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add more documentation

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Uwe Steinmann 2016-02-16 07:05:45 +01:00
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Notifications
-----------------------------------------------
Most changes made to documents or folders in SeedDMS can be monitored
by the users. Notifications are send by email if a user or group
has subscribed it.
The following notifications are send to all users and groups having
registered a notification for the event:
op/op.AddDocument.php
op/op.AddMultiDocument.php
* adding a new document to a folder
subscribers of the parent folder
op/op.AddSubFolder.php
* adding a new subfolder to a folder
subscribers of the parent folder
op/op.AddFile2.php
op/op.AddFile.php
* adding a new file to a document
subscribers of the document
op/op.ApproveDocument.php
* approval status has changed
subscribers of the document
op/op.DocumentAccess.php
* access rights or ownership has changed
subscribers of the document
op/op.DocumentNotify.php
* document notification was changed
owner or group of the document/notification
op/op.EditComment.php
* document's comment has been changed
subscribers of the document
op/op.EditDocument.php
* document has been changed
subscribers of the document
op/op.EditFolder.php
* folder has been changed
subscribers of the folder
op/op.FolderAccess.php
* access rights or ownership has changed
subscribers of the folder
op/op.FolderNotify.php
* folder notification was changed
owner or group of the folder/notification
op/op.ManageNotify.php
* notification was removed
owner of the notification
op/op.MoveDocument.php
* document was moved
subscribers of the document
op/op.MoveFolder.php
* folder was moved
subscribers of the folder
op/op.OverrideContentStatus.php
op/op.RemoveDocumentFile.php
* file of document was removed
subscribers of the document
op/op.RemoveDocument.php
* document was removed
subscribers of the document
op/op.RemoveFolder.php
* folder was removed
subscribers of the folder
op/op.RemoveVersion.php
* version of document was removed
subscribers of the document
op/op.RemoveWorkflowFromDocument.php
* Workflow has been removed from document version
subscribers of the document
op/op.ReturnFromSubWorkflow.php
* Subworkflow has been ended and parent workflow will be continued
subscribers of the document
op/op.ReviewDocument.php
* document was reviewed
subscribers of the document
op/op.RewindWorkflow.php
* Workflow was rewind to beginning
subscribers of the document
op/op.RunSubWorkflow.php
* Subworkflow was started
subscribers of the document
op/op.TriggerWorkflow.php
* Workflow transition was triggered
subscribers of the document
op/op.UpdateDocument2.php
op/op.UpdateDocument.php
* document was updated
subscribers of the document

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This README was written by Eric Smith
======================================================
Steps that I took to install SeedDMS on Ubuntu 12.10
- a personal account and not an authoritative guide.
======================================================
Download four tar balls from;
http://sourceforge.net/projects/seeddms/files/seeddms-4.0.0-pre5/
seeddms-4.0.0-pre5.tar.gz
SeedDMS_Preview-1.0.0.tgz
SeedDMS_Lucene-1.1.1.tgz
SeedDMS_Core-4.0.0pre5.tgz
Install as follows the pear components:
sudo pear install SeedDMS_Core-4.0.0pre5.tgz
sudo pear install SeedDMS_Preview-1.0.0.tgz
sudo pear install SeedDMS_Lucene-1.1.1.tgz
Download and install the pear Log application:
wget http://download.pear.php.net/package/Log-1.12.7.tgz
sudo pear install Log-1.12.7.tgz
And zend:
sudo pear channel-discover zend.googlecode.com/svn
sudo pear install zend/zend
I installed the following packages, not all of which may be required
and you may require other packages, please check the dependencies on
the README.md for example for full text search, you need pdftotext,
catdoc, xls2csv or scconvert, cat, id3
sudo apt-get install php5-mysql php5-mysqlnd libapache2-mod-php5
sudo apt-get install pdo_mysql php5-gd id3 scconvert
sudo apt-get install php-http-webdav-server
sudo apt-get install zend-framework zend-framework-bin
sudo apt-get install libzend-framework-zendx-php
sudo apt-get install libjs-dojo-core libjs-dojo-dijit libjs-dojo-dojox
sudo apt-get install libzend-framework-php (It kept bitching about Zend so I just kept piling on packages until it worked)
mbstring is already a part of libapache2-mod-php5
pepper:~> show libapache2-mod-php5|grep mbstring
mbstring mhash openssl pcre Phar posix Reflection session shmop SimpleXML
Define three locations:
[1] Some cosy place in yourfile system for the source files to which you
will link
I chose "/opt/seeddms-4.0.0-pre5/"
untar seeddms-4.0.0-pre5.tar.gz into this location
[2] Make a directory and three subdirectories for the data for your site;
I chose to do this under "/opt/dms/seeddms_multisite_test/data"
sudo mkdir -p /opt/dms/seeddms_multisite_test/data/lucene/
sudo mkdir /opt/dms/seeddms_multisite_test/data/staging/
sudo mkdir /opt/dms/seeddms_multisite_test/data/cache/
Give ownership (or write access) to your httpd process to those directories;
sudo chown -cvR www-data /opt/dms/seeddms_multisite_test/data/
[3] Somewhere under your www root, make a directory for the sources of
your site:
These can be of course under different virtual domains.
