Moodle PHP Documentation 4.5
Moodle 4.5dev (Build: 20240606) (d3ae1391abe)
file_info_context_system Class Reference

Represents the system context in the tree navigated by file_browser. More...

Inheritance diagram for file_info_context_system:
file_info_context_coursecat file_info

Public Member Functions

 __construct ($browser, $context)
 Constructor.
 
 copy_to_pathname ($pathname)
 Copy content of this file to local storage, overriding current file if needed.
 
 copy_to_storage ($filerecord)
 Copy content of this file to local storage, overriding current file if needed.
 
 count_non_empty_children ($extensions=' *', $limit=1)
 Returns the number of children which are either files matching the specified extensions or folders containing at least one such file.
 
 create_directory ($newdirname, $userid=NULL)
 Create new directory, may throw exception - make sure params are valid.
 
 create_file_from_pathname ($newfilename, $pathname, $userid=NULL)
 Create new file from pathname - make sure params are valid.
 
 create_file_from_storedfile ($newfilename, $fid, $userid=NULL)
 Create new file from stored file - make sure params are valid.
 
 create_file_from_string ($newfilename, $content, $userid=NULL)
 Create new file from string - make sure params are valid.
 
 delete ()
 Delete file, make sure file is deletable first.
 
 get_author ()
 Returns the author name of the file.
 
 get_children ()
 Returns list of children.
 
 get_file_info ($component, $filearea, $itemid, $filepath, $filename)
 Return information about this specific part of context level.
 
 get_filesize ()
 Returns file size in bytes, null for directories.
 
 get_license ()
 Returns the license type of the file.
 
 get_mimetype ()
 Returns mimetype.
 
 get_non_empty_children ($extensions=' *')
 Returns list of children which are either files matching the specified extensions or folders that contain at least one such file.
 
 get_params ()
 Returns list of standard virtual file/directory identification.
 
 get_params_rawencoded ()
 Returns array of url encoded params.
 
 get_parent ()
 Returns parent file_info instance.
 
 get_readable_fullname ()
 Returns the localised human-readable name of the file together with virtual path.
 
 get_sortorder ()
 Returns the sort order of the file.
 
 get_source ()
 Returns the source of the file.
 
 get_status ()
 Returns file status flag.
 
 get_timecreated ()
 Returns time created unix timestamp if known.
 
 get_timemodified ()
 Returns time modified unix timestamp if known.
 
 get_url ($forcedownload=false, $https=false)
 Returns file download url.
 
 get_visible_name ()
 Returns localised visible name.
 
 is_directory ()
 Whether or not this is a directory.
 
 is_empty_area ()
 Is this info area and is it "empty"? Are there any files in subfolders?
 
 is_external_file ()
 Whether or not this is a external resource.
 
 is_readable ()
 Whether or not I can read content of this file or enter directory.
 
 is_writable ()
 Whether or not new files or directories can be added.
 

Protected Member Functions

 build_search_files_sql ($extensions, $prefix=null)
 Builds SQL sub query (WHERE clause) for selecting files with the specified extensions.
 
 get_area_backup_course ($itemid, $filepath, $filename)
 Gets a stored file for the backup course filearea directory.
 
 get_area_coursecat_description ($itemid, $filepath, $filename)
 Return a file from course category description area.
 
 get_categories ()
 Finds accessible and non-accessible direct subcategories.
 
 get_child_course ($course)
 Returns the file info element for a given course or null if course is not accessible.
 
 get_courses ($hiddencats)
 List of courses in this category and in hidden subcategories.
 

Protected Attributes

file_browser $browser
 File browser instance.
 
stdClass $category
 Category object.
 
context $context
 File context.
 

Detailed Description

Represents the system context in the tree navigated by file_browser.

License
http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later

Constructor & Destructor Documentation

◆ __construct()

file_info_context_system::__construct ( $browser,
$context )

Constructor.

Parameters
file_browser$browserfile_browser instance
stdClass$contextcontext object

Reimplemented from file_info.

Member Function Documentation

◆ build_search_files_sql()

file_info::build_search_files_sql ( $extensions,
$prefix = null )
protectedinherited

Builds SQL sub query (WHERE clause) for selecting files with the specified extensions.

If $extensions == '*' (any file), the result is array('', array()) otherwise the result is something like array('AND filename ...', array(...))

Parameters
string | array$extensions- either '*' or array of lowercase extensions, i.e. array('.gif','.jpg')
string$prefixprefix for DB table files in the query (empty by default)
Return values
arrayof two elements: $sql - sql where clause and $params - array of parameters

◆ copy_to_pathname()

file_info::copy_to_pathname ( $pathname)
inherited

Copy content of this file to local storage, overriding current file if needed.

