Difference between revisions of "API:EPrints/DataObj/Document"

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'''EPrints::DataObj::Document''' - A single format of a record.
 
'''EPrints::DataObj::Document''' - A single format of a record.
  
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<h4><span style='display:none'>User Comments</span></h4>
 
<!-- Edit below this comment -->
 
 
 
<!-- Pod2Wiki=head_synopsis --></div>
 
==SYNOPSIS==
 
  Inherrits all methods from EPrints::DataObj.
 
 
 
  # create a new document on $eprint
 
  my $doc_data = {
 
    _parent =&gt; $eprint,
 
    eprintid =&gt; $eprint-&gt;get_id,
 
  };
 
  my $doc_ds = $handle-&gt;get_dataset( 'document' );
 
  my $document = $doc_ds-&gt;create_object( $handle, $doc_data );
 
 
 
  # Add files to the document 
 
  $success = $doc-&gt;add_file( $file, $filename, [$preserve_path] );
 
  $success = $doc-&gt;upload( $filehandle, $filename [, $preserve_path [, $filesize ] ] );
 
  $success = $doc-&gt;upload_archive( $filehandle, $filename, $archive_format );
 
  $success = $doc-&gt;add_archive( $file, $archive_format );
 
  $success = $doc-&gt;add_directory( $directory );
 
  $success = $doc-&gt;upload_url( $url );
 
 
 
  # get an existing document
 
  $document = $handle-&gt;get_document( $doc_id );
 
  # or
 
  foreach my $doc ( $eprint-&gt;get_all_documents ) { ... }
 
 
 
  # eprint to which this document belongs
 
  $eprint = $doc-&gt;get_eprint;
 
 
 
  # delete a document object *forever*:
 
  $success = $doc-&gt;remove;
 
 
 
  $url = $doc-&gt;get_url( [$file] );
 
  $path = $doc-&gt;local_path;
 
  %files = $doc-&gt;files;
 
 
 
  # delete a file
 
  $success = $doc-&gt;remove_file( $filename );
 
  # delete all files
 
  $success = $doc-&gt;remove_all_files;
 
 
 
  # change the file which is used as the URL for the document.
 
  $doc-&gt;set_main( $main_file );
 
 
 
  # icons and previews
 
  $xhtml = $doc-&gt;render_icon_link( %opts );
 
  $xhtml = $doc-&gt;render_preview_link( %opts );
 
 
 
 
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<h4><span style='display:none'>User Comments</span></h4>
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===security (namedset)===
 
===security (namedset)===
  
The security type of this document - who can view it. One of the types of the namedset "security".
+
The security type of this document - who can view it. One of the types of the dataset "security".
  
 
<div style='background-color: #e8e8f; margin: 0.5em 0em 1em 0em; border: solid 1px #cce;  padding: 0em 1em 0em 1em; font-size: 80%; '>
 
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Line 150: Line 98:
  
  
<!-- Pod2Wiki=item_content --></div>
+
<!-- Pod2Wiki=item_main --></div>
===content (namedset)===
+
===main (text)===
  
The type of content. Conceptual type, no format. ie. Supporting Material or  published version. Values from namedset "content"
+
The file which we should link to. For something like a PDF file this is the only file. For an HTML document with images it would be the name of the actual HTML file.
  
 
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Line 160: Line 108:
  
  
<!-- Pod2Wiki=item_license --></div>
+
<!-- Pod2Wiki=item_documents --></div>
===license (namedset)===
+
===documents (subobject, multiple)===
  
The type of license for the document. Such as GFDL or creative commons. Values from namedset "licenses"
+
A virtual field which represents the list of Documents which are part of this record.
  
 
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Line 170: Line 118:
  
  
<!-- Pod2Wiki=item_main --></div>
+
<!-- Pod2Wiki=head_methods --></div>
===main (text)===
+
==METHODS==
 +
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 +
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 +
<!-- Edit below this comment -->
  
The file which we should link to. For something like a PDF file this is the only file. For an HTML document with images it would be the name of the actual HTML file.
+
 
 +
<!-- Pod2Wiki=item_get_system_field_info --></div>
 +
===$metadata = EPrints::DataObj::Document-&gt;get_system_field_info===
 +
 
 +
Return an array describing the system metadata of the Document dataset.
  