/var/www/www.mydomain.eu/seeddms_multisite_test
cd /var/www/www.mydomain.eu/seeddms_multisite_test;
sudo ln -s /opt/seeddms-4.0.0-pre5 src (README.md does not include the `src'!)
ln -s src/inc inc
ln -s src/op op
ln -s src/out out
ln -s src/js js
ln -s src/views views
ln -s src/languages languages
ln -s src/styles styles
ln -s src/themes themes
ln -s src/install install
ln -s src/index.php index.php
If need be;
sudo chown -cvR www-data /var/www/www.mydomain.eu/seeddms_multisite_test/
Create Dataabse;
Run the following sql commands to create your db and a user with
appropriate privileges.
mysql> create database seeddms_multisite_test;
mysql> grant all privileges on seeddms_multisite_test.* to seeddms@localhost identified by 'your_passwd';
Point your browser to the location of your instance as in [3] above
and /install
I resorted to a text browser on my server due to failure to access the
db from a remote browser;
pepper:~> elinks www.mydomain.eu/seeddms_multisite_test/install
This is how I filled it in;
SeedDMS: INSTALL
SeedDMS Installation for version 4.0.0
Server settings
Root directory: /opt/seeddms-4.0.0-pre5/_______________________
Http Root: /seeddms_multisite_test/_______________________
Content directory: /opt/dms/seeddms_multisite_test/data___________
Directory for full text index: /opt/dms/seeddms_multisite_test/data/lucene/___
Directory for partial uploads: /opt/dms/seeddms_multisite_test/data/staging/__
Core SeedDMS directory: _______________________________________________
Lucene SeedDMS directory: _______________________________________________
Extra PHP include Path: _______________________________________________
Database settings
Database Type: mysql________________
Server name: localhost____________
Database: seeddms_multisite_tes
Username: seeddms______________
Password: ********_____________
Create database tables: [X]
[ Apply ]
If all is okay (and I hope this happens more quickly for you than for me),
you should be notified accordingly and invited to login to your new site
with credentials admin/admin. (This password is cleverly set to expire
in a couple of days. So do not get a shock like I did when it suddenly
does not work).
-------------------------------------------------------------------------------
To make additional sites;
If you wish to make additional sites, you need to copy the data directories thusly;
sudo cp -avr /opt/dms/seeddms_multisite_test /opt/dms/seeddms_multisite_test_2
And the sources thusly;
sudo cp -avr /var/www/www.mydomain.eu/seeddms_multisite_test /var/www/www.mydomain.eu/seeddms_multisite_test_2
And of course make data directories for this site:
sudo mkdir -p /opt/dms/seeddms_multisite_test_2/data/lucene/
sudo mkdir /opt/dms/seeddms_multisite_test_2/data/staging/
sudo mkdir /opt/dms/seeddms_multisite_test_2/data/cache/
Then create another database as shown above but of course give the db
another name.
Run the install again from the new location.

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Workflows in SeedDMS
====================
SeedDMS supports approval and review of documents for a long time.
In many cases this is sufficient for a simple workflow management.
