Simple forms

Setup

cp config.php.example config.php
editor config.php
mkdir templates

Templates

All form templates must be placed in the templates directory and have the extension .form. Any non-matching files will be ignored. The ID of a template in the database is the filename without the .form extension.

Template syntax

The file format recognizes three basic types of data: text, questions and alternatives.

Text is anything that is not recognized as a question or an alternative. Each line is treated as a paragraph.

A question is a line with a question type in square brackets ([]) at the end. Possible types are text, longtext, radio, check and range.

radio and check type questions need to have alternatives. Alternatives are defined by creating a block of lines immediately following the question, indented by two spaces.

When declaring a question, it is possible to add a comma-separated list of extra modifiers using a colon (:) trailing the question type string inside the square brackets. The exact effect of extra modifiers depends on the question type, see examples.form for currently supported modifiers.

Questions can be nested, so for example it is possible to have a text answer as an alternative to a multiple-choice question.

Indentation can also be used for logical grouping. An indented block following a non-question line will simply be treated as a 'child' of that line.

There is also basic styling. Create a header by adding between one and three hash signs (#) at the beginning of the line. Make the line bold by adding an exclamation mark (!) to the beginning of the line. In-line HTML tags are also respected.

In order for a form to be listed on the index page, it must contain at least one heading. The first heading in the form will be used as its title on the index page.

Examples in example.form

Changes files

This is a bit hacky and a work in progress.

Since the questions are stored in the database along with their respective answers, any changes to the form once data has been entered will cause exported data to contain both old and new versions of questions and answers. In order to get rid of this duplication, especially in cases where a minor wording change etc has been made, it is possible to log changes to questions in a .changes file.

Changes files are stored in the templates directory along with their corresponding forms. The changes file for exampleform.form would be exampleform.changes.

Changes files currently have a few important limitations:

• Only questions are handled, no answers.
• Questions are specified in an unqualified format.
• Question type or other metadata is not considered, only wording.

The unqualified format means that it is not possible to disambiguate between two identical subquestions nested under different top-level questions, etc. This means that any question that starts out identical to another must be updated identically in future, or interesting export results will occur.

This will hopefully change in future with a better changes file syntax.

Changes files are wholly optional. If no changes file exists for a form, all versions of a question will be exported, each to a unique column in the export.

Changes file syntax

A changes file consists of blocks of lines separated by an empty line. The first line in a block is the most recent version, as present in the current version of the corresponding template file. Subsequent lines in a block are old versions of the question, that will be merged into the current version on export.

This is an example changes file:

The current version of a question
A previous version of the same question
Another version

The current version of another question
Old version of this second question

Changing one question to use the wording from another question is guaranteed to produce unexpected results.

Data export

The data export function will mostly export all data unaltered, with some notable exceptions:

• Any answer formatted as [number] - [arbitrary text] (e.g. "3 - sometimes") will be stripped of its text part and only exported as [number] (e.g. "3").

• As noted above, if a form has a changes file, it will be used to merge columns that are regarded as old variants of a question into the column with the latest question format.

These transformations are wholly in the export process, so the database always contains an unchanged record of all questions and answers as they were submitted.