Dinamically calculating based on per week

[erhan_79]

hi there 

i need a dax formula but in power bi , i have an table , that table has two column , one of the column name is "date" and has some dates , and the other column's name is "quantity" , this quantity named column has some quantities , i want to calculate the total quantity for each week of the current month, where a week starts on Monday and ends on Sunday.

Here is my table : 

i want to calculate the total quantity for each week of the current month, where a week starts on Monday and ends on Sunday , as below table . 

[amitchandak]

@erhan_79 , Try a new column like

Month Week =
var _monthweek = (eomonth([Date],-1)+1) -WEEKDAY((eomonth([Date],-1)+1),2)+1 //monday
var _week = [Date] -WEEKDAY([Date],2)+1 //monday
return
QUOTIENT(DATEDIFF(_monthweek,_week,DAY),7)+1

Convert to text then