Nevertheless there was growing demand for a more powerful document
workflow. Since version 4.0.0 SeedDMS allows to define arbitrary
workflows for each document content. In order to understand how
workflows in SeedDMS work, one has to understand how a workflow is modelled.
Let's start with a definition of some terms.
workflow: a list of document states and transitions. A workflow starts
in a preset initial state and traverses along the transitions into other
states until no more transitions are possible.
state: the current status of a document (actually a document content)
A state can be for example 'rejected', 'approved', 'waiting for qm'.
Document jump from state to state when transitions are fired.
States are the nodes of a graph.
transition: a transition is the change from one state to a new state
Transitions are the edges of a graph. A transition can only be
triggered by a given list of users and groupѕ, when a defined action
is run. Such an action can be 'approve', 'revise', 'reject', etc.
transitions may need more than one trigger to fire, e.g. if several
users have to approve a document.
trigger a transition: a user runs an action on the document which possibly
changes the state. Internally this is identical to triggering a transition.
Such a trigger may or may not change the state of the document,
because there could
be other users which also have to trigger the transition.
After each trigger of an transition it will
be checked whether all conditions are met to change the state.
Triggers are currently only implemented for user interaction, but
other triggers could be added.
action: the actual operation run on the document. Each transition has
an action which when run, triggers the transition. Actions have just a name.
sub workflow: The modelling of a workflow is identical to a regular
workflow. Any workflow can be used as a sub workflow. Branching into
a sub workflow is only possible if the current state is equal to the
initial state of the sub workflow and the user is allowed to trigger
the next transition in the current workflow.
A workflow and a sub workflow are just a list
of transitions and an initial state. There is no principal difference
between the two and they are equally modelled. Starting from an initial state
there are a number of possible transitions ending in a new state. Each
transition can only be triggered if the user has the right to do so.
A workflow can be assigned to a document just like any other attribute
if the user has sufficient rights. Once a workflow is assigned, the document
will be in the initial state of the workflow. As long as the workflow
has not left its initial state, it can be removed from the document by
any users with write permission on the document. Once it has left the
initial state it cannot be removed without rewinding the workflow to
its initial state. Rewinding the workflow will remove the log of triggered
transitions and set the document status on the initial state of the
workflow. Rewinding can only be done by administrators.
The purpose of sub workflows is to replace a transition with more
states in between. Such a case can happen, if approval or rejection
of a document is put in charge of a group of persons, e.g. a department.
If the department head decides to set up its own workflow within his
department, he can run a sub workflow. During the lifetime of the sub
workflow, the former workflow (parent workflow) will be paused. Sub workflows
can only be started if the current document state is equal to the initial
state of the sub workflow.
In order to return to the parent workflow two conditions must be met:
1. the state of the document must be a valid state in the parent workflow
2. the person initiating the return to the parent workflow must be allowed
to trigger the transition which was replaced by the sub workflow
The second condition requires all end states in the sub workflow, also
being a state in the parent workflow. Currently this is not checked before
entering the sub workflow.
A workflow that was accidently added to a document can be removed
as long as it is still in the initial state of the workflow. Once
a transition into a consecutive state has happemed the workflow cannot
be removed anymore. In such a case the administrator has to rewind
the workflow, which removes all triggers including the users comments
and resets the initial state. The same procedure is true for sub workflows
as well. Once a sub workflow has started it can only be left as long
as it is in its initial state or has reached a state in the parent
workflow. Leaving a workflow inbetween will required to rewind it to
the begining and dismiss all transitions done so far.

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SeedDMS Installation Instructions
==================================
NOTE FOR VERSION 4.0.0
======================
Since version 4.0.0 of SeedDMS installation has been simplified.
ADOdb is no longer needed because the database access is done by
PDO.
IMPORTANT NOTE ABOUT TRANSLATIONS
=================================
As you can see SeedDMS provides a lot of languages but we are not professional
translators and therefore rely on user contributions.
