1. Save the topic

Adding a Form to a Topic

• To add a Form, follow the "More topic actions" link at the bottom of a topic, select "Add or Replace Form".
  • Select a Form Template topic. These are topics with names ending in Form that contain a Form Template table.
  • A Form is typically added to a template topic, either to the WebTopicEditTemplate topic in a web, or a new topic that serves as an application specific template topic.
  • Modify the template topic to set the initial Form values.

• Note: You can create a topic in one step, without going through the edit screen. To do that, specify the save script instead of the edit script in the form action. When you specify the save script you have to use the "post" method. Example:

• The edit and save scripts understand many more parameters, see TWikiScripts#edit and TWikiScripts#save for details.

• Tip: For TWiki applications you can automatically generate unique topicnames.

• Note: Initial values will not be set in the form of a new topic if you only use the formtemplate parameter.

Changing a Form

• To change a Form, follow the "More topic actions" link at the bottom of a topic, select "Add or Replace Form", and select a new Form.

• You can change a form definition, and TWiki will try to make sure you don't lose any data from the topics that use that form.

Using a form template on a different web

You can use a form template on a different web by specifying a form template in the WEB.TOPIC format.

In addition, you can put a comma separated list of webs in the TWIKIFORMPATH variable. It's referred to only when a form template is spcified without a web (TOPIC instead of WEB.TOPIC). The webs in TWIKIFORMPATH are examined in the listed order until the specified template is found.

TWIKIFORMPATH may contain TWiki variables. For example:

   * Set TWIKIFORMPATH = %APPLICATION_WEB%, %WEB%

If TWIKIFORMPATH is defined, the current web is examined only if all the webs listed in it don't have the form template.

Update Specific Form Fields

All the form fields are shown and can be updated when editing a topic that has a form. It is possible to have more control over the layout of a form, or update just a subset of the form fields by using a custom HTML form. For example, in a bug tracker, each topic would include a header topic that shows a form with some fields to update specific form fields of the bug item. Use the EDITFORMFIELD variable to easily create this form in the header topic. Example:

%EDITFORMFIELD{ "form" type="start" action="save" topic="%BASETOPIC%" }%
| Priority: | %EDITFORMFIELD{ "Priority" topic="%BASETOPIC%" }% |
| Status:   | %EDITFORMFIELD{ "Status"   topic="%BASETOPIC%" }% |
|  | %EDITFORMFIELD{ "form" type="submit" value="Update" }% |
%EDITFORMFIELD{ "LastUpdate" type="hidden" value="%SERVERTIME{$year-$mo-$day}%" }%
%EDITFORMFIELD{ "form" type="end" }%

Assuming the base topic has a BugForm with Priority and Status fields of type select, a LastUpdate field of type text, and some other fields. Above form shows a table with selectors for Priority and Status, and an Update button. On form submit, the Priority, Status and LastUpdate fields are updated in the base topic.