 
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<!-- Pod2Wiki=item_documents --></div>
+
<!-- Pod2Wiki=item_get_dataset_id --></div>
===documents (subobject, multiple)===
+
===$dataset = EPrints::DataObj::Document-&gt;get_dataset_id===
  
A virtual field which represents the list of Documents which are part of this record.
+
Returns the id of the [[API:EPrints/DataSet|EPrints::DataSet]] object to which this record belongs.
  
 
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Line 190: Line 145:
  
  
<!-- Pod2Wiki=head_methods --></div>
+
<!-- Pod2Wiki=item_get_defaults --></div>
==METHODS==
+
===$defaults = EPrints::DataObj::Document-&gt;get_defaults( $session, $data )===
 +
 
 +
Return default values for this object based on the starting data.
 +
 
 
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Attempt to clone this document. Both the document metadata and the actual files. The clone will be associated with the given EPrint.
 
Attempt to clone this document. Both the document metadata and the actual files. The clone will be associated with the given EPrint.
 +
 +
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 +
<h4><span style='display:none'>User Comments</span></h4>
 +
<!-- Edit below this comment -->
 +
 +
 +
<!-- Pod2Wiki=item_remove --></div>
 +
===$success = $doc-&gt;remove===
 +
 +
Attempt to completely delete this document
  
 
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This is a synonym for get_parent().
 
This is a synonym for get_parent().
 +
 +
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 +
<h4><span style='display:none'>User Comments</span></h4>
 +
<!-- Edit below this comment -->
 +
 +
 +
<!-- Pod2Wiki=item_get_baseurl --></div>
 +
===$url = $doc-&gt;get_baseurl( [$staff] )===
 +
 +
Return the base URL of the document. Overrides the stub in DataObj. $staff is currently ignored.
  
 
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===$url = $doc-&gt;get_url( [$file] )===
 
===$url = $doc-&gt;get_url( [$file] )===
  
Return the full URL of the document.  
+
Return the full URL of the document. Overrides the stub in DataObj.
  
 
If file is not specified then the "main" file is used.
 
If file is not specified then the "main" file is used.
Line 271: Line 249:
  
  
<!-- Pod2Wiki=item_remove_all_files --></div>
+
<!-- Pod2Wiki=item_set_main --></div>
===$success = $doc-&gt;remove_all_files===
+
===$doc-&gt;set_main( $main_file )===
  
Attempt to remove all files associated with this document.
+
Sets the main file. Won't affect the database until a $doc-&gt;commit().
  
 
<div style='background-color: #e8e8f; margin: 0.5em 0em 1em 0em; border: solid 1px #cce;  padding: 0em 1em 0em 1em; font-size: 80%; '>
 
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<!-- Pod2Wiki=item_set_main --></div>
+
<!-- Pod2Wiki=item_get_main --></div>
===$doc-&gt;set_main( $main_file )===
+
===$filename = $doc-&gt;get_main===
  
Sets the main file. Won't affect the database until a $doc-&gt;commit().
+
Return the name of the main file in this document.
  
This checks the file exists, so is more than an alias for get_value.
+
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 +
<h4><span style='display:none'>User Comments</span></h4>
 +
<!-- Edit below this comment -->
 +
 
 +
 
 +
<!-- Pod2Wiki=item_set_format --></div>
 +
===$doc-&gt;set_format( $format )===
 +
 
 +
Set format. Won't affect the database until a commit(). Just an alias for $doc-&gt;set_value( "format" , $format );
 +
 
 +
<div style='background-color: #e8e8f; margin: 0.5em 0em 1em 0em; border: solid 1px #cce;  padding: 0em 1em 0em 1em; font-size: 80%; '>
 +
<h4><span style='display:none'>User Comments</span></h4>
 +
<!-- Edit below this comment -->
 +
 
 +
 
 +
<!-- Pod2Wiki=item_set_format_desc --></div>
 +
===$doc-&gt;set_format_desc( $format_desc )===
 +
 
 +
Set the format description.  Won't affect the database until a commit(). Just an alias for $doc-&gt;set_value( "format_desc" , $format_desc );
  
 
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If $preserve_path then keep the filename as is (including subdirs and spaces)
 
If $preserve_path then keep the filename as is (including subdirs and spaces)
 +
 +
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 +
<h4><span style='display:none'>User Comments</span></h4>
 +
<!-- Edit below this comment -->
 +
 +
 +
<!-- Pod2Wiki=item_sanitise --></div>
 +
===$cleanfilename = sanitise( $filename )===
 +
 +
Return just the filename (no leading path) and convert any naughty characters to underscore.
  
