editable | Fixing contenteditable.

So I am relatively new to programming, and I have been working on this task app, where I want to save the data such as task name and more, given by the user. I am trying to accomplish this using Room. Now, initially, when I tried to do it, the app would crash since I was doing everything on the main thread probably. So, after a little research, I came to AsyncTask, but that is outdated. Now finally I have come across the Executer. I created a class for it, but I am a little unsure as to how I can implement it in my app. This is what I did :

Entity Class :

I have a javascript calendar (FullCalendar v5) up and running in my Rails 6 app and everything works fine except my js.erb files. For example, when deleting a calendar event, the event is correctly deleted from the database and Rails goes correctly to my destroy.js.erb file. But my js.erb file does not recognize the calendar with the code

Getting "AttributeError: 'function' object has no attribute 'get_extra_actions'" error with Django 3.2.4 and djangorestframework 3.12.4

Logs:

I wanted a ArrayFormula at C1 which gives the required result as shown.

Entry sheet:
(Column C is my required column)

Date Entered is the date when the Name is Assigned a group i.e. a, b, c, d, e, f

Criteria:

1. The value of count is purely on basis of Date Entered (if john is assigned a on lowest date(10-Jun) then count value is 1, if rose is assigned a on 2nd lowest date(17-Jun) then count value is 2).
2. The value of count does not change even when the data is sorted in any manner because Date Entered column values is always permanent & does not change.
3. New entry date could be any date not necessarily highest date (If a new entry with name Rydu is assigned a on 9-Jun then the it's count value will become 1, then john's (10-Jun) will become 2 and so on)

Example:

After I sort the data in any random order say like this:

Random ordered sheet:
(Count value remains permanent)

And when I do New entries in between (Row 4th & 14th) and after last row (Row 17th):

Random Ordered sheet:
(Doesn't matter where I do)

1. ={"AF Formula1"; ArrayFormula(IF(B2:B="", "", COUNTIFS(B$2:B, "="&B2:B, D$2:D, <"&D2:D)+1))}
2. ={"AF Formula2";INDEX(IFERROR(1/(1/COUNTIFS(B2:B, B2:B, ROW(B2:B), "<="&ROW(B2:B)))))}

I tried to figure my own ArrayFormula but it's not working:

I got Formula for each cell:
=RANK($D2,FILTER($D$2:$D, $B$2:$B=$B2),1)
I figured out Filter doesn't work with ArrayFormula so I had to take a different approach.

I took help from my previous question answer (Arrayformula at H3) which was similar since in both cases each cell FILTER formula returns more than 1 value. (It was actually answered by player0)

Using the same technique I came up with this Formula which works absolutely fine :

=RANK($D2, ARRAYFORMULA(TRANSPOSE(SPLIT(VLOOKUP($B2, SUBSTITUTE(TRIM(SPLIT(FLATTEN(QUERY(QUERY({$B:$B&"×", $D:$D}, "SELECT MAX(Col2) WHERE Col2 IS NOT NULL GROUP BY Col2 PIVOT Col1", 1),, 9^9)), "×")), " ", ","), 2, 0), ","))), 1)

Now when I tried converting it to ArrayFormula: ($D2 to $D2:$D & $B2 to $B2:$B)

=ARRAYFORMULA(RANK($D2:$D,TRANSPOSE(SPLIT(VLOOKUP($B2:$B, SUBSTITUTE(TRIM(SPLIT(FLATTEN(QUERY(QUERY({$B:$B&"×", $D:$D}, "SELECT MAX(Col2) WHERE Col2 IS NOT NULL GROUP BY Col2 PIVOT Col1", 1),, 9^9)), "×")), " ", ","), 2, 0), ",")), 1))

It gives me an error "Did not find value '' in VLOOKUP evaluation", I figured out that the problem is only in VLOOKUP when I change $B2 to $B2:$B.

I'm sure VLOOKUP works with ArrayFormula, I fail to understand where my formula is going wrong! Please help me correct my ArrayFormula.

Here is the editable sheet link

I have multiple variables like so

I'd like to dynamically update one column value in a table based on the user input in a different column. The user-editable column is quantity, and I'd like to multiply that by a price value (id = 'pmvalue') to display total price (id 'totalpmvalue') as an output.

I don't understand what javascript to use here - I've tried searching for solutions online, but haven't been able to find something that exactly corresponds to my use case (and I'm not experienced enough to understand how to adapt solutions for slightly different use cases). Any tips are greatly appreciated!

Here's my code:

trying to create a function based post api

views.py:

api link is not working. show this error "init() takes 1 positional argument but 2 were given"

Please help me. I am beginner in django

trying to creat blog api model.py:

I want to create an entry on UserExtended model after registering an user on Django default user model.

here is UserExtended model: