mirror of
https://github.com/discourse/discourse.git
synced 2024-11-23 22:26:26 +08:00
142571bba0
* `rescue nil` is a really bad pattern to use in our code base. We should rescue errors that we expect the code to throw and not rescue everything because we're unsure of what errors the code would throw. This would reduce the amount of pain we face when debugging why something isn't working as expexted. I've been bitten countless of times by errors being swallowed as a result during debugging sessions.
112 lines
2.3 KiB
Ruby
112 lines
2.3 KiB
Ruby
class Permalink < ActiveRecord::Base
|
|
belongs_to :topic
|
|
belongs_to :post
|
|
belongs_to :category
|
|
|
|
before_validation :normalize_url
|
|
|
|
class Normalizer
|
|
attr_reader :source
|
|
|
|
def initialize(source)
|
|
@source = source
|
|
if source.present?
|
|
@rules = source.split("|").map do |rule|
|
|
parse_rule(rule)
|
|
end.compact
|
|
end
|
|
end
|
|
|
|
def parse_rule(rule)
|
|
return unless rule =~ /\/.*\//
|
|
|
|
escaping = false
|
|
regex = ""
|
|
sub = ""
|
|
c = 0
|
|
|
|
rule.chars.each do |l|
|
|
c += 1 if !escaping && l == "/"
|
|
escaping = l == "\\"
|
|
|
|
if c > 1
|
|
sub << l
|
|
else
|
|
regex << l
|
|
end
|
|
end
|
|
|
|
if regex.length > 1
|
|
[Regexp.new(regex[1..-1]), sub[1..-1] || ""]
|
|
end
|
|
|
|
end
|
|
|
|
def normalize(url)
|
|
return url unless @rules
|
|
@rules.each do |(regex, sub)|
|
|
url = url.sub(regex, sub)
|
|
end
|
|
|
|
url
|
|
end
|
|
|
|
end
|
|
|
|
def self.normalize_url(url)
|
|
if url
|
|
url = url.strip
|
|
url = url[1..-1] if url[0, 1] == '/'
|
|
end
|
|
|
|
normalizations = SiteSetting.permalink_normalizations
|
|
|
|
@normalizer = Normalizer.new(normalizations) unless @normalizer && @normalizer.source == normalizations
|
|
@normalizer.normalize(url)
|
|
end
|
|
|
|
def self.find_by_url(url)
|
|
find_by(url: normalize_url(url))
|
|
end
|
|
|
|
def normalize_url
|
|
self.url = Permalink.normalize_url(url) if url
|
|
end
|
|
|
|
def target_url
|
|
return external_url if external_url
|
|
return "#{Discourse::base_uri}#{post.url}" if post
|
|
return topic.relative_url if topic
|
|
return category.url if category
|
|
nil
|
|
end
|
|
|
|
def self.filter_by(url = nil)
|
|
permalinks = Permalink
|
|
.includes(:topic, :post, :category)
|
|
.order('permalinks.created_at desc')
|
|
|
|
permalinks.where!('url ILIKE :url OR external_url ILIKE :url', url: "%#{url}%") if url.present?
|
|
permalinks.limit!(100)
|
|
permalinks.to_a
|
|
end
|
|
end
|
|
|
|
# == Schema Information
|
|
#
|
|
# Table name: permalinks
|
|
#
|
|
# id :integer not null, primary key
|
|
# url :string(1000) not null
|
|
# topic_id :integer
|
|
# post_id :integer
|
|
# category_id :integer
|
|
# created_at :datetime not null
|
|
# updated_at :datetime not null
|
|
# external_url :string(1000)
|
|
#
|
|
# Indexes
|
|
#
|
|
# index_permalinks_on_url (url) UNIQUE
|
|
#
|