Technical References - [removelineitem]

numero = 274
interpreted = N
texte = [removelineitem cart=cartID&index=3]Putting [removelineitem] in your template immediately deletes the specified line item from the specified shopping cart file. See also [addlineitem]. If the cart file is not in a ShoppingCarts folder, you may use the alternate form file=/folder/cartID instead of cart=cartID. 

Take caution when removing multiple items. As you remove items, the index numbering changes. When you remove item number 2, the subsequent items move up one. For this reason, you need to figure out a way to adjust the index number. Decrement the index each time something's deleted, such as the following:

(In this example, in the incoming form the cart items each have a delete checkbox named kill_[index]. Note that in a math context, you do not need the square brackets within the expression.)

[math show=f]adjustby=0[/math][formvariables name=kill_&exact=F][math show=f]deleteitemnumber=[getchars start=6][name][/getchars]+adjustby[/math][removelineitem file=ShoppingCarts/[cart]&index=[deleteitemnumber]][math show=f]adjustby=adjustby-1[/math][/formvariables]

 [removelineitem cart=cartID&index=3]

Putting [removelineitem] in your template immediately deletes the specified line item from the specified shopping cart file. See also [addlineitem]. If the cart file is not in a ShoppingCarts folder, you may use the alternate form file=/folder/cartID instead of cart=cartID.

Take caution when removing multiple items. As you remove items, the index numbering changes. When you remove item number 2, the subsequent items move up one. For this reason, you need to figure out a way to adjust the index number. Decrement the index each time something's deleted, such as the following:

(In this example, in the incoming form the cart items each have a delete checkbox named kill_[index]. Note that in a math context, you do not need the square brackets within the expression.)

[math show=f]adjustby=0[/math]

[formvariables name=kill_&exact=F]
[math show=f]deleteitemnumber=[getchars 
start=6][name][/getchars]+adjustby[/math]

[removelineitem file=ShoppingCarts/[cart]&index=[deleteitemnumber]]
[math show=f]adjustby=adjustby-1[/math]

[/formvariables]

Terry Wilson

DOWNLOAD WEBDNA NOW!

Top Articles:

Technical Change History

This Technical Change History provides a reverse chronological list of WebDNA changes...

WebDNA Modules

A list of the currently available modules...

[biotype]

BioType is a behavioral biometrics WebDNA function based on ADGS research and development (from version 8...

AWS Raw WebDNA LAMP-Plus WebServer

Amazon Web Services (AWS) README for Machine Image ID...

WebDNA Libraries

A list of available libraries for WebDNA...

F.A.Q

A compilation of some user's questions...

Related Readings:

[convertwords]

Changes specified words in a string of text to different words...

formulas.db

The formulas...

[xmlparse]

Enable the WebDNA programmer to input XML data into a WebDNA variable...

[protect]

...

[sendmail]

There is hardly a website that doesn't at some point need to send an email...

[setheader]

Changes header values in a shopping cart...