Audit Log Plugin for CakePHP by imsamurai

API Documentation

Abstract

A logging plugin for CakePHP. The included AuditableBehavior creates an audit history for each instance of a model to which it's attached.

The behavior tracks changes on two levels. It takes a snapshot of the fully hydrated object after a change is complete and it also records each individual change in the case of an update action.

Features

Support for CakePHP 2.0. Thanks, @jasonsnider.
Tracks object snapshots as well as individual property changes.
Allows each revision record to be attached to a source -- usually a user -- of responsibility for the change.
Allows developers to ignore changes to specified properties. Properties named created, updated and modified are ignored by default, but these values can be overwritten.
Handles changes to HABTM associations.
Fully compatible with the PolymorphicBehavior.
Does not require or rely on the existence of explicit models revisions (AuditLog) and deltas (AuditLogDeltas).

Installation

CakePHP >= 2.0

As an Archive

Download and extract the source to app/Plugin/AuditLog.

As a Submodule

$ git submodule add git://github.com/imsamurai/CakePHP-Audit-Log-Plugin.git <path_to>/app/Plugin/AuditLog
$ git submodule init
$ git submodule update

Via composer

add into your composer "require": { "imsamurai/audit-log": "1.1.*", }
composer update

To create tables you can use schema shell. To create tables execute:

cd <path_to>/app/
chmod +x ./Console/cake
./Console/cake schema create -p AuditLog

CakePHP 1.3.x

For use with CakePHP 1.3.x, be sure to use code from the 1.3 branch and follow the instructions in that README file (NOT MAINTAINED).

Next Steps

Run the install.sql file on your CakePHP application database or use schema. This will create the audits and audit_deltas tables that will store each object's relevant change history.

Add plugin into bootstrap.php

CakePlugin::load('AuditLog', array('bootstrap' => true));

Create a currentUser() method, if desired.

The AuditableBehavior optionally allows each changeset to be "owned" by a "source" -- typically the user responsible for the change. Since user and authentication models vary widely, the behavior supports a callback method that should return the value to be stored as the source of the change, if any.

The currentUser() method must be available to every model that cares to track a source of changes, so I recommend that a copy of CakePHP's app_model.php file be created and the method added there. Keep it DRY, right?

The behavior expects the currentUser() method to return an associative array with an id key. Continuing from the example above, the following code might appear in the AppModel:
```
public function currentUser() {
  return AuthComponent::user();
}
```
Attach the behavior to any desired model and configure.

Usage

AuditableBehavior

Applying the AuditableBehavior to a model is essentially the same as applying any other CakePHP behavior. The behavior does offer a few configuration options:

`ignore`: An array of property names to be ignored when records are created in the deltas table.
`habtm`: An array of models that have a HABTM relationship with the acting model and whose changes should be monitored with the model. If the HABTM model is auditable in its own right, don't include it here. This option is for related models whose changes are _only_ tracked relative to the acting model.

AuditHelper

user(user) render user name with link to user profile (see config AuditLog.User)
listBlock(conditions, ajax) render widget with compact table of audit logs depends on conditions and ajax. Second parameter means that widget will be loaded by ajax or request action (default is ajax). This method simply invoke action AuditController::index with list=1 and conditions (also count=<count> if it set).

Syntax

# Simple syntax accepting default options
class Task extends AppModel {
    public $actsAs = array( 'AuditLog.Auditable' );

    # 
    # Additional model code.
    #
}

# Syntax with explicit options
class Task extends AppModel {
    public $actsAs = array(
        'AuditLog.Auditable' => array(
            'ignore' => array( 'active', 'name', 'updated' ),
            'habtm'  => array( 'Type', 'Project' )
        )
    );

    # 
    # Additional model code.
    #
}

Limitations

The master branch is not backwards compatible with CakePHP <=1.3.x. If you need compatibility with these version please install the code from the 1.3 branch and follow the instructions in that README.

License

This code is licensed under the MIT license.

Notes

Feel free to submit bug reports or suggest improvements in a ticket or fork this project and improve upon it yourself. Contributions welcome.

Changelog

1.1.1

Add link view all in widget

1.1.0

Add to composer and travis.
Change source_id to user_id field in db.
Handle case of saving AuditDelta for array value in field (actual saving for model is provided by https://github.com/imsamurai/cakephp-serializable-behaviour)
Default view for list of audit records with pagination and filter (for nice style you need bootstrap 2)
Default view for concrete audit record and it deltas
Helper that has ajax/requestAction widget for display short list of audit records and format user email with link to user view in your application
Some additional parameters you can see in plugin bootstrap.php