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 Data Recovery

On 2017-04-04 we had a rather major disk malfunction that caused data loss. The data on this site was originally restored from a 2016-11-05 backup, but with wiki pages changes since then recreated from the search index.

Note that files and images uploaded since November are still missing and will need to be re-uploaded and reattached to the pages by hand.

Please let us know if you find anything else missing or broken due to this outage. We thank you for your patience.

Define an archive that can be downloaded

Plugin Archive Builder


Wikis are a great central repository for everyone to access the information. However, when used within the boundaries of an organization, it may be hard to provide only a portion of the information to an external group of people. Although it may be possible through assigning permissions, it still requires to grant them access to the wiki, provide them with accounts and walk them through the process of finding what they need. Just sending them a zip with the information they need might just be easier. This wiki plugin, introduced in Tiki5, does just that. Through arguments, it allows to define the content of an archive. Once rendered, it displays a Download archive button to generate the archive on the fly.

 note


A new option to create PDF's from within Tiki was introduced and available in Tiki16 based on a PHP library that works even on shared hosting without full root access. See mPDF



Requirements

The print as PDF mechanism uses the standard wiki print feature. However, the PDF generation is done through external HTML to PDF tools. These must be enabled and configured. Here are the alternatives. Chose one:
  1. Webkit wkhtmltopdf
    • Download wkhtmltopdf and place the executable somewhere on the host. Make sure it is executable from the web server.
    • Set PDF from URL to Webkit (preference: print_pdf_from_url set to webkit)
    • Set Webkit path to the full path to your executable. For example /home/doc.tiki.org/webkit/wkhtmltopdf.(preference: print_pdf_webkit_path)
  2. Webservice
    • Set PDF from URL to Webservice (preference: print_pdf_from_url set to webservice)
    • Set Webservice URL to the service location. The webservice must take the URL as the query string. A sample PHP script is available below. (preference: print_pdf_webservice_url)

 Note

In version tiki<5.0, these preferences must be set directly in the database (do not forget to clear the cache to see them in tiki)

 Note

You may find these settings under Admin Home (tiki-admin.php), and then in the Configuration search box, enter "pdf" (no quotes). After submitting, you will see "Not Found" next to each setting; ignore that (it is saying that the Admin Panel for that setting cannot be found).

Why is configuration required?
wkhtmltopdf is written in C++ and there are different packages for Windows/Linux/MacOSX and thus it's better to install separately.

Moreover, some servers may not allow shell execution, which is required. This can be worked around by installing it on a different server and accessing it remotely.

Access rights

Because the content of the page is accessed through a URL, access rights must be managed correctly. If permissions protect the page from being visible to anonymous or plugins render it differently for them, an additional feature must be enabled.

The Token Access feature allows the archive builder to generate tokens bound to a specific URL. The PDF generator will then include the token as part of the URL. Doing so will grant the same groups to the PDF generator as the groups used by the archive requester. By default, the token will be available for 30 seconds.

Parameters

Introduced in Tiki 5. Required parameters are in bold.
Preferences required: wikiplugin_archivebuilder
Parameters Accepted Values Description Default Since
(body of plugin) Description of the archive content. Multiple handlers are available for content types. One per line. Ex: page-as-pdf:some-folder/foo.pdf:HomePage , tracker-attachments:target-folder/:3435
name Upon download, the name of the file that will be provided. 5.0


Body

The body of the plugin simply contains a list of rules to determine which file to create and where to take the content from. Each line is independent. Arguments are separated by colons. The first argument indicates how to treat the rest of the line. The following tokens may be used:
  • page-as-pdf to take render the content of a page as a pdf.
    • First argument is the name and location of the PDF in the zip file.
    • Second argument is the page name.
  • tracker-attachments to collect all attachments on a tracker item and store them in a folder.
    • First argument is the name of the folder in which files will be added.
    • Second argument is the ID of the tracker item.
  • tracker-files to collect all files, from the file gallery, on a tracker item and store them in folders.
    • First argument is the name of the base folder in which files will be added, groupped in directories with the name of the field
    • Second argument is the ID of the tracker item.

Example

Sample usage
{ARCHIVEBUILDER(name=DF120-Summary.zip)}
page-as-pdf:DF120/Vision.pdf:VisionDF120
page-as-pdf:DF120/Team.pdf:TeamDF120
tracker-attachments:DF120/Requirements/:2232
{ARCHIVEBUILDER}


The output of the available plugin might look like:
  • DF120-Summary.zip
    • DF120/
      • Requirements/
        • performance.doc
        • mockup.png
      • Vision.pdf
      • Team.pdf
    • manifest.txt (automatically generated, containing the list of files)

Sample webservice

generate_pdf.php
<?php

$query = $_SERVER['QUERY_STRING'];

if( ! empty( $query ) ) {
        header( 'Content-Type: application/pdf' );
        $query = escapeshellarg( urldecode( $query ) );
        echo `../wkhtmltopdf-i386 $query -`;
}

?>

Aliases

ArchiveBuilder | Archive Builder | Plugin Archive Builder | Plugin ArchiveBuilder

doc.tiki.org


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