Last updated 17 August 2015. Created on 28 May 2012.
Edited by Richard15, blueminds. Log in to edit this page.

<< mforms project page

Installation and configuration

Mforms is a library, so by itself it does not provide any functionality (besides the real-life examples in the mforms example module). Therefore there is no configuration or installation besides enabling the module in the module list.

Basic usage

Included module mforms_example contains several real life examples that are documented in code. To find out what it does visit /mforms page after you enable mforms_example module.

Mforms architecture

For faster dive into mforms here is the basic architecture:


STORE_KEY - not just identifies the storage slot for submitted values, it represents the identifier of whole multi-step form implementation.

Steps file - The file where individual form steps with their validate and submit callbacks reside. See mforms_example/mforms/ for demonstration. This file must be named in the following pattern: and placed in "mforms" directory of the module in which you are implementing the multi step form.

Store object - MformsIstore implementation responsible for storing submitted values and internal mforms data needed to control the stepping process.

Steps object - it is aware of all steps, current step, next step and previous step.

Controls object - the UI control object. It controls the form buttons.

Mforms initialization

Initialization process consists of instantiation of store, steps and controls objects and calling mforms_init_module() function into which you pass these instantiated objects. You can do this in a Drupal page callback followed by call of drupal_get_form(). However this approach will not allow you to handle ajax calls.

The proper way is to implement hook_STORE_KEY_mforms_init() and
within this hook implementation do all initialization - see mforms_example.module, function mforms_example_fs_store_example_mforms_init().

Drupal form callbacks

The form lifecycle is handeled by Drupal. Therefore there must be regular form callbacks: FORM_ID(), FORM_ID_validate() and FORM_ID_submit(). Inside these mforms takes over as can be seen in the, i.e. functions mforms_example_fs_form[validate, submit]().

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