Регулярно требуется преобразовать какой-либо текст в максимально совместимый текст для URL, имени файла, имени объекта в каком-то софте и тд. Требования совместимости простые: в тексте должны быть только допустимые символы. Обычно это a-z, 0-9 и "_" или "-". То есть, только прописные буквы латинского алфавита и цифры (как пример).
Допустим, нам нужно название статьи в блоге преобразовать в slug для добавления его в URL этой статьи. Как это лучше всего сделать?
В Django по умолчанию есть готовая функция slugify для таких случаев.
Но я её никогда не использую. Почему? Потому что её недостаточно!
Приведём пример
>>> from django.utils.text import slugify
>>> slugify('This is a Title')
'this-is-a-title'
Пока всё отлично
>>> slugify('This is a "Title!"')
'this-is-a-title'
Спец символы удалились, всё хорошо.
>>> slugify('Это заголовок статьи')
''
Вот и приехали 😢. Если текст не английский то буквы просто игнорируются. Можно это поправить
>>> slugify('Это заголовок статьи', allow_unicode=True)
'это-заголовок-статьи'
Но тогда мы не вписываемся в условие. У нас появилась кириллица в тексте.
Так как я часто пишу сайты для русскоязычных пользователей эта проблема весьма актуальна. Я не использую стандартную функцию и всегда пишу свою.
Оригинал я не беру в расчёт и пишу полностью свою функцию. И так, по порядку:
🔸1. Исходный текст:
>>> text = 'Мой заголовок №10 😁!'
Взял специально посложней со специальными символами.
🔸2. Транслит
Необходимо сделать транслит всех символов в латиницу. Здесь очень выручает библиотека unidecode. Помимо простого транслита кириллицы в латиницу она умеет преобразовывать спец символы и иероглифы в текстовые аналоги.
from unidecode import unidecode
>>> unidecode("Ñ Σ ® µ ¶ ¼ 月 山")
'N S (r) u P 1/4 Yue Shan'
Очень крутая библиотека, советую👍
В нашем случае получаем такое преобразование:
>>> text = unidecode(text)
>>> print(text)
'Moi zagolovok No. 10 !'
Отличный транслит. Смайл просто удалился, хотя я ждал что-то вроде :). Ну и ладно, всë равно невалидные символы.
А еще наш код уже поддерживает любой язык, будь то хинди или корейский.
🔸4. Фильтр символов
Unidecode не занимается фильтрацией по недопустимым символам. Это мы делаем в следующем шаге через regex. Просто заменим все символы на "_" если они вне указанного диапазона.
>>> text = re.sub(r'[^a-zA-Z0-9]+', '_', text)
>>> print(text)
'Moi_zagolovok_No_10_'
Символ "+" в паттерне выручает когда несколько недопустимых символов идут рядом. Все они заменяются на один символ "_".
🔸5. Slugify
Осталось удалить лишние символы по краям и сделать нижний регистр
>>> text = text.strip('_').lower()
>>> print(text)
'moi_zagolovok_no_10'
Получаем отличный slug! 😎
🌎 Полный код в виде функции.
______________
PS. Проверку что в строке остался хоть один допустимый символ я бы вынес в отдельную функцию.
#libs#tricks#django
🎉Slex is Your Bridge to Trade Commodities! 🚀
This year, the spotlight is on the thrilling world of asset tokenization - a trend redefining the financial landscape!
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#SlexExchange#commodities#CryptoTrading
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📢Nelore Coin (NLC/USDT) Listing on SLEX Centralized Exchange🚀
🎉Nelore Coin (NLC) will soon be available for trading against USDT on the SLEX Centralized Exchange!📈
💥This addition will offer traders the opportunity to engage in NLC/USDT transactions on the spot market or employ various investment strategies such as DCA, HODL, or Diversification of Nelore Coin for long-term benefits on the SLEX platform📈
🤝Further information regarding Nelore Coin's listing and trading protocols will be announced by SLEX Exchange shortly. Stay tuned for updates from SLEX Centralized Exchange, and prepare for some thrilling trading experiences ahead!🗓
#SLEXExchange#NeloreCoinListing#CryptoTrading
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📢LanaCoin (LANA/USDT) Listing on SLEXExchange🚀
🎉LanaCoin (LANA) will soon be available for trading against USDT on the SLEX Centralized Exchange!
🌐This addition will empower traders to execute LANA/USDT trades on the spot market or use various investment strategies like DCA, HODL or Diversification of LanaCoin for long-term rewards on the SLEX platform📈
🤝More details regarding LanaCoin's listing and trading procedures will be shared by SLEX Exchange in due course.
📅Keep an eye out for updates from SLEX Centralized Exchange, and gear up for some exciting trading times ahead!
#SLEXExchange#LanaCoinListing#CryptoTrading
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📢Peercoin (PPC/USDC) Listing Announcement on SLEX Centralized Exchange🚀
🎉Peercoin (PPC) will be available for trading against USDC on the SLEX Centralized Exchange. This listing will give you an opportunity to trade PPC\USDC on the spot market, or HODL Peercoin for Long-Term Investment on SLEX Exchange📈
🤝SLEX will give more details about listing and trade Peercoin soon. Stay tuned for updates from SLEX Centralized Exchange and happy trading!