Todo
MDL-31068 implement move() rename() unzip() zip()
Parameters
string$pathnamereal local full file name
Return values
booleansuccess

Reimplemented in file_info_stored.

◆ copy_to_storage()

file_info::copy_to_storage ( $filerecord)
inherited

Copy content of this file to local storage, overriding current file if needed.

Parameters
array | stdClass$filerecordcontains contextid, component, filearea, itemid, filepath, filename and optionally other attributes of the new file
Return values
boolsuccess

Reimplemented in file_info_stored.

◆ count_non_empty_children()

file_info_context_coursecat::count_non_empty_children ( $extensions = '*',
$limit = 1 )
inherited

Returns the number of children which are either files matching the specified extensions or folders containing at least one such file.

Parameters
string | array$extensions,forexample '*' or array('.gif','.jpg')
int$limitstop counting after at least $limit non-empty children are found
Return values
int

Reimplemented from file_info.

◆ create_directory()

file_info::create_directory ( $newdirname,
$userid = NULL )
inherited

Create new directory, may throw exception - make sure params are valid.

Parameters
string$newdirnamename of new directory
int$useridid of author, default $USER->id
Return values
file_infonew directory

Reimplemented in file_info_stored.

◆ create_file_from_pathname()

file_info::create_file_from_pathname ( $newfilename,
$pathname,
$userid = NULL )
inherited

Create new file from pathname - make sure params are valid.

Parameters
string$newfilenamename of new file
string$pathnamelocation of file
int$useridid of author, default $USER->id
Return values
file_infonew file

Reimplemented in file_info_stored.

◆ create_file_from_storedfile()

file_info::create_file_from_storedfile ( $newfilename,
$fid,
$userid = NULL )
inherited

Create new file from stored file - make sure params are valid.

Parameters
string$newfilenamename of new file
int | stored_file$fidid or stored_file of file
int$useridid of author, default $USER->id
Return values
file_infonew file

Reimplemented in file_info_stored.

◆ create_file_from_string()

file_info::create_file_from_string ( $newfilename,
$content,
$userid = NULL )
inherited

Create new file from string - make sure params are valid.

Parameters
string$newfilenamename of new file
string$contentof file
int$useridid of author, default $USER->id
Return values
file_infonew file

Reimplemented in file_info_stored.

◆ delete()

file_info::delete ( )
inherited

Delete file, make sure file is deletable first.

Return values
boolsuccess

Reimplemented in file_info_stored.

◆ get_area_backup_course()

file_info_context_system::get_area_backup_course ( $itemid,
$filepath,
$filename )
protected

Gets a stored file for the backup course filearea directory.

Parameters
int$itemiditem ID
string$filepathfile path
string$filenamefile name
Return values
file_info|nullfile_info instance or null if not found or access not allowed

◆ get_area_coursecat_description()

file_info_context_coursecat::get_area_coursecat_description ( $itemid,
$filepath,
$filename )
protectedinherited

Return a file from course category description area.

Parameters
int$itemiditem ID
string$filepathfile path
string$filenamefile name
Return values
fileinfo|null

◆ get_author()

file_info::get_author ( )
inherited

Returns the author name of the file.

Return values
stringauthor name or null

Reimplemented in file_info_stored.

◆ get_categories()

file_info_context_coursecat::get_categories ( )
protectedinherited

Finds accessible and non-accessible direct subcategories.

Return values
array[$coursecats, $hiddencats] - child categories that are visible to the current user and not visible

◆ get_child_course()

file_info_context_coursecat::get_child_course ( $course)
protectedinherited

Returns the file info element for a given course or null if course is not accessible.

Parameters
stdClass$coursemay contain context fields for preloading
Return values
file_info_context_course|null

◆ get_children()

file_info_context_coursecat::get_children ( )
inherited

Returns list of children.

Return values
arrayof file_info instances

Reimplemented from file_info.

◆ get_courses()

file_info_context_coursecat::get_courses ( $hiddencats)
protectedinherited

List of courses in this category and in hidden subcategories.

Parameters
array$hiddencatslist of categories that are hidden from current user and returned by get_categories()
Return values
arraylist of courses

◆ get_file_info()

file_info_context_system::get_file_info ( $component,
$filearea,
$itemid,
$filepath,
$filename )

Return information about this specific part of context level.

Parameters
string$componentcomponent
string$fileareafile area
int$itemiditem ID
string$filepathfile path
string$filenamefile name
Return values
file_info|nullfile_info instance or null if not found or access not allowed

Reimplemented from file_info_context_coursecat.

◆ get_filesize()

file_info::get_filesize ( )
inherited

Returns file size in bytes, null for directories.