 
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This (by default) uses wget. The details can be configured in SystemSettings.
 
This (by default) uses wget. The details can be configured in SystemSettings.
 +
 +
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 +
<h4><span style='display:none'>User Comments</span></h4>
 +
<!-- Edit below this comment -->
 +
 +
 +
<!-- Pod2Wiki=item_commit --></div>
 +
===$success = $doc-&gt;commit===
 +
 +
Commit any changes that have been made to this object to the database.
 +
 +
Calls "set_document_automatic_fields" in the ArchiveConfig first to set any automatic fields that may be needed.
 +
 +
<div style='background-color: #e8e8f; margin: 0.5em 0em 1em 0em; border: solid 1px #cce;  padding: 0em 1em 0em 1em; font-size: 80%; '>
 +
<h4><span style='display:none'>User Comments</span></h4>
 +
<!-- Edit below this comment -->
 +
 +
 +
<!-- Pod2Wiki=item_validate --></div>
 +
===$problems = $doc-&gt;validate( [$for_archive] )===
 +
 +
Return an array of XHTML DOM objects describing validation problems with the entire document, including the metadata and repository config specific requirements.
 +
 +
A reference to an empty array indicates no problems.
 +
 +
<div style='background-color: #e8e8f; margin: 0.5em 0em 1em 0em; border: solid 1px #cce;  padding: 0em 1em 0em 1em; font-size: 80%; '>
 +
<h4><span style='display:none'>User Comments</span></h4>
 +
<!-- Edit below this comment -->
 +
 +
 +
<!-- Pod2Wiki=item_get_type --></div>
 +
===$type = $doc-&gt;get_type===
 +
 +
Return the type of this document.
 +
 +
<div style='background-color: #e8e8f; margin: 0.5em 0em 1em 0em; border: solid 1px #cce;  padding: 0em 1em 0em 1em; font-size: 80%; '>
 +
<h4><span style='display:none'>User Comments</span></h4>
 +
<!-- Edit below this comment -->
 +
 +
 +
<!-- Pod2Wiki=item_files_modified --></div>
 +
===$doc-&gt;files_modified===
 +
 +
This method does all the things that need doing when a file has been modified.
 +
 +
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 +
<h4><span style='display:none'>User Comments</span></h4>
 +
<!-- Edit below this comment -->
 +
 +
 +
<!-- Pod2Wiki=item_rehash --></div>
 +
===$doc-&gt;rehash===
 +
 +
Recalculate the hash value of the document. Uses MD5 of the files (in alphabetic order), but can use user specified hashing function instead.
 +
 +
<div style='background-color: #e8e8f; margin: 0.5em 0em 1em 0em; border: solid 1px #cce;  padding: 0em 1em 0em 1em; font-size: 80%; '>
 +
<h4><span style='display:none'>User Comments</span></h4>
 +
<!-- Edit below this comment -->
 +
 +
 +
<!-- Pod2Wiki=item_make_indexcodes --></div>
 +
===$doc = $doc-&gt;make_indexcodes()===
 +
 +
Make the indexcodes document for this document. Returns the generated document or undef on failure.
 +
 +
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 +
<h4><span style='display:none'>User Comments</span></h4>
 +
<!-- Edit below this comment -->
 +
 +
 +
<!-- Pod2Wiki=item_remove_indexcodes --></div>
 +
===$doc = $doc-&gt;remove_indexcodes()===
 +
 +
Remove any documents containing index codes for this document. Returns the number of documents removed.
 +
 +
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 +
<h4><span style='display:none'>User Comments</span></h4>
 +
<!-- Edit below this comment -->
 +
 +
 +
<!-- Pod2Wiki=item_cache_file --></div>
 +
===$filename = $doc-&gt;cache_file( $suffix );===
 +
 +
Return a cache filename for this document with the givven suffix.
 +
 +
<div style='background-color: #e8e8f; margin: 0.5em 0em 1em 0em; border: solid 1px #cce;  padding: 0em 1em 0em 1em; font-size: 80%; '>
 +
<h4><span style='display:none'>User Comments</span></h4>
 +
<!-- Edit below this comment -->
 +
 +
 +
<!-- Pod2Wiki=item_render_icon_link --></div>
 +
===$frag = $doc-&gt;render_icon_link( %opts )===
 +
 +
Render a link to the icon for this document.
 +
 +
Options:
  
