ربما هذا سؤال في StackOverflow ولا أفهم ما يفعله gsub، لكن هذا يبدو كسلوك غريب في Ruby أتساءل عما إذا كان قد يكون مرتبطًا بصورة Ruby. أحصل على نفس النتائج في irb على جهازي المحلي.
ظننت أن هذا قد يكون سلوكًا لـ dup لم أفهمه، لكنني أستطيع تكرار السلوك إذا عرفت السلسلة مرتين. في المرة الأولى يفشل gsub في إدراج الرابط، لكن التكرارات اللاحقة لنفس البيانات تتضمنه كما أتوقع.
[1] pry(main)> save=%(<p>On Android, click the three-dot icon in the upper right corner and select Relations from the popup menu. This function wasn't working for me u
ntil yesterday, so perhaps on Android, it's still in A/B testing. <UPL-IMAGE-PREVIEW url="https://somehost.s3.eu-central-1.amazonaws.com/2021-08-29/1630236738-85
280-screen-shot-2021-08-29-at-83023-pm.png">[upl-image-preview url=https://somehost.s3.eu-central-1.amazonaws.com/2021-08-29/1630236738-85280-screen-shot-2021-08
-29-at-83023-pm.png]</UPL-IMAGE-PREVIEW></p>
[1] pry(main)* </r>
[1] pry(main)* )
=> "<p>On Android, click the three-dot icon in the upper right corner and select Relations from the popup menu. This function wasn't working for me until yesterday, so
perhaps on Android, it's still in A/B testing. <UPL-IMAGE-PREVIEW url=\"https://somehost.s3.eu-central-1.amazonaws.com/2021-08-29/1630236738-85280-screen-shot-2
021-08-29-at-83023-pm.png\">[upl-image-preview url=https://somehost.s3.eu-central-1.amazonaws.com/2021-08-29/1630236738-85280-screen-shot-2021-08-29-at-83023-pm.
png]</UPL-IMAGE-PREVIEW></p>\n</r>\n"
[2] pry(main)> s=save.dup
=> "<p>On Android, click the three-dot icon in the upper right corner and select Relations from the popup menu. This function wasn't working for me until yesterday, so
perhaps on Android, it's still in A/B testing. <UPL-IMAGE-PREVIEW url=\"https://somehost.s3.eu-central-1.amazonaws.com/2021-08-29/1630236738-85280-screen-shot-2
021-08-29-at-83023-pm.png\">[upl-image-preview url=https://somehost.s3.eu-central-1.amazonaws.com/2021-08-29/1630236738-85280-screen-shot-2021-08-29-at-83023-pm.
png]</UPL-IMAGE-PREVIEW></p>\n</r>\n"
[3] pry(main)> s.gsub!(/<UPL-IMAGE-PREVIEW url="(.+?)">.+?<\/UPL-IMAGE-PREVIEW>/i,"\nIMAGEISHERE\n#{$1}\n")
=> "<p>On Android, click the three-dot icon in the upper right corner and select Relations from the popup menu. This function wasn't working for me until yesterday, so
perhaps on Android, it's still in A/B testing. \nIMAGEISHERE\n\n</p>\n</r>\n"
[4] pry(main)> s=save.dup
=> "<p>On Android, click the three-dot icon in the upper right corner and select Relations from the popup menu. This function wasn't working for me until yesterday, so perhaps on Android, it's still in A/B testing. <UPL-IMAGE-PREVIEW url=\"https://somehost.s3.eu-central-1.amazonaws.com/2021-08-29/1630236738-85280-screen-shot-2021-08-29-at-83023-pm.png\">[upl-image-preview url=https://somehost.s3.eu-central-1.amazonaws.com/2021-08-29/1630236738-85280-screen-shot-2021-08-29-at-83023-pm.png]</UPL-IMAGE-PREVIEW></p>\n</r>\n"
[5] pry(main)> s.gsub!(/<UPL-IMAGE-PREVIEW url="(.+?)">.+?<\/UPL-IMAGE-PREVIEW>/i,"\nIMAGEISHERE\n#{$1}\n")
=> "<p>On Android, click the three-dot icon in the upper right corner and select Relations from the popup menu. This function wasn't working for me until yesterday, so perhaps on Android, it's still in A/B testing. \nIMAGEISHERE\nhttps://somehost.s3.eu-central-1.amazonaws.com/2021-08-29/1630236738-85280-screen-shot-2021-08-29-at-83023-pm.png\n</p>\n</r>\n"
التكرارات اللاحقة لـ
s=save.dup
s.gsub!(/<UPL-IMAGE-PREVIEW url="(.+?)">.+?<\/UPL-IMAGE-PREVIEW>/i,"\nIMAGEISHERE\n#{$1}\n")
تنتج استبدال الرابط كما أتوقع.
تعمل كما هو متوقع.
كان لدي مشكلة مشابهة اليوم السابق والتي وصفتها في هذا المنشور، ولكن في تعديل سابق. كان الكود هو
def fix_slack_posts
SiteSetting.min_post_length = 2
reg=/(\*\*)(This topic was automatically generated from Slack. You can find the original thread \[here\].+?\))(\*\*\.)?\s*?([a-zA-Z, ()]* : )(.*)/m
preg = /([a-zA-Z, ()]+? : )(.*)/m
topic_posts = Post.where("raw like '**This topic was automatically%'")
topic_posts.each do |tpost|
begin
tpost.raw.gsub!(reg,"#{$5}\n\n#{$2}.")
tpost.save!
tpost.rebake!
rescue
puts "Can't update topic post #{tpost.raw}"
end
posts = Post.where(topic_id: tpost.topic_id).where("post_number > 1")
posts.each do |post|
if post.raw.gsub(preg,"#{$2}").length>=10
begin
post.raw.gsub!(preg,"#{$2}")
post.save!
post.rebake!
rescue
puts "#{post.id}--cannot save #{post.raw}. "
end
end
end
end
SiteSetting.min_post_length = 10
end
وما كان يحدث هو أن tpost.raw في التكرار الثاني للحلقة كان يأخذ قيمة آخر post.raw في التكرار السابق.
ظننت أنني سأجن، لكنني رأيت هذا