If your language is not present in the login panel:
- copy the language/English/ folder and rename it appropriately for your
language
- open the file `languages/your_lang/lang.inc` and translate it
- open the help file `languages/your_lang/help.htm` and translate it too
If you see some wrong or not translated messages:
- open the file `languages/your_lang/lang.inc`
- search the wrong messages and translate them
if you have some "error getting text":
- search the string in the english file `languages/english/lang.inc`
- copy to your language file `languages/your_lang/lang.inc`
- translate it
If there is no help in your language:
- Copy the English help `english/help.htm` file to your language folder
- translate it
If you apply any changes to the language files please send them to the
SeedDMS developers <info@seeddms.org>.
http://www.iana.org/assignments/language-subtag-registry has a list of
all language and country codes.
REQUIREMENTS
============
SeedDMS is a web-based application written in PHP. It uses the MySQL RDBMS
or sqlite3 to manage the documents that were uploaded into the application.
Make sure you have PHP 5.3 and MySQL 5 or higher installed. SeedDMS
will work with PHP running in CGI-mode as well as running as module under
apache. If you want to give your users the opportunity of uploading passport
photos you have to enable the gd-library (but the rest of SeedDMS will
work without gd, too).
Here is a detailed list of requirements:
1. A web server with at least php 5.3
2. A mysql database, unless you use sqlite
3. The php installation must have support for `pdo_mysql` or `pdo_sqlite`,
`php_gd2`, `php_mbstring`
4. Various command line programms to convert files into text for indexing
pdftotext, catdoc, xls2csv or scconvert, cat, id3 (optional, only needed
for fulltext search)
5. ImageMagic (the convert program) is needed for creating preview images
6. The Zend Framework (version 1) (optional, only needed for fulltext search)
7. The pear Log package
8. The pear HTTP_WebDAV_Server package (optional, only need for webdav)
9. SLIM RestApi
10. FeedWriter from https://github.com/mibe/FeedWriter
BEFORE YOU START
================
SeedDMS has changed its installation process with version 3.0.0. This gives
you many more options in how to install SeedDMS. First of all, SeedDMS was
split into a core package (`SeedDMS_Core-<version>.tar.gz`) and the web
application itself (`seeddms-<version>.tar.gz`). The core is a pear package
which could be installed as one. It is responsible for all the database
operations. The web application contains the ui not knowing anything about
the database layout. Second, one SeedDMS installation can be used for
various customer instances by sharing a common source. Starting with
version 3.2.0 a full text search engine has been added. This requires
the zend framework and another pear package `SeedDMS_Lucene-<version>.tar.gz`
which can be downloaded from the SeedDMS web page. Version 4.0.0 show
preview images of documents which requires `SeedDMS_Preview-<version>.tar.gz`.
Finally, SeedDMS has
got a web based installation, which takes care of most of the installation
process.
Before you proceed you have to decide how to install SeedDMS:
1. with multiple instances
2. as a single instance
Both have its pros and cons, but
1. setting up a single instance is easier if you have no shell access to
the web server
2. the installation script is only tested for single instances
Installation for multiple instances shares the same source by many
instances but requires to create links which is not in any case possible
on your web server.
0. Some preparation
-------------------
A common source of problems in the past have been the additional software
packages needed by SeedDMS. Those are the PEAR packages `Log` and
`HTTP_WebDAV_Server` as well as the `Zend_Framework`.
If you have full access to the server running a Linux distribution it is
recommended to install those with your package manager if they are provided
by your Linux distribution. If you cannot install it this way then choose
a directory (preferable not below your web document root), unpack the
software into it and extend the php include path with your newly created
directory. Extending the php include can be either done by modifying
php.ini or adding a line like
> php_value include_path '/home/mypath:.:/usr/share/php'
to your apache configuration or setting the `extraPath` configuration
variable of SeedDMS.
For historical reasons the path to the SeedDMS_Core and SeedDMS_Lucene package
can still be set
in the configuration, which is not recommend anymore. Just leave those
parameters empty.
On Linux/Unix your web server should be run with the environment variable
LANG set to your system default. If LANG=C, then the original filename
of an uploaded document will not be preserved if the filename contains
non ascii characters.
Turn off magic_quotes_gpc in your php.ini, if you are using a php version
below 5.4.
1. Using the installation tool
------------------------------
Unpack seeddms-<version>.tar.gz below the document root of
your web server.