 
<div style='background-color: #e8e8f; margin: 0.5em 0em 1em 0em; border: solid 1px #cce;  padding: 0em 1em 0em 1em; font-size: 80%; '>
 
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Line 399: Line 501:
  
 
Show thumbnail/preview on all docs if poss.
 
Show thumbnail/preview on all docs if poss.
 +
 +
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 +
<h4><span style='display:none'>User Comments</span></h4>
 +
<!-- Edit below this comment -->
 +
 +
 +
<!-- Pod2Wiki=item_render_preview_link --></div>
 +
===$frag = $doc-&gt;render_preview_link( %opts )===
 +
 +
Render a link to the preview for this document (if available) using a lightbox.
 +
 +
Options:
  
 
<div style='background-color: #e8e8f; margin: 0.5em 0em 1em 0em; border: solid 1px #cce;  padding: 0em 1em 0em 1em; font-size: 80%; '>
 
<div style='background-color: #e8e8f; margin: 0.5em 0em 1em 0em; border: solid 1px #cce;  padding: 0em 1em 0em 1em; font-size: 80%; '>

Revision as of 16:34, 12 February 2010


EPrints 3 Reference: Directory Structure - Metadata Fields - Repository Configuration - XML Config Files - XML Export Format - EPrints data structure - Core API - Data Objects


API: Core API

Latest Source Code (3.3, 3.2) | Revision Log | Before editing this page please read Pod2Wiki


NAME

EPrints::DataObj::Document - A single format of a record.

User Comments


DESCRIPTION

Document represents a single format of an EPrint (eg. PDF) - the actual file(s) rather than the metadata.

This class is a subclass of DataObj, with the following metadata fields:

User Comments


docid (text)

The unique ID of the document. This is a string of the format 123-02 where the first number is the eprint id and the second is the document number within that eprint.

This should probably have been and "int" but isn't. I later version of EPrints may change this.

User Comments


eprintid (itemref)

The id number of the eprint to which this document belongs.

User Comments


placement (int)

Placement of the document - the order documents should be shown in.

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format (namedset)

The format of this document. One of the types of the dataset "document".

User Comments


formatdesc (text)

An additional description of this document. For example the specific version of a format.

User Comments


language (namedset)

The ISO ID of the language of this document. The default configuration of EPrints does not set this.

User Comments


security (namedset)

The security type of this document - who can view it. One of the types of the dataset "security".

User Comments


main (text)

The file which we should link to. For something like a PDF file this is the only file. For an HTML document with images it would be the name of the actual HTML file.

User Comments


documents (subobject, multiple)

A virtual field which represents the list of Documents which are part of this record.

User Comments


METHODS

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$metadata = EPrints::DataObj::Document->get_system_field_info

Return an array describing the system metadata of the Document dataset.

User Comments


$dataset = EPrints::DataObj::Document->get_dataset_id

Returns the id of the EPrints::DataSet object to which this record belongs.

User Comments


$defaults = EPrints::DataObj::Document->get_defaults( $session, $data )

Return default values for this object based on the starting data.

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$newdoc = $doc->clone( $eprint )

Attempt to clone this document. Both the document metadata and the actual files. The clone will be associated with the given EPrint.

User Comments


$success = $doc->remove

Attempt to completely delete this document

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$eprint = $doc->get_eprint

Return the EPrint this document is associated with.

This is a synonym for get_parent().

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$url = $doc->get_baseurl( [$staff] )

Return the base URL of the document. Overrides the stub in DataObj. $staff is currently ignored.

