I'm trying to set a cookie containing some JSON data, but I also need to preserve line breaks. I've got a way of keeping them and rendering them which works fine in the console but when I actually put the code in a tag, it doesn't work.
Here's the code:
actualData = JSON.stringify(data.replaceAll("\n", "|")).replaceAll("\\", "");
document.cookie = `data=${actualData}; path=/;`;
Here's the expected input and output, which is in the console:
//input = '[\n {"content": [\n {"title": "e"}\n ]}\n]'
//output = 'data="[| {"content": [| {"title": "e"}| ]}|]"; path=/;'
Here's the input and output when run from a <script> tag:
//input = '[\n {"content": [\n {"title": "e"}\n ]}\n]'
//output = 'data="[\\n {\\"co|te|t\\": [\\n {\\"title\\": \\"e\\"}\\n ]}\\n]"'
I don't understand how the same code is returning a completely different result. I don't know how it gets even worse when flask handles it:
[n {"content": [n {"title": "e"}n ]}n]
Is it something to do with how cookies are handled? Is it something to do with how I'm outputting it?
you can change your tactic and format the JSON to a string (with the required indentation), then base64 encode the string, store the produced value to the cookie. Then when you receive back the cookie in a subsequent request, you can base64 decode it.
Full example below:
import json
import base64
my_dict = {
"id": "12345",
"name": "myname",
"text": "",
"list_field": [
123,
456,
"some string"
]
}
my_string = json.dumps(my_dict, indent=4)
print(my_string)
my_string_bytes = my_string.encode('ascii')
b64_encoded = base64.b64encode(my_string_bytes)
print(b64_encoded)
b64_decoded = base64.b64decode(b64_encoded)
my_string_decoded = b64_decoded.decode('ascii')
print(my_string_decoded)
if my_string == my_string_decoded:
print("initial and decoded strings match!")
much cleaner approach, and not prone to unintentional character replacements