Install `SeedDMS_Preview-<version>.tar.gz` and
`SeedDMS_Core-<version>.tar.gz` either as a regular pear package or
set up a file system structure like pear did somewhere on you server.
For the full text search engine support, you will also
need to install `SeedDMS_Lucene-<version>.tar.gz`.
For the following instructions we will assume a structure like above
and seeddms-<version> being accessible through
http://localhost/seeddms/
* Point you web browser towards http://hostname/seeddms/install/
* Follow the instructions on the page and create a file `ENABLE_INSTALL_TOOL`
in the conf directory.
* Create a data directory with the thre sub directories staging, cache
and lucene.
Make sure the data directory is either *not* below your document root
or is protected with a .htaccess file against web access. The data directory
needs to be writable by the web server.
* Clicking on 'Start installation' will show a form with all necessary
settings for a basic installation.
* After saving your settings succesfully you are ready to log in as admin and
continue customizing your installation with the 'Admin Tools'
2. Detailed installation instructions (single instance)
-------------------------------------------------------
You need a working web server with MySQL/PHP5 support and the files
`SeedDMS-<version>.tar.gz`, `SeedDMS_Preview-<version>.tar.gz` and
`SeedDMS_Core-<version>.tgz`. For the
full text search engine support, you will also need to unpack
`SeedDMS_Lucene-<version>.tgz`.
* Unpack all the files in a public web server folder. If you're working on
a host machine your provider will tell you where to upload the files.
If possible, do not unpack the pear packages `SeedDMS_Core-<version>.tgz`,
`SeedDMS_Preview-<version>.tgz` and
`SeedDMS_Lucene-<version>.tgz` below the document root of your web server.
Choose a temporary folder, as the files will be moved in a second.
Create a directory e.g. `pear` in the same directory where you unpacked
seeddms and create a sub directory SeedDMS. Move the content except for the
`tests` directory of all SeedDMS pear
packages into that directory. Please note that `pear/SeedDMS` may not
(and for security reasons should not) be below your document root.
You will end up with a directory structure like the following
> seeddms-<version>
> pear
> SeedDMS
> Core.php
> Core
> Lucene.php
> Lucene
> Preview
> Preview.php
Since they are pear packages they can also be installed with
> pear install SeedDMS_Core-<version>.tgz
> pear install SeedDMS_Lucene-<version>.tgz
> pear install SeedDMS_Preview-<version>.tgz
* The PEAR package Log is also needed. It can be downloaded from
http://pear.php.net/package/Log. Either install it as a pear package
or place it under your new directory 'pear'
> pear
> Log
> Log.php
* The package HTTP_WebDAV_Server is also needed. It can be downloaded from
http://pear.php.net/package/HTTP_WebDAV_Server. Either install it as a
pear package or place it under your new directory 'pear'
> pear
> HTTP
> WebDAV
> Server
> Server.php
If you run PHP in CGI mode, you also need to place a .htaccess file
in the webdav directory with the following content.
RewriteEngine on
RewriteRule .* - [env=HTTP_AUTHORIZATION:%{HTTP:Authorization},last]
* Create a data folder somewhere on your web server including the subdirectories
staging, cache and lucene and make sure they are writable by your web server,
but not accessible through the web.
For security reason the data folder should not be inside the public folders
or should be protected by a .htaccess file. The folder containing the
configuration (settings.xml) must be protected by an .htaccess file like the
following.
> <Files ~ "^settings\.xml">
> Order allow,deny
> Deny from all
> </Files>
If you install SeedDMS for the first time continue with the database setup.
* Create a new database on your web server
e.g. for mysql:
create database seeddms;
* Create a new user for the database with all permissions on the new database
e.g. for mysql:
grant all privileges on seeddms.* to seeddms@localhost identified by 'secret';
(replace 'secret' with you own password)
* Optionally import `create_tables-innodb.sql` in the new database
e.g. for mysql:
> cat create_tables-innodb.sql | mysql -useeddms -p seeddms
This step can also be done by the install tool.