#SLEXExchange#PeercoinListing#CryptoTrading
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📢 Final Peercoin AMA Session Date! 📢
🗣It was a few long days fighting for AMA at X, but due to unforeseen issues the Twitter team is not able to solve, our AMA session with Peercoin is now moving to Telegram!🚀
📅Date: Friday, 03.11.2023;
⏰Time: 14:00 CET.
🔗Make sure to join us there and bring all your questions about Peercoin! This is an opportunity you should not miss. See you on SLEX Telegram this Friday!
#SLEXExchange#PeercoinAMA#CryptoCommunity
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🚀 Bitcoin Surpasses $40k and it's only beginning! 📈
🌪️The crypto world is buzzing with excitement as Bitcoin breaks through the $40k barrier, signaling a potential bull run soon. It's a time of exhilarating market movements and boundless opportunities!
🎉 During this market explosion, we have some thrilling news about the SLEX Coin listing. This is a moment you won't want to miss!
💰As the market heats up, there's no better place for trading than SLEX Exchange. Let’s ride the wave of this bullish trend together and make the most of what's coming!
#BullRun#SLEXCoinListing#CryptoNews#SLEXExchange
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🌐Exciting News: SLEX Platform Plans to join CMC!🎉
📊The SLEX platform is actively working towards securing a listing on CoinMarketCap (CMC) – one of the most reputable and widely recognized cryptocurrency data platforms in the world!❤️
📈The SLEX team's commitment to transparency, reliability, and innovation has always been at the forefront of everything we do. Listing on CMC is a testament to our dedication and a crucial step towards providing our users and partners with even greater visibility and accessibility in the crypto industry🤖
📃 We’ve already applied for a listing on CMC and you can check out our application #853546 📥
🤝The best way to show your trust and faith is to join us and trade on the spot market with zero fee on SLEX platform:slex.io/registration
#SLEXExchange#CoinMarketCap#CryptoListing#cryptotrading
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🚀Join Us at Token2049 – Let's Connect and Engage!🌐
🎉The Token2049, one of the most eagerly anticipated blockchain and crypto events of the year, has begun! The SLEX team is thrilled to extend a warm invitation to you to join us in this exciting journey🌟
✨The SLEX platform is ready to provide exceptionally favorable conditions for listing your project, which includes:
🟩Liquidity Support and Global Promotion;
🟦Integration with Slavi Wallet and Fiat Pairing;
🟩 Personalized Guidance and Rapid Listing;
🟦CMC and Coingecko Assistance;
🟩Vibrant User Base and Market-Making Services.
🤝Let's connect, discuss, and explore how together we can propel your crypto venture to new heights. Fill outthe application form and we will contact you: surl.li/lbxas
👥See you at Token2049!🗓
#Token2049#CryptoCommunity#SLEXExchange#ListingOnSLEX
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🌐Exciting Announcement: SLEX Exchange is Listed on CoinPaprika!🎉
📊We're thrilled to share that SLEX is listed on CoinPaprika – a renowned and trusted crypto data aggregator!❤️
📈Upholding our values of transparency, dependability, and forward-thinking, we see this listing as a testament to our commitment. Joining CoinPaprika is not just a milestone for us, but a significant move to enhance the experience for our users and partners in the crypto ecosystem🚀
🤝Join SLEX Exchange to trade on the spot market with absolute safe. Your trust drives us! Join now:slex.io/registration
#SLEXExchange#CoinPaprika#CryptoListing#cryptotrading
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🚀New Listing on SLEX: Welcome 1Inch!📈
✨We're happy to announce that 1Inch (1INCH\USDC & 1INCH\USDT) is now listed on the SLEX platform! Take advantage of trading 1INCH against USDC and USDT on the spot market starting today.
📊Whether you're planning to HODL or incorporate 1Inch into your diversified portfolio, SLEX offers you the perfect opportunity. Employ strategies like Dollar-Cost Averaging (DCA), long-term holding, or diversification to optimize your investment.
🌟Join SLEX Centralized Exchange, trade 1INCH/USDC & 1INCH\USDT on spot market and boost your earnings🌐
#SLEXExchange#1InchListing#SpotMarket#CryptoInvestment
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🔒SLEX Rewards Form Now Closed - Thank You for Participating! 🌟
Dear SLEX Community,
🎉We're thrilled to announce that our SLEX rewards form is closed! Thank you to everyone who participated and shared in this exciting opportunity. You will receive your SLEX coins just after the official listing🚀
🎁Stay tuned for more updates and prepare to trade SLEX coins on SLEX Exchange!
#SLEX#SLEXExchange#SLEXRewards#SLEXContest#SLEXCoin
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Breaking Barriers: #SLEXExchange Sets the Stage for a Revolutionary Trading Experience with New Features!📌
SLEX Exchange is an advanced platform designed to open for crypto traders new features others didn't offer. It offers a wide range of trading features that allow users to make successful transactions in the world of digital assets.
👉🏻 Read the details here: https://t.ly/oqTI
Don’t forget to register on slex.io and subscribe to social media for not missing interesting news!
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#TradingFunctions#DigitalAssets#TradingExperience#SlexCommunity