Re: Problem deleting structure in an array
> That's why I love this list it makes you less dumb. Now that would make a good T-Shirt ;-) "Join CF-Talk (It makes you less dumb)" ~| Want to reach the ColdFusion community with something they want? Let them know on the House of Fusion mailing lists Archive: http://www.houseoffusion.com/groups/cf-talk/message.cfm/messageid:329617 Subscription: http://www.houseoffusion.com/groups/cf-talk/subscribe.cfm Unsubscribe: http://www.houseoffusion.com/cf_lists/unsubscribe.cfm?user=89.70.4
Re: Problem deleting structure in an array
Hello: For those of you following the tread Leigh had the correct solution. When deleting using a loop, delete in reverse or descending order. It makes so much sense, yet in never occurred to me. That's why I love this list it makes you less dumb. Jaime ~| Want to reach the ColdFusion community with something they want? Let them know on the House of Fusion mailing lists Archive: http://www.houseoffusion.com/groups/cf-talk/message.cfm/messageid:329616 Subscription: http://www.houseoffusion.com/groups/cf-talk/subscribe.cfm Unsubscribe: http://www.houseoffusion.com/cf_lists/unsubscribe.cfm?user=89.70.4
Re: Problem deleting structure in an array
Jaime, No problem. I just wanted to make sure you saw the examples, as I think they give a good demonstration of both the issue and resolution. -Leigh ~| Want to reach the ColdFusion community with something they want? Let them know on the House of Fusion mailing lists Archive: http://www.houseoffusion.com/groups/cf-talk/message.cfm/messageid:329615 Subscription: http://www.houseoffusion.com/groups/cf-talk/subscribe.cfm Unsubscribe: http://www.houseoffusion.com/cf_lists/unsubscribe.cfm?user=89.70.4
Re: Problem deleting structure in an array
Yep, Leigh's solution is much simpler. [?] On Tue, Jan 12, 2010 at 9:47 PM, jrmuniz wrote: > > Leigh: My apologies. When I read your post I stopped at the word "Yes" not > realizing there was more. What you are saying makes perfect sense. I'll > give that a try. Jaime > > See my previous response. You must remove the item in _descending_ order. > That way the element you are trying to remove will always exist. > > > > > > ~| Want to reach the ColdFusion community with something they want? Let them know on the House of Fusion mailing lists Archive: http://www.houseoffusion.com/groups/cf-talk/message.cfm/messageid:329614 Subscription: http://www.houseoffusion.com/groups/cf-talk/subscribe.cfm Unsubscribe: http://www.houseoffusion.com/cf_lists/unsubscribe.cfm?user=89.70.4
Re: Problem deleting structure in an array
Leigh: My apologies. When I read your post I stopped at the word "Yes" not realizing there was more. What you are saying makes perfect sense. I'll give that a try. Jaime See my previous response. You must remove the item in _descending_ order. That way the element you are trying to remove will always exist. ~| Want to reach the ColdFusion community with something they want? Let them know on the House of Fusion mailing lists Archive: http://www.houseoffusion.com/groups/cf-talk/message.cfm/messageid:329613 Subscription: http://www.houseoffusion.com/groups/cf-talk/subscribe.cfm Unsubscribe: http://www.houseoffusion.com/cf_lists/unsubscribe.cfm?user=89.70.4
Re: Problem deleting structure in an array
See my previous response. You must remove the item in _descending_ order. That way the element you are trying to remove will always exist. -Leigh ~| Want to reach the ColdFusion community with something they want? Let them know on the House of Fusion mailing lists Archive: http://www.houseoffusion.com/groups/cf-talk/message.cfm/messageid:329612 Subscription: http://www.houseoffusion.com/groups/cf-talk/subscribe.cfm Unsubscribe: http://www.houseoffusion.com/cf_lists/unsubscribe.cfm?user=89.70.4
Re: Problem deleting structure in an array