* create a file `ENABLE_INSTALL_TOOL` in the conf directory and point
your browser at http://hostname/seeddms/install
NOTE: UPDATING FROM A PREVIOUS VERSION OR SEEDDMS
As SeedDMS is a smooth continuation of LetoDMS there is no difference
in updating from LetoDMS or SeedDMS
- make a backup archive of your installation folder
- make a backup archive of your data folder
- dump your current database
- extract the SeedDMS archive to your web server
- edit the conf/settings.xml file to match your previuos settings
(you can even replace the file with your own one eventualy adding by hand
the missing new parameters)
- create a file `ENABLE_INSTALL_TOOL` in the conf directory and point
your browser at http://hostname/seeddms/install
The install tool will detect the version of your current SeedDMS installation
and run the required database updates.
3. Email Notification
---------------------
A notification system allows users to receive an email when a
document or folder is changed. This is an event-based mechanism that
notifies the user as soon as the change has been made and replaces the
cron mechanism originally developed. Any user that has read access to a
document or folder can subscribe to be notified of changes. Users that
have been assigned as reviewers or approvers for a document are
automatically added to the notification system for that document.
A new page has been created for users to assist with the management of
their notification subscriptions. This can be found in the "My Account"
section under "Notification List".
4. Nearly finished
------------------
Now point your browser to http://hostname/seeddms/index.php
and login with "admin" both as username and password.
After having logged in you should first choose "My Account" and
change the Administrator's password and email-address.
CONFIGURING MULTIPLE INSTANCES
==============================
Since version 3.0.0, SeedDMS can be set up to run several parallel instances
sharing the same source but each instance has its own configuration. This is
quite useful if you intend to host SeedDMS for several customers. This
approach still allows to have diffenrent version of SeedDMS installed
and will not force you to upgrade a customer instance, because other
instances are upgraded. A customer instance consists of
1. a directory containing mostly links to the SeedDMS source and a
configuration file
2. a directory containing the document content files
3. a database
1. Unpack the SeedDMS distribution
----------------------------------
Actually there is no need to set up the database at this point but it won't
hurt since you'll need one in the next step anyway. The sources of SeedDMS
can be anywhere you like. The do not have to be in you www-root. If you just
have access to your www-root directory, then put them there.
2. Setup the instance
---------------------
Unpack the files as described in the quick installation.
Create a directory in your www-root or use www-root for your instance. In the
second case, you will not be able to create a second instance, because each
instance needs its own directory.
Go into that directory create the following links (<seeddms-source> is the
directory of your initial SeedDMS intallation).
> src -> <seeddms-source>
> inc -> src/inc
> op -> src/op
> out -> src/out
> js -> src/js
> views -> src/views
> languages -> src/languages
> styles -> src/styles
> themes -> src/themes
> install -> src/install
> index.php -> src/index.php
> ln -s ../seeddms-<version> src
> ln -s src/inc inc
> ln -s src/op op
> ln -s src/out out
> ln -s src/js js
> ln -s src/views views
> ln -s src/languages languages
> ln -s src/styles styles
> ln -s src/themes themes
> ln -s src/install install
> ln -s src/index.php index.php
Create a new directory named conf and run the installation tool.
Creating the links as above has the advantage that you can easily switch
to a new version and go back if it is necessary. You could even run various
instances of SeedDMS using different versions.
3. Create a database and data store for each instance
-----------------------------------------------------
Create a database and data store for each instance and adjust the database
settings in conf/settings.xml or run the installation tool.
Point your web browser towards the index.php file in your new instance.
LICENSING
=========
SeedDMS is licensed unter GPLv2
Jumploader is licensed as stated by the author on th web site
<http://jumploader.com/>
-- Taken from web site of jumploader ---
You may use this software for free, however, you should not:
- Decompile binaries.
- Alter or replace class and/or resource files.
- Redistribute this software under different name or authority.
If you would like a customized version, I can do this for a fee. Don't hesitate to contact me with questions or comments.
Uwe Steinmann <info@seeddms.org>

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*********************************************
How to set up SeedDMS Preview on Synology NAS
*********************************************
Introduction
############
SeedDMS provides a function creating a preview of each document which is displayed on the document page.
Synology stations do not support the creation of the previews by default due to a missing Ghostscript implementation. Therefore
loading of a document page can use a lot of time because SeedDMS tries to create the missing preview images each time the document
page is being loaded.
