How could we get the months between the start date and end date

RE: How could we get the months between the start date and end date

vinod alla — Wed, 23 Aug 2017 02:50:11 GMT

Thank you Suresh and Ramesh

RE: How could we get the months between the start date and end date

sureshg57 — Tue, 22 Aug 2017 16:07:26 GMT

Hi Vinod,

You can use below code to achieve the functionality you are after. If you want to use it to a project please add validation to it as I have not done any.

load(
  local!monthNUmber:{1,2,3,4,5,6,7,8,9,10,11,12},
  local!monthName:{"Jan","Feb","Mar","Apr","May","Jun","Jul","Aug","Sep","Oct","Nov","Dec"},
with(
   local!years:year(ri!todate)-year(ri!fromDate),
   local!months:(local!years)*12 + month(ri!todate)-month(ri!fromdate)+1, /*Derive number of months in between two dates */
   local!enumArray: rdrop(1 + enumerate(local!months),1),  /*derive the array to iretare through*/
   local!thisYear: year(ri!fromdate),
   local!thisMonth: month(ri!fromdate),
   local!thisMonthYear: fn!displayvalue(local!thisMonth,{local!monthNUmber},{local!monthName},"") & "-" &right(local!thisYear,2), /*Get first month year */

   append({local!thisMonthYear},
       apply(rule!TEST_appendYearMonth,local!enumArray,local!monthNUmber,local!monthName,ri!fromdate)      
    ) /*generate list of month year*/
 )
)

rule called in apply has below structure and code in it. Just fiddle around if need to change the order how the Month-year should appear
rule!TEST_appendYearMonth(int arrayInstance,int array monthNumList, text array monthNameList, date fromDate)

fn!displayvalue(month(usereomonth(ri!fromDate,ri!arrayInstance)),ri!monthNumList,ri!monthNameList,"") 
       &"-"&
right(year(usereomonth(ri!fromDate,ri!arrayInstance)),2)

Regards

Suresh

RE: How could we get the months between the start date and end date

Ram — Thu, 17 Aug 2017 03:37:25 GMT

Hi Vinod,

As per your requirement I have modified the code and pasted below.

with(
local!fromMonth: month(
ri!fromDatetime
),
local!toMonth: month(
ri!toDatetime
),
local!fromYear: year(
ri!fromDatetime
),
local!toYear: year(
ri!toDatetime
),
if(
and(
local!fromYear = local!toYear,
local!fromMonth > local!toMonth
),
"From date should be less than to date",
if(
local!fromYear > local!toYear,
"From date should be less than to date",
if(
local!fromYear = local!toYear,
fn!apply(
append(
_,
"-" & right(
local!fromYear,
2
)
),
{
difference(
{
fn!apply(
fn!displayvalue(
_,
{
1,
2,
3,
4,
5,
6,
7,
8,
9,
10,
11,
12
},
{
"Jan",
"Feb",
"Mar",
"Apr",
"May",
"Jun",
"Jul",
"Aug",
"Sep",
"Oct",
"Nov",
"Dec"
},
null
),
{
enumerate(
local!toMonth + 1 - local!fromMonth
) + local!fromMonth
}
)
},
{
null
}
)
}
),
if(
local!toYear - local!fromYear = 1,
append(
fn!apply(
append(
_,
"-" & right(
local!fromYear,
2
)
),
{
difference(
{
fn!apply(
fn!displayvalue(
_,
{
1,
2,
3,
4,
5,
6,
7,
8,
9,
10,
11,
12
},
{
"Jan",
"Feb",
"Mar",
"Apr",
"May",
"Jun",
"Jul",
"Aug",
"Sep",
"Oct",
"Nov",
"Dec"
},
null
),
{
enumerate(
12
) + local!fromMonth
}
)
},
{
null
}
)
}
),
fn!apply(
append(
_,
"-" & right(
local!toYear,
2
)
),
{
difference(
{
fn!apply(
fn!displayvalue(
_,
{
1,
2,
3,
4,
5,
6,
7,
8,
9,
10,
11,
12
},
{
"Jan",
"Feb",
"Mar",
"Apr",
"May",
"Jun",
"Jul",
"Aug",
"Sep",
"Oct",
"Nov",
"Dec"
},
null
),
{
enumerate(
local!toMonth
) + 1
}
)
},
{
null
}
)
}
)
),
if(
local!toYear - local!fromYear > 1,
append(
fn!apply(
append(
_,
"-" & right(
local!fromYear,
2
)
),
{
difference(
{
fn!apply(
fn!displayvalue(
_,
{
1,
2,
3,
4,
5,
6,
7,
8,
9,
10,
11,
12
},
{
"Jan",
"Feb",
"Mar",
"Apr",
"May",
"Jun",
"Jul",
"Aug",
"Sep",
"Oct",
"Nov",
"Dec"
},
null
),
{
enumerate(
12
) + local!fromMonth
}
)
},
{
null
}
)
}
),
fn!apply(
rule!getAllMonthsInAYear(
_
),
enumerate(
(
local!toYear - local!fromYear
) - 1
) + local!fromYear + 1
),
fn!apply(
append(
_,
"-" & right(
local!toYear,
2
)
),
{
difference(
{
fn!apply(
fn!displayvalue(
_,
{
1,
2,
3,
4,
5,
6,
7,
8,
9,
10,
11,
12
},
{
"Jan",
"Feb",
"Mar",
"Apr",
"May",
"Jun",
"Jul",
"Aug",
"Sep",
"Oct",
"Nov",
"Dec"
},
null
),
{
enumerate(
local!toMonth
) + 1
}
)
},
{
null
}
)
}
)
),
null
)
)
)
)
)
)

I haven't applied any date range to the code which might cause performance issue if the difference between two years is huge.

