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+--- Thread: regex and case insensitive (/thread-28449.html)
regex and case insensitive - Leon79 - Jul-19-2020
Hello Coders,
I have almost solved with my little search bar, just I cannot manage to look for the word with case insensitive, if I write parmesan it finds it, all work normally, if I write ParMeSan it doesn't. Any Idea? I'm reading the documentation but cannot manage to do like it's written there, thank you!
@app.route('/search', methods=["POST"])
def search():
if request.method == "POST":
data = request.form.to_dict()
keyword = str(data['mysearch'])
query={"ingredients": { "$regex": keyword }}
return render_template("search.html", recipes=mongo.db.recipes.find(query))
RE: regex and case insensitive - bowlofred - Jul-19-2020
I don't see what's actually doing the lookup. But if render_template uses python regex engine, you can probably add a
(?i) to the beginning of the regex.>>> re.search("Hi", "what is this?")
>>> re.search("(?i)Hi", "what is this?")
<_sre.SRE_Match object; span=(9, 11), match='hi'>
RE: regex and case insensitive - Leon79 - Jul-19-2020
(Jul-19-2020, 07:57 PM)bowlofred Wrote: I don't see what's actually doing the lookup. But if render_template uses python regex engine, you can probably add a(?i)to the beginning of the regex.
>>> re.search("Hi", "what is this?") >>> re.search("(?i)Hi", "what is this?") <_sre.SRE_Match object; span=(9, 11), match='hi'>
I'm using a form to look for an ingredients, the webpage will show me a page with the result of all the recipes with that ingredients.
@app.route('/search', methods=["POST"])
def search():
if request.method == "POST":
data = request.form.to_dict()
keyword = str(data['mysearch'])
query={"ingredients": { "$regex": keyword }}
return render_template("search.html", recipes=mongo.db.recipes.find(query))This code is in main.py, my code works, the only thing is that I would like it looks for case insensitive, for example if I write parmisan, it gives me many results, but if I write ParMiSan none, because it's looking in case sensitive mode. I just would like to know how to add the option to make it case insensitive.
RE: regex and case insensitive - bowlofred - Jul-19-2020
Did you try what I said above? Add "(?i)" to the front of the regex.
RE: regex and case insensitive - Leon79 - Jul-19-2020
(Jul-19-2020, 08:26 PM)bowlofred Wrote: Did you try what I said above? Add "(?i)" to the front of the regex.
No because I don't know exactly where to put it sorry
RE: regex and case insensitive - bowlofred - Jul-19-2020
I'm assuming it's just keyword. So try instead of your line 5, something like:
keyword = "(?i)" + str(data['mysearch'])
RE: regex and case insensitive - Leon79 - Jul-19-2020
(Jul-19-2020, 08:31 PM)bowlofred Wrote: I'm assuming it's just keyword. So try instead of your line 5, something like:
keyword = "(?i)" + str(data['mysearch'])
no it doesn't work at all on this way, thank you for trying
RE: regex and case insensitive - bowlofred - Jul-19-2020
Can you give an example of what one of your $regex is set to? Looks like mongo can take the perl-style /$regex/i form.
RE: regex and case insensitive - Leon79 - Jul-20-2020
(Jul-19-2020, 08:53 PM)bowlofred Wrote: Can you give an example of what one of your $regex is set to? Looks like mongo can take the perl-style /$regex/i form.
I made it, after checking 2000 websites, none of them was giving me the answer, and the answer was actually the simplest. Just needed to understand the logic of the syntax:
query={"ingredients": { "$regex": keyword, "$options": "i" }}Thank you!