Prerequisites
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In order to complete the steps outlined below, you must be able to carry out the following tasks:
* Use the command line and know essential commands
* Install a 3rd party package system and install packages using this system
To complete the installation, the following prerequisites on your Synology must be met:
* IPKG or OPKG (OPKG preferred) installed
* Pear Package SeedDMS_Preview already installed
Installation and configuration
##############################
In the following steps, you will first install the required packages, followed by doing the neccesary configurations. These steps
must be done on the terminal.
Install Ghostscript
***************************
The first step is to install Ghostscript to make ImageMagick capable of converting PDF files to images. Use IPKG or OPKG to complete this
step.
Make Ghostscript available to PHP
*****************************************
To check where Ghostscript is installed run *which gs* to get the installation path. Now check if this path is visible to PHP. To check this,
use phpinfo and find **_SERVER["PATH"]**. If you can't find /opt inside, PHP can't see applications installed there. You can now either try to
update the paths or just make a symlink.
To create the symlink, cd to /usr/bin and type *ln -s /opt/bin/gs gs*. Verify the created symlink.
Fix Ghostscript package bug
****************************************
Unfortunately the version delivered by OPKG has a bug, making Ghostscript failing to work properly. The bug requries fixing at the time
of the writing are the following:
* Resource path pointing to a wrong version (9.10 instead of 9.16)
First, fix the resource path. Go to /opt/bin and find **gs** in there. Open the file with VI. Change the GS_LIB path from */opt/share/ghostscript/9.10/Resource*
to */opt/share/ghostscript/9.16/Resource*. This will now allow Ghostscript to find it's files in the proper path.
Fix ImageMagick
********************
Not only Ghostscript is affected by bugs, the default configuration files are missing. Unfortunately some work is required here as well.
To check where ImageMagick looks for it's files, invoke the command *convert -debug configure logo: null:*. You will see some paths shown, these
are the paths where ImageMagic tries to locate it's configuration files. The first path shown will point to */usr/share/ImageMagick-6* followed by the
name of an XML file. At the very end of the output you will see which configuration file has been loaded, in the default setting there will be an error.
Point to */usr/share* and check if you can find the **ImageMagick-6** directory. If is not present, create it. Cd into the directory.
Next step is to fill the directory with files. Use the following list to download the files (credit goes to Thibault, http://blog.taillandier.name/2010/08/04/mediawiki-sur-son-nas-synology/).
* wget http://www.imagemagick.org/source/coder.xml
* wget http://www.imagemagick.org/source/colors.xml
* wget http://www.imagemagick.org/source/configure.xml
* wget http://www.imagemagick.org/source/delegates.xml
* wget http://www.imagemagick.org/source/english.xml
* wget http://www.imagemagick.org/source/francais.xml
* wget http://www.imagemagick.org/source/locale.xml
* wget http://www.imagemagick.org/source/log.xml
* wget http://www.imagemagick.org/source/magic.xml
* wget http://www.imagemagick.org/source/mime.xml
* wget http://www.imagemagick.org/source/policy.xml
* wget http://www.imagemagick.org/source/thresholds.xml
* wget http://www.imagemagick.org/source/type-ghostscript.xml
* wget http://www.imagemagick.org/source/type-windows.xml
* wget http://www.imagemagick.org/source/type.xml
Testing
*************
Now you should be ready to test. Put a PDF file in a directory, cd into this directory.
To test convert directly, invoke the following command (replace file.pdf with your filename, replace output.png with your desired name):
**convert file.pdf output.png**
If everything goes well you should now receive a png file which can be opened. There may be a warning message about iCCP which can be ignored.
If you want to test Ghostcript as well, invoke the follwing command:
**gs -sDEVICE=pngalpha -sOutputFile=output.png -r144 file.pdf**
This command should go through without any errors and as well output a png file.
If the tests above are successful, you are ready to use SeedDMS Preview. Go to your SeedDMS Installation and open a folder. For the first test you
may take a folder with less files in it. Be patient while the previews are generated. You may check the process using *top* on the terminal.
At the end your document page should show the previews like shown below:
.. figure:: preview.png
:alt: Document previews
:scale: 75%

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