Chad & Qing Xia: Thanks for your responses. You are both correct. But I still can't figure out how to fix it. Chad: I used cfdump in the loop and what is happening is that the session.shopping array index is decreasing by 1 every time one structure is deleted. Which makes sense. When the index is off it can't find the others. Qing Xia: This statement is correct. "I bet the error happens only if item 3 is selected. If you do 1 and 2 then you'll get the original number 2 remaining in the array." However, I don't understand how this would work: "So maybe you can figure out which array index values are NOT selected for deletion, clear out the original array and insert the un-deleted array elements back in there." I have tried to compensate for that in the loop but nothing works so far. It seems I need to decrease the session.shopping [i] by 1 every time it loops. Or maybe there is another way to accomplish this? I tried the array resize function and did not work. Thanks for any insights. Jaime Chad Gray wrote: My best guess is if you remove one item it changes the structure of the array and when it goes to remove the next one it cannot be found? Use CFDump to display the array as you are looping over it to help debug. This way you can see the way the array is changing as you are removing items. -Original Message- From: jrmuniz [mailto:jrmu...@sfsailing.com] Sent: Tuesday, January 12, 2010 4:16 PM To: cf-talk Subject: Problem deleting structure in an array Hello: Sorry, I forgot the subject in my last post. I'm having an issue deleting a form structure that is in a shopping cart array. I'm sure it's something simple I'm doing wrong, but it's driving me crazy. I have a checkbox to select which items to delete. If only one item is selected there is no error and it works fine. If more than one item is selected then the error is triggered. Strangely, if I resubmit the form after the error it works OK. If I select two items to delete the error is: The error message is " Element at position [3] doesn't exist in array" Here is the form code: Here is the cfc code: Any help is greatly appreciated. Regards, Jaime ~| Want to reach the ColdFusion community with something they want? Let them know on the House of Fusion mailing lists Archive: http://www.houseoffusion.com/groups/cf-talk/message.cfm/messageid:329611 Subscription: http://www.houseoffusion.com/groups/cf-talk/subscribe.cfm Unsubscribe: http://www.houseoffusion.com/cf_lists/unsubscribe.cfm?user=89.70.4
Re: Problem deleting structure in an array
So maybe you can figure out which array index values are NOT selected for deletion, clear out the original array and insert the un-deleted array elements back in there. On Tue, Jan 12, 2010 at 5:10 PM, Qing Xia wrote: > Nope, on 2nd thought, Chat was right. If your array index was messed up, > then the error would have occurred sooner while rendering the form. > > I bet the error happens only if item 3 is selected. If you do 1 and 2 then > you'll get the original number 2 remaining in the array. > > On Tue, Jan 12, 2010 at 4:51 PM, Qing Xia wrote: > >> You are looping over the array sequentially from 1 but are you sure your >> array key values are sequential from 1 as well? >> >> Your loop goes 1, 2, 3, which means it will expect to find >> session.shoppingCart[1].itemid, session.shoppingCart[2].itemid and >> session.shoppingCart[3].itemid. But are you sure those are indeed the key >> values in the session array? If your array key values go 1,3,4 then that >> will definitely break things. >> >> On Tue, Jan 12, 2010 at 4:31 PM, Chad Gray wrote: >> >>> >>> My best guess is if you remove one item it changes the structure of the >>> array and when it goes to remove the next one it cannot be found? >>> >>> Use CFDump to display the array as you are looping over it to help debug. >>> This way you can see the way the array is changing as you are removing >>> items. >>> >>> >>> >>> > -Original Message- >>> > From: jrmuniz [mailto:jrmu...@sfsailing.com] >>> > Sent: Tuesday, January 12, 2010 4:16 PM >>> > To: cf-talk >>> > Subject: Problem deleting structure in an array >>> > >>> > >>> > Hello: >>> > >>> > Sorry, I forgot the subject in my last post. >>> > >>> > I'm having an issue deleting a form structure that is in a shopping >>> cart >>> > array. >>> > I'm sure it's something simple I'm doing wrong, but it's driving me >>> crazy. >>> > >>> > I have a checkbox to select which items to delete. >>> > If only one item is selected there is no error and it works fine. >>> > If more than one item is selected then the error is triggered. >>> > Strangely, if I resubmit the form after the error it works OK. >>> > >>> > If I select two items to delete the error is: >>> > The error message is "Element at position [3] doesn't >>> exist in >>> > array" >>> > >>> > Here is the form code: >>> > >>> > >>> > >>> > >>> > >>> > >>> > >> > value="#session.shoppingcart[i].quantity#" size="3"> >>> > >>> > >>> > >> > value="#HTMLEditFormat(session.shoppingcart[i].catalog)#" size="10"> >>> > >>> > >>> > >> > value="#HTMLEditFormat(session.shoppingcart[i].description)#" >>> > size="40"> >>> > >>> > >> > value="#session.shoppingcart[i].price#" size="3"> >>> > >>> > >>> > >>> > >>> > Here is the cfc code: >>> > >>> > >>> > >>> > >>> > >>> > >>> > >>> > Any help is greatly appreciated. >>> > >>> > Regards, >>> > Jaime >>> > >>> > >>> > >>> > >>> > >>> >>> ~| Want to reach the ColdFusion community with something they want? Let them know on the House of Fusion mailing lists Archive: http://www.houseoffusion.com/groups/cf-talk/message.cfm/messageid:329604 Subscription: http://www.houseoffusion.com/groups/cf-talk/subscribe.cfm Unsubscribe: http://www.houseoffusion.com/cf_lists/unsubscribe.cfm?user=11502.10531.4
Re: Problem deleting structure in an array
Nope, on 2nd thought, Chat was right. If your array index was messed up, then the error would have occurred sooner while rendering the form. I bet the error happens only if item 3 is selected. If you do 1 and 2 then you'll get the original number 2 remaining in the array. On Tue, Jan 12, 2010 at 4:51 PM, Qing Xia wrote: > You are looping over the array sequentially from 1 but are you sure your > array key values are sequential from 1 as well? > > Your loop goes 1, 2, 3, which means it will expect to find > session.shoppingCart[1].itemid, session.shoppingCart[2].itemid and > session.shoppingCart[3].itemid. But are you sure those are indeed the key > values in the session array? If your array key values go 1,3,4 then that > will definitely break things. > > On Tue, Jan 12, 2010 at 4:31 PM, Chad Gray wrote: > >> >> My best guess is if you remove one item it changes the structure of the >> array and when it goes to remove the next one it cannot be found? >> >> Use CFDump to display the array as you are looping over it to help debug. >> This way you can see the way the array is changing as you are removing >> items. >> >> >> >> > -Original Message- >> > From: jrmuniz [mailto:jrmu...@sfsailing.com] >> > Sent: Tuesday, January 12, 2010 4:16 PM >> > To: cf-talk >> > Subject: Problem deleting structure in an array >> > >> > >> > Hello: >> > >> > Sorry, I forgot the subject in my last post. >> > >> > I'm having an issue deleting a form structure that is in a shopping cart >> > array. >> > I'm sure it's something simple I'm doing wrong, but it's driving me >> crazy. >> > >> > I have a checkbox to select which items to delete. >> > If only one item is selected there is no error and it works fine. >> > If more than one item is selected then the error is triggered. >> > Strangely, if I resubmit the form after the error it works OK. >> > >> > If I select two items to delete the error is: >> > The error message is "Element at position [3] doesn't >> exist in >> > array" >> > >> > Here is the form code: >> > >> > >> > >> > >> > >> > >> > > > value="#session.shoppingcart[i].quantity#" size="3"> >> > >> > >> > > > value="#HTMLEditFormat(session.shoppingcart[i].catalog)#" size="10"> >> > >> > >> > > > value="#HTMLEditFormat(session.shoppingcart[i].description)#" >> > size="40"> >> > >> > > > value="#session.shoppingcart[i].price#" size="3"> >> > >> > >> > >> > >> > Here is the cfc code: >> > >> > >> > >> > >> > >> > >> > >> > Any help is greatly appreciated. >> > >> > Regards, >> > Jaime >> > >> > >> > >> > >> > >> >> ~| Want to reach the ColdFusion community with something they want? Let them know on the House of Fusion mailing lists Archive: http://www.houseoffusion.com/groups/cf-talk/message.cfm/messageid:329603 Subscription: http://www.houseoffusion.com/groups/cf-talk/subscribe.cfm Unsubscribe: http://www.houseoffusion.com/cf_lists/unsubscribe.cfm?user=89.70.4
RE: Problem deleting structure in an array
> My best guess is if you remove one item it changes the > structure of the array and when it goes to remove the next > one it cannot be found? Yes. delete element [#i#] array size = #arrayLen(myArray)# When deleting within a loop, iterate in _descending_ order. delete element [#i#] array size = #arrayLen(myArray)# ~| Want to reach the ColdFusion community with something they want? Let them know on the House of Fusion mailing lists Archive: http://www.houseoffusion.com/groups/cf-talk/message.cfm/messageid:329602 Subscription: http://www.houseoffusion.com/groups/cf-talk/subscribe.cfm Unsubscribe: http://www.houseoffusion.com/cf_lists/unsubscribe.cfm?user=89.70.4