Note:

code used in rule!getAllMonthsInAYear() is
{
"Jan"&"-"&right(ri!year, 2),
"Feb"&"-"&right(ri!year, 2),
"Mar"&"-"&right(ri!year, 2),
"Apr"&"-"&right(ri!year, 2),
"May"&"-"&right(ri!year, 2),
"Jun"&"-"&right(ri!year, 2),
"Jul"&"-"&right(ri!year, 2),
"Aug"&"-"&right(ri!year, 2),
"Sep"&"-"&right(ri!year, 2),
"Oct"&"-"&right(ri!year, 2),
"Nov"&"-"&right(ri!year, 2),
"Dec"&"-"&right(ri!year, 2)
}

Let me know if you face any problems in executing the code.

RE: How could we get the months between the start date and end date

vinod alla — Thu, 17 Aug 2017 01:41:45 GMT

Ramesh,

If the difference between ( local!toYear, local!fromYear )>1 only the boundary year months are displaying.

For example start date Sep - 2015 and To date Feb -2017 , Displaying {Sep-15, Oct -15, Nov-15, Dec-15, Jan-17, Feb-17}

RE: How could we get the months between the start date and end date

Ram — Mon, 14 Aug 2017 18:17:41 GMT

Welcome Vinod

RE: How could we get the months between the start date and end date

vinod alla — Mon, 14 Aug 2017 18:14:37 GMT

Perfect - Ramesh, Now working as expected.

Thank you so much

RE: How could we get the months between the start date and end date

Ram — Mon, 14 Aug 2017 17:55:33 GMT

Hi Vinod,

Try replacing the below code i.e. code at line 11.

fn!apply(append(_, "-"&right(local!fromYear, 2)), {difference({fn!apply(fn!displayvalue(_, cons!TEST_MONTH_NUMBERS, cons!TEST_MONTHS, null), {enumerate(local!toMonth) + local!fromMonth})}, {null})})

with

fn!apply(append(_, "-"&right(local!fromYear, 2)), {difference({fn!apply(fn!displayvalue(_, cons!TEST_MONTH_NUMBERS, cons!TEST_MONTHS, null), {enumerate(local!toMonth + 1 - local!fromMonth) + local!fromMonth})}, {null})}),

Thanks,
Ramesh

RE: How could we get the months between the start date and end date

vinod alla — Mon, 14 Aug 2017 16:46:49 GMT

Thank you so much - Ramesh,
It is working fine if the year is different.
But if year is same( example: start date: 04/04/2017, end Date: 10/04/2017) displaying from Apr-17 to Dec-17.
displaying 3+ months .

RE: How could we get the months between the start date and end date

Ram — Mon, 14 Aug 2017 15:33:37 GMT

Hi Vinod,

Please use the below code snippet in an expression rule which fulfills the above mentioned requirement.

with(
local!fromMonth: month(ri!fromDatetime),
local!toMonth: month(ri!toDatetime),
local!fromYear: year(ri!fromDatetime),
local!toYear: year(ri!toDatetime),
if(and(local!fromYear = local!toYear, local!fromMonth > local!toMonth),
"From date should be less than to date",
if(local!fromYear > local!toYear,
"From date should be less than to date",
if(local!fromYear = local!toYear,
fn!apply(append(_, "-"&right(local!fromYear, 2)), {difference({fn!apply(fn!displayvalue(_, cons!TEST_MONTH_NUMBERS, cons!TEST_MONTHS, null), {enumerate(local!toMonth) + local!fromMonth})}, {null})}),
if(local!fromYear < local!toYear,
append(
fn!apply(append(_, "-"&right(local!fromYear, 2)), {difference({fn!apply(fn!displayvalue(_, cons!TEST_MONTH_NUMBERS, cons!TEST_MONTHS, null), {enumerate(12) + local!fromMonth})}, {null})}),
fn!apply(append(_, "-"&right(local!toYear, 2)), {difference({fn!apply(fn!displayvalue(_, cons!TEST_MONTH_NUMBERS, cons!TEST_MONTHS, null), {enumerate(local!toMonth) + 1})}, {null})})
),
null
)
)
)
)
)

cons!TEST_MONTH_NUMBERS: Contains {1; 2; 3; 4; 5; 6; 7; 8; 9; 10; 11; 12} array.
cons!TEST_MONTHS: Contains {Jan;Feb;Mar;Apr;May;Jun;Jul;Aug;Sep;Oct;Nov;Dec} array

Please let me know if you face any trouble in executing the code snippet

Thanks,
Ramesh

RE: How could we get the months between the start date and end date

andriyr — Mon, 14 Aug 2017 15:14:04 GMT

But shouldn't there be more months between the two dates you listed? Assuming dates are formatted D/M/Y then your example would output something like "Dec. 16", "Jan. 17", ... , "Nov. 17".

RE: How could we get the months between the start date and end date

vinod alla — Mon, 14 Aug 2017 14:51:15 GMT

Raggie - End result should be in the format of( Dec-16, Jan-17, Feb-17)

RE: How could we get the months between the start date and end date

Reggie — Mon, 14 Aug 2017 14:45:14 GMT

For clarification, should the end result be the # of months between start and end date?

OR

Should the end result be in the format of your example (Dec-16, Jan-17, Feb-17) based on each month between start and end date?

RE: How could we get the months between the start date and end date

Alok Patro — Mon, 14 Aug 2017 14:34:12 GMT

as per your example the months should be from December-16 till November-17 ..

Can you please clarify your requirement. and give another example