Comments on: changing cfgrid pageSize dynamically

By: Anuj Gakhar

Anuj Gakhar — Mon, 09 Nov 2009 10:16:18 +0000

Hi Stu,
I would imagine you would have to play around with this line of code
ds.reload({params:{start:0,limit:numRows}});

if you give a start of 5 if the pageSize is 5, that would be page 2.

By: stu

stu — Thu, 05 Nov 2009 23:08:05 +0000

Also add to the above be able to page back and forward from page 2

By: stu

stu — Thu, 05 Nov 2009 22:36:59 +0000

Hi is it possible to pass the page into the grid to force it to display page 2 in certain instances

By: Nick D

Nick D — Tue, 31 Mar 2009 21:39:11 +0000

If you assign x = QueryConvertForGrid(qGetArtists, page, ps) to a variable it returns a struct with a key of QUERY. Do all your normal processing until you are on the last page. Now x is a structure with 2 keys QUERY and TOALROWCOUNT. When you are on the last page loop thru X.QUERY (I assume you have a column key, in this case its ARTISTID) and check for an empty string on your column key. If it is empty do not add it to the new query MYNEWQUERY. Once you have created this new query just assign it back to X.QUERY = mynewQuery

By: Nick D

Nick D — Tue, 31 Mar 2009 21:32:07 +0000

cffunction name=”getArtists” access=”remote” output=”false” returntype=”any”
cfargument name=”page”
cfargument name=”pageSize”
cfargument name=”gridsortcolumn”
cfargument name=”gridsortdirection”
cfset var ps = pageSize
cfset var qGetArtists = “”

cfquery name=”qGetArtists” datasource=”#this.dsn#”
SELECT *
FROM Artists
cfif gridsortcolumn neq “” or gridsortdirection neq “”
order by #gridsortcolumn# #gridsortdirection#
/cfif
cfquery

cfset totalPages = Ceiling(qGetArtists.RecordCount/pageSize)

cfif page EQ totalpages
cfset x = QueryConvertForGrid(qGetArtists,page, ps)

cfset myNewQuery = querynew(“ADDRESS,ARTISTID,CITY,EMAIL,FAX,FIRSTNAME,LASTNAME,PHONE,POSTALCODE,STATE,THEPASSWORD “)
cfloop query=”x.QUERY”
cfif x.QUERY.ARTISTID neq “”
cfset queryaddrow(myNewQuery)
cfset querysetcell(myNewQuery,’ADDRESS’,x.QUERY.ADDRESS)
cfset querysetcell(myNewQuery,’ARTISTID’,x.QUERY.ARTISTID)
cfset querysetcell(myNewQuery,’CITY’,x.QUERY.CITY)
cfset querysetcell(myNewQuery,’EMAIL’,x.QUERY.EMAIL)
cfset querysetcell(myNewQuery,’FAX’,x.QUERY.FAX)
cfset querysetcell(myNewQuery,’FIRSTNAME’,x.QUERY.FIRSTNAME)
cfset querysetcell(myNewQuery,’LASTNAME’,x.QUERY.LASTNAME)
cfset querysetcell(myNewQuery,’PHONE’,x.QUERY.PHONE)
cfset querysetcell(myNewQuery,’POSTALCODE’,x.QUERY.POSTALCODE)
cfset querysetcell(myNewQuery,’STATE’,x.QUERY.STATE)
cfset querysetcell(myNewQuery,’THEPASSWORD’,x.QUERY.THEPASSWORD)
/cfif
/cfloop
cfset x.QUERY =myNewQuery
cfelse
cfset x = QueryConvertForGrid(qGetArtists, page, ps)
/cfif

cfreturn x
cffunction

By: Nick D

Nick D — Tue, 31 Mar 2009 21:29:46 +0000

The solution is really simple here is the code that keeps the last records at the end. SELECT * FROM Artists order by #gridsortcolumn# #gridsortdirection#

By: Juan

Juan — Thu, 05 Mar 2009 21:43:42 +0000

cfset calPageSize = getEmployees.RecordCount / arguments.page
cfif calPageSize LT ps
cfset dif= page * (ps – calPageSize )
cfset ps = Round(ps – dif)
cfif

Remenber the brackets!

By: Juan

Juan — Thu, 05 Mar 2009 21:39:54 +0000

That eliminate the blanks rows at the last page.

By: Brian

Brian — Fri, 09 Jan 2009 17:46:16 +0000

Although I still get the extra blank rows on the last page for multipage grids. Adjusting pagesize to be returned in the CFC causes errors in what data is displayed because of how pagesize is used on the return. Still would like to see a fix for this.

By: Brian

Brian — Fri, 09 Jan 2009 01:23:46 +0000

I revisited this again and now it works. The key changes I hade to make was:
1) paging.pageSize = parseInt(numRows);
which I somehow missed previously
2) ColdFusion.Grid.refresh(strGrid, false)
Without the ‘false’ value, changes in the grid could display incorrect paging results.