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$boolean = $doc->is_public()

True if this document has no security set and is in the live archive.

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$url = $doc->get_url( [$file] )

Return the full URL of the document. Overrides the stub in DataObj.

If file is not specified then the "main" file is used.

User Comments


$path = $doc->local_path

Return the full path of the directory where this document is stored in the filesystem.

User Comments


%files = $doc->files

Return a hash, the keys of which are all the files belonging to this document (relative to $doc->local_path). The values are the sizes of the files, in bytes.

User Comments


$success = $doc->remove_file( $filename )

Attempt to remove the given file. Give the filename as it is returned by get_files().

User Comments


$doc->set_main( $main_file )

Sets the main file. Won't affect the database until a $doc->commit().

User Comments


$filename = $doc->get_main

Return the name of the main file in this document.

User Comments


$doc->set_format( $format )

Set format. Won't affect the database until a commit(). Just an alias for $doc->set_value( "format" , $format );

User Comments


$doc->set_format_desc( $format_desc )

Set the format description. Won't affect the database until a commit(). Just an alias for $doc->set_value( "format_desc" , $format_desc );

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$success = $doc->upload( $filehandle, $filename [, $preserve_path [, $filesize ] ] )

Upload the contents of the given file handle into this document as the given filename.

If $preserve_path then make any subdirectories needed, otherwise place this in the top level.

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$success = $doc->add_file( $file, $filename, [$preserve_path] )

$file is the full path to a file to be added to the document, with name $filename.

If $preserve_path then keep the filename as is (including subdirs and spaces)

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$cleanfilename = sanitise( $filename )

Return just the filename (no leading path) and convert any naughty characters to underscore.

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$success = $doc->upload_archive( $filehandle, $filename, $archive_format )

Upload the contents of the given archive file. How to deal with the archive format is configured in SystemSettings.

(In case the over-loading of the word "archive" is getting confusing, in this context we mean ".zip" or ".tar.gz" archive.)

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$success = $doc->add_archive( $file, $archive_format )

$file is the full path to an archive file, eg. zip or .tar.gz

This function will add the contents of that archive to the document.

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$success = $doc->add_directory( $directory )

Upload the contents of $directory to this document. This will not set the main file.

This method expects $directory to have a trailing slash (/).

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$success = $doc->upload_url( $url )

Attempt to grab stuff from the given URL. Grabbing HTML stuff this way is always problematic, so (by default): only relative links will be followed and only links to files in the same directory or subdirectory will be followed.

This (by default) uses wget. The details can be configured in SystemSettings.

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$success = $doc->commit

Commit any changes that have been made to this object to the database.

Calls "set_document_automatic_fields" in the ArchiveConfig first to set any automatic fields that may be needed.

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$problems = $doc->validate( [$for_archive] )

Return an array of XHTML DOM objects describing validation problems with the entire document, including the metadata and repository config specific requirements.

A reference to an empty array indicates no problems.

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$type = $doc->get_type

Return the type of this document.

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$doc->files_modified

This method does all the things that need doing when a file has been modified.

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$doc->rehash

Recalculate the hash value of the document. Uses MD5 of the files (in alphabetic order), but can use user specified hashing function instead.

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$doc = $doc->make_indexcodes()

Make the indexcodes document for this document. Returns the generated document or undef on failure.

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$doc = $doc->remove_indexcodes()

Remove any documents containing index codes for this document. Returns the number of documents removed.

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$filename = $doc->cache_file( $suffix );

Return a cache filename for this document with the givven suffix.

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$frag = $doc->render_icon_link( %opts )

Render a link to the icon for this document.

Options:

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new_window => 1

Make link go to _blank not current window.

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preview => 1

If possible, provide a preview pop-up.

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public => 0

Show thumbnail/preview only on public docs.

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public => 1

Show thumbnail/preview on all docs if poss.

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$frag = $doc->render_preview_link( %opts )

Render a link to the preview for this document (if available) using a lightbox.

Options:

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caption => $frag

XHTML fragment to use as the caption, defaults to empty.

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set => "foo"

The name of the set this document belongs to, defaults to none (preview won't be shown as part of a set).

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