Re: Problem deleting structure in an array
You are looping over the array sequentially from 1 but are you sure your array key values are sequential from 1 as well? Your loop goes 1, 2, 3, which means it will expect to find session.shoppingCart[1].itemid, session.shoppingCart[2].itemid and session.shoppingCart[3].itemid. But are you sure those are indeed the key values in the session array? If your array key values go 1,3,4 then that will definitely break things. On Tue, Jan 12, 2010 at 4:31 PM, Chad Gray wrote: > > My best guess is if you remove one item it changes the structure of the > array and when it goes to remove the next one it cannot be found? > > Use CFDump to display the array as you are looping over it to help debug. > This way you can see the way the array is changing as you are removing > items. > > > > > -Original Message- > > From: jrmuniz [mailto:jrmu...@sfsailing.com] > > Sent: Tuesday, January 12, 2010 4:16 PM > > To: cf-talk > > Subject: Problem deleting structure in an array > > > > > > Hello: > > > > Sorry, I forgot the subject in my last post. > > > > I'm having an issue deleting a form structure that is in a shopping cart > > array. > > I'm sure it's something simple I'm doing wrong, but it's driving me > crazy. > > > > I have a checkbox to select which items to delete. > > If only one item is selected there is no error and it works fine. > > If more than one item is selected then the error is triggered. > > Strangely, if I resubmit the form after the error it works OK. > > > > If I select two items to delete the error is: > > The error message is "Element at position [3] doesn't > exist in > > array" > > > > Here is the form code: > > > > > > > > > > > > > > > value="#session.shoppingcart[i].quantity#" size="3"> > > > > > > > value="#HTMLEditFormat(session.shoppingcart[i].catalog)#" size="10"> > > > > > > > value="#HTMLEditFormat(session.shoppingcart[i].description)#" > > size="40"> > > > > > value="#session.shoppingcart[i].price#" size="3"> > > > > > > > > > > Here is the cfc code: > > > > > > > > > > > > > > > > Any help is greatly appreciated. > > > > Regards, > > Jaime > > > > > > > > > > > > ~| Want to reach the ColdFusion community with something they want? Let them know on the House of Fusion mailing lists Archive: http://www.houseoffusion.com/groups/cf-talk/message.cfm/messageid:329600 Subscription: http://www.houseoffusion.com/groups/cf-talk/subscribe.cfm Unsubscribe: http://www.houseoffusion.com/cf_lists/unsubscribe.cfm?user=11502.10531.4
RE: Problem deleting structure in an array
My best guess is if you remove one item it changes the structure of the array and when it goes to remove the next one it cannot be found? Use CFDump to display the array as you are looping over it to help debug. This way you can see the way the array is changing as you are removing items. > -Original Message- > From: jrmuniz [mailto:jrmu...@sfsailing.com] > Sent: Tuesday, January 12, 2010 4:16 PM > To: cf-talk > Subject: Problem deleting structure in an array > > > Hello: > > Sorry, I forgot the subject in my last post. > > I'm having an issue deleting a form structure that is in a shopping cart > array. > I'm sure it's something simple I'm doing wrong, but it's driving me crazy. > > I have a checkbox to select which items to delete. > If only one item is selected there is no error and it works fine. > If more than one item is selected then the error is triggered. > Strangely, if I resubmit the form after the error it works OK. > > If I select two items to delete the error is: > The error message is "Element at position [3] doesn't exist in > array" > > Here is the form code: > > > > > > > value="#session.shoppingcart[i].quantity#" size="3"> > > > value="#HTMLEditFormat(session.shoppingcart[i].catalog)#" size="10"> > > > value="#HTMLEditFormat(session.shoppingcart[i].description)#" > size="40"> > > value="#session.shoppingcart[i].price#" size="3"> > > > > > Here is the cfc code: > > > > > > > > Any help is greatly appreciated. > > Regards, > Jaime > > > > > ~| Want to reach the ColdFusion community with something they want? Let them know on the House of Fusion mailing lists Archive: http://www.houseoffusion.com/groups/cf-talk/message.cfm/messageid:329597 Subscription: http://www.houseoffusion.com/groups/cf-talk/subscribe.cfm Unsubscribe: http://www.houseoffusion.com/cf_lists/unsubscribe.cfm?user=89.70.4
