Cloning a Record

Often, you want to copy a record and change one thing, like a date, or make some other minor modification.

I have come up with a very simple technique. Alongside the link to EDIT a record, I make a link to CLONE a record, adding clone=t to the editing link. Then in the editing code, there are only 2 simple alterations. In the form itself, use [hideif [clone]=t] to hide the hidden variable for the record ID, and in the replace context, add &append=t&autonumber=ID (or whatever your record ID field is called). When you search for the record to populate your field, it finds [ID]. But when you submit the form, this variable is not sent and only the raw code, [ID] displays for the replace, so the record is not found. Hence, a new record is created with a new ID.

<a href="youreditpage.dna?edit=t&ID=[ID]">EDIT</a> | <a href="youreditpage.dna?edit=t&ID=[ID]&clone=t">COPY</a>

FORM element
[hideif [clone]=t] <input type=hidden name=ID value=[ID]>[/hideif]

WRITE to the DB
[replace db=yourdatabase.db&eqIDdatarq=[ID]&append=T&autonumber=ID]....[/replace]


Make sure your editing form contains all the fields; often a new form has additional fixed fields that are set only on a new record. So you may have to add these in hidden form elements.

If you want to make sure a particular field is replaced with new info, do something like:
<input type=text name=mtgdate value="[hideif [clone]=t][mtgdate][/hideif]">

You can also put this at the top of the form:

[showif [clone]=t]This form will create a New Copy of an existing record[/showif]

to reassure yourself that you aren't editing away an existing record.

You can change the text on the submit button to Clone in the same way with showif/hideif.

Terry Wilson


Top Articles:

Tips and Tricks

A list of user-submitted tips ...

AWS Raw WebDNA LAMP-Plus WebServer

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

WebDNA reference

A list of all WebDNA instructions...

WebDNA Modules

A list of the currently available modules...

WebDNA Libraries

A list of available libraries for WebDNA...

Technical Change History

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

Related Readings:

Do you hate updating the copyright notice at the bottom of all your pages?

It's January 1st and you have to update the copyright notice at the bottom of all your websites...

Using a simple Array of Variables with [interpret]

The [interpret] context is very powerful command in the hands of a skilled WebDNA programmer...

How old am I?

You want to express an age in years given the dob (mm/dd/yyyy) and today's date...

WebDNA Google Map Mashup

Generate a Google map with pins on your database addresses...

Write Once Use Many

Reuse the same code over and over again on your site with the [include] context...

Hideif on IP range

This will show or hide stuff according to the IP...