Return values
intbytes or null if not known

Reimplemented in file_info_stored.

◆ get_license()

file_info::get_license ( )
inherited

Returns the license type of the file.

Return values
stringlicense short name or null

Reimplemented in file_info_stored.

◆ get_mimetype()

file_info::get_mimetype ( )
inherited

Returns mimetype.

Return values
stringmimetype or null if not known

Reimplemented in file_info_stored.

◆ get_non_empty_children()

file_info::get_non_empty_children ( $extensions = '*')
inherited

Returns list of children which are either files matching the specified extensions or folders that contain at least one such file.

It is recommended to overwrite this function so it uses a proper SQL query and does not create unnecessary file_info objects (might require a lot of time and memory usage on big sites).

Parameters
string | array$extensions,either'*' or array of lowercase extensions, i.e. array('.gif','.jpg')
Return values
arrayof file_info instances

Reimplemented in book_file_info, data_file_info_container, file_info_area_course_legacy, file_info_context_course, file_info_context_module, file_info_stored, forum_file_info_container, glossary_file_info_container, imscp_file_info, mod_lesson_file_info, workshop_file_info_overallfeedback_container, and workshop_file_info_submissions_container.

◆ get_params()

file_info::get_params ( )
inherited

Returns list of standard virtual file/directory identification.

The difference from stored_file parameters is that null values are allowed in all fields

Return values
arraywith keys contextid, component, filearea, itemid, filepath and filename

Reimplemented in book_file_info, data_file_info_container, file_info_area_backup_section, file_info_area_course_section, file_info_stored, forum_file_info_container, glossary_file_info_container, imscp_file_info, mod_lesson_file_info, workshop_file_info_overallfeedback_container, and workshop_file_info_submissions_container.

◆ get_params_rawencoded()

file_info::get_params_rawencoded ( )
inherited

Returns array of url encoded params.

Return values
arraywith numeric keys

◆ get_parent()

file_info_context_system::get_parent ( )

Returns parent file_info instance.

Return values
file_info|nullfile_info instance or null for root

Reimplemented from file_info_context_coursecat.

◆ get_readable_fullname()

file_info::get_readable_fullname ( )
inherited

Returns the localised human-readable name of the file together with virtual path.

See also
file_info_stored\get_readable_fullname()
Return values
string

Reimplemented in file_info_stored.

◆ get_sortorder()

file_info::get_sortorder ( )
inherited

Returns the sort order of the file.

Return values
int

Reimplemented in file_info_stored.

◆ get_source()

file_info::get_source ( )
inherited

Returns the source of the file.

Return values
stringa source url or null

Reimplemented in file_info_stored.

◆ get_status()

file_info::get_status ( )
inherited

Returns file status flag.

Return values
int0 means file OK, anything else is a problem and file can not be used

Reimplemented in file_info_stored.

◆ get_timecreated()

file_info::get_timecreated ( )
inherited

Returns time created unix timestamp if known.

Return values
inttimestamp or null

Reimplemented in file_info_stored.

◆ get_timemodified()

file_info::get_timemodified ( )
inherited

Returns time modified unix timestamp if known.

Return values
inttimestamp or null

Reimplemented in file_info_stored.

◆ get_url()

file_info::get_url ( $forcedownload = false,
$https = false )
inherited

Returns file download url.

Parameters
bool$forcedownloadwhether or not force download
bool$httpswhether or not force https
Return values
stringurl

Reimplemented in file_info_area_course_legacy, and file_info_stored.

◆ get_visible_name()

file_info_context_system::get_visible_name ( )

Returns localised visible name.

Return values
string

Reimplemented from file_info_context_coursecat.

◆ is_directory()

file_info_context_system::is_directory ( )

Whether or not this is a directory.

Return values
bool

Reimplemented from file_info_context_coursecat.

◆ is_empty_area()

file_info::is_empty_area ( )
inherited

Is this info area and is it "empty"? Are there any files in subfolders?

This is used mostly in repositories to reduce the number of empty folders. This method may be very slow, use with care.

Return values
bool

Reimplemented in file_info_area_backup_section, file_info_area_course_section, file_info_context_module, and file_info_stored.

◆ is_external_file()

file_info::is_external_file ( )
inherited

Whether or not this is a external resource.

Return values
bool

Reimplemented in file_info_stored.

◆ is_readable()

file_info::is_readable ( )
inherited

Whether or not I can read content of this file or enter directory.

Return values
bool

Reimplemented in file_info_stored.

◆ is_writable()

file_info_context_system::is_writable ( )

Whether or not new files or directories can be added.

Return values
bool

Reimplemented from file_info_context_coursecat.


The documentation for this class was generated from the following file: