Update several data simultaneously in a database

Question

Hello all,
Who can help me on this : I am trying to update simultaneously all data returned with a simple cfoutput query, where all form tags are indexed with all the id(s) returned by the query (same serie of input/textarea/etc. for each id, but only one single validation button for all id). I am stuck and cannot find a way to do this. Would someone have a simple example of how I could proceed ? That would save my life...
Thanks
Jean

Answer 1

I've done that a few times.  I just found one of the pages and the logic for updates went like this.  By the way, my form is like yours, where the record id is at the end of the form field name.
First, I ran a query against the database to get exisitng values.
Then, I created a ColdFusion query called formdata.  Then I populate this by looping through the form fields.  Something like this:
<cfloop list="#form.fieldnames#" index="ThisField">
<cfif left(thisfield, 9) is "newrecord" and len(form[thisfield]) gt 0>
code for new records
<cfelseif left(thisfield, 4) is "name">
<cfscript>
ThisCode = RemoveChars(ThisField, 1, 4);
if (len(form[thisfield]) gt 0 ) {  // possible update
// handle commas in the text
ThisValue = replace(form[thisfield], ",", "|^|", "all");
// addNewRow is a udf I wrote that combine QueryAddRow and QuerySetCell
x= addNewRow(formdata,"id,f_organism","#Thiscode#,#ThisValue#");
x = QuerySetCell(formdata,"f_organism", Replace(ThisValue, "|^|", ",", "all"));
else { // delete
DeleteList = ListAppend(DeleteList, ThisCode);
</cfscript>
Then I do a query of queries to identify the records to update.
<cfquery name="RecordsToUpdate" dbtype="query">
select id, f_organism
from formdata, existingdata
where id = organism_id
and f_organism <> organism
</cfquery>
and update them like this:
<cfloop query="RecordsToUpdate">
<cfquery name="update" datasource="infograms">
update organism
set organism = <cfqueryparam cfsqltype="cf_sql_varchar" value="#f_organism#">
where organism_id = <cfqueryparam cfsqltype="cf_sql_char" value="#id#">
</cfquery>
</cfloop>
Then I do my deletions.