These blocks are used when navigating between pages and to manage repeating pages.
Add an Instance of a Page
These blocks add a new page instance immediately after the current instance, or at the set position. You could add an instance to the end of the current set using:
Instance Counts and Validation
Use these blocks to count how many instances exist and check what the minimum and maximum number of instances are set as in the page settings. All counts return integers.
You can also check if the instance count is validated in the page settings (the block returns true or false) and validate the current count. Validating the count returns one of:
- -1 - The count of instances is less than the minimum
- 0 - The count of instances is between the minimum and maximum (inclusive)
- 1 - The count of instances exceeds the maximum
Getting the Page Instance
These blocks return the current page instance number. Because page instance counts are zero-based (the first instance is 0) the "displayable" version of the block starts at 1.
First Time on Page or Instance
Check whether this is the first time on this page or instance. These blocks return true or false.
Page Settings and Navigation
These first blocks return the page name and check whether or not the page is repeatable.
This block returns the names and titles of all of the pages in the form. See .getPageNames for an example.
These blocks are useful when navigating between page instances. They return the index (an integer) of the page the user was last on. In some circumstances, like when deleting a page instance, the previous page instance may have been deleted. The "navigable" block only returns an instance that does exist, or the next in the index if the instance has been deleted.
Use these blocks when building navigation functions, see the "Navigation Function" section of Page Modes for more information.
Page Mode and State
Repeating pages have three modes. The default/no mode (when someone is filling out a page), edit, and remove.
The mode block returns null (if the page instance isn't in a particular mode), EDIT or REMOVE.
The page state holds information about a repeating page. State is described fully in the .getRepeatingPageState article.
Removing Pages
Use these blocks to remove a page or a particular instance of a page. The "remove all instances" block works on repeating and non-repeating pages.
Page Submission Information
These blocks return information about the action or button that caused the page to be submitted. There's more information about them in the following articles:
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