN #{TABLE_PREFIX}attachment_data d ON a.data_id = d.data_id
WHERE attachment_id = #{id}
AND content_type = 'post'
SQL
end
end
def mysql_query(sql)
@client.query(sql, cache_rows: false)
end
end
ImportScripts::XenForo.new.perform
4 个赞
Discourse 团队的某位成员，请合并此代码。
谢谢。
您必须使用 service mariadb start 来启动 mariadb。
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我尝试重写以使 xenforo 的链接不再无法使用，结果如下。
为了编写永久重写，我使用了以下帮助：Set up Let’s Encrypt with multiple domains / redirects 以及 @pfaffman 的帮助
hooks:
...
after_ssl:
- replace:
filename: "/etc/nginx/conf.d/discourse.conf"
from: /#\s*auth_basic_user_file\s*.*;/
to: |
# auth_basic_user_file /etc/nginx/htpasswd;
location /threads/ {
rewrite ^/threads/(.*)\.\d+/?$ /t/$1 permanent;
}
您是否有一个 XenForo 插件，可以让您的网址看起来不像 threads/#{m[\"topic_id\"]}？
您真正想（或曾经想）做的是修改这个：
来创建包含您的 slug（如果这是您有的）而不是（或者也许是除了）XenForo topic_id 的永久链接。
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抱歉，我现在无法完全理解您的意思，xenforo 的网址看起来像这样：
https://TDL/threads/THREADNAME.THREADID
然后我让重写将其转发到 discourse 的网址：
https://TDL/t/THREADNAME
我现在已经尝试了十几个链接，并且它们一直都能正常工作。
我不明白映射部分，它有什么作用？
我感兴趣的是在其他网站上发布的链接，当访客现在来到论坛时不会显示 404。
在导入时，我还不完全理解为什么从第三级开始的类别会被转换为标签，而不是创建更多的子类别？
如果传入的链接中包含 thread id，那么您只需要修复 permalink_normalization 设置。
Discourse 只有两个级别的类别（实际上现在也只是差不多是这样），因此脚本使用标签来表示子子类别。
但是导入的ID与之前的ID不同
如果您尝试 /threads/OLD-THREAD-ID，您将进入正确的帖子。
如果您查看 /admin/customize/permalinks，您会看到所有帖子都有一个重定向到正确帖子的永久链接。但因为我理解您说您旧的URL中没有帖子ID，所以我帮助您解决了您想要的问题，而不是正确的问题。
总之，您已经得到了您想要的解决方案。
那么我得再看看了，因为它一开始确实没怎么起作用。
感谢您的解释。
这相当令人困惑，尤其是弄清楚 permalink_normalization 尤其难以理解。
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如果我进行第二次导入，导入的是增量数据还是会复制线程？
如果您再次运行脚本，它将仅导入尚未导入的内容。如果您有一个包含新用户和帖子的较新数据库，这将非常有用。如果您修改了脚本，使其在导入用户和帖子时执行不同的操作，则意味着您需要清除所有内容并从一个空站点开始。
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在增量导入期间发生了以下错误：
正在导入私信...
找不到主题 ID 0，跳过帖子 1/24
1 / 120735 ( 0.0%) [250209 项/分钟] 找不到主题 ID 0，跳过帖子 2/3
...
5800 / 120735 ( 4.8%) [38592 项/分钟] 找不到主题 ID 0，跳过帖子 5854/1822
5801 / 120735 ( 4.8%) [38598 项/分钟] /var/www/discourse/vendor/bundle/ruby/3.3.0/gems/php_serialize-1.2/lib/php_serialize.rb:315:in `do_unserialize': 无法反序列化类型 '{' (TypeError)
raise TypeError, \"Unable to unserialize type '#{type}'\"
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
from /var/www/discourse/vendor/bundle/ruby/3.3.0/gems/php_serialize-1.2/lib/php_serialize.rb:214:in `unserialize'
from script/import_scripts/xenforo.rb:350:in `block (2 levels) in import_private_messages'
from /var/www/discourse/script/import_scripts/base.rb:548:in `block in create_posts'
from /var/www/discourse/vendor/bundle/ruby/3.3.0/gems/rack-mini-profiler-3.3.1/lib/patches/db/mysql2/alias_method.rb:8:in `each'
from /var/www/discourse/vendor/bundle/ruby/3.3.0/gems/rack-mini-profiler-3.3.1/lib/patches/db/mysql2/alias_method.rb:8:in `each'
from /var/www/discourse/script/import_scripts/base.rb:547:in `create_posts'
from script/import_scripts/xenforo.rb:326:in `block in import_private_messages'
from /var/www/discourse/script/import_scripts/base.rb:948:in `block in batches'
from
from /var/www/discourse/script/import_scripts/base.rb:947:in `batches'
from script/import_scripts/xenforo.rb:315:in `import_private_messages'
from script/import_scripts/xenforo.rb:46:in `execute'
from /var/www/discourse/script/import_scripts/base.rb:47:in `perform'
from script/import_scripts/xenforo.rb:559:in `<main>'
root@rpgforen-app:/var/www/discourse#