Moodle PHP Documentation 4.5
Moodle 4.5dev (Build: 20240606) (d3ae1391abe)
data_field_picture Class Reference
Inheritance diagram for data_field_picture:
data_field_base

Public Member Functions

 define_default_field ()
 This field just sets up a default field object.
 
 define_field ($data)
 Set up the field object according to data in an object.
 
object delete_content ($recordid=0)
 Delete all content associated with the field.
 
object delete_field ()
 Delete a field completely.
 
 display_add_field ($recordid=0, $formdata=null)
 Print the relevant form element in the ADD template for this field.
 
 display_browse_field ($recordid, $template)
 Display the content of the field in browse mode.
 
object display_edit_field ()
 Print the relevant form element to define the attributes for this field viewable by teachers only.
 
 display_search_field ($value='')
 
 export_file_value (stdClass $record)
 Exports the file content for file export.
 
 export_text_value (stdClass $record)
 Here we export the text value of a picture field which is the filename of the exported picture.
 
 file_export_supported ()
 Specifies that this field type supports the export of files.
 
 file_import_supported ()
 Specifies that this field type supports the import of files.
 
 file_ok ($path)
 
 generate_sql ($tablealias, $value)
 
 get_config_for_external ()
 Return the plugin configs for external functions.
 
 get_data_content_preview (int $recordid)
 Generate a fake data_content for this field to be used in preset previews.
 
 get_field_params ()
 Function to let field define their parameters.
 
 get_file ($recordid, $content=null)
 
 get_name ()
 Return the field type name.
 
 get_preview ()
 Get the field preview value.
 
 get_sort_field ()
 Returns the sortable field for the content.
 
 get_sort_sql ($fieldname)
 Returns the SQL needed to refer to the column.
 
object image ()
 Prints the respective type icon.
 
 import_file_value (int $contentid, string $filecontent, string $filename)
 Provides the necessary code for importing a file when importing the content of a mod_data instance.
 
object insert_field ()
 Insert a new field in the database We assume the field object is already defined as $this->field.
 
 name ()
 Returns the name/type of the field.
 
 notemptyfield ($value, $name)
 Custom notempty function.
 
 parse_search_field ($defaults=null)
 
 print_after_form ()
 Just in case a field needs to print something after the whole form.
 
 print_before_form ()
 Just in case a field needs to print something before the whole form.
 
 set_preview (bool $preview)
 Set the field to preview mode.
 
 supports_preview ()
 Return if the field type supports preview.
 
 text_export_supported ()
 Per default, it is assumed that fields support text exporting.
 
 update_content ($recordid, $value, $name='')
 Update the content of one data field in the data_content table.
 
 update_field ()
 Update a field in the database.
 
 update_thumbnail ($content, $file)
 
 validate (stdClass $fieldinput)
 Validate the image field type parameters.
 

Static Public Member Functions

static get_content_value ($content)
 Returns the presentable string value for a field content.
 
static get_priority ()
 Returns the priority for being indexed by globalsearch.
 

Public Attributes

object $cm
 course module or cmifno
 
object $context
 activity context
 
object $data = NULL
 The database object that this field belongs to.
 
object $field = NULL
 The field object itself, if we know it.
 
int $iconheight = 16
 Width of the icon for this fieldtype.
 
int $iconwidth = 16
 Width of the icon for this fieldtype.
 
 $previewheight = 50
 
 $previewwidth = 50
 
 $type = 'picture'
 
const HIGH_PRIORITY = 3
 priority value for high priority
 
const LOW_PRIORITY = 2
 priority value for low priority
 
const MAX_PRIORITY = 4
 priority value for maximum priority
 
const MIN_PRIORITY = 1
 priority value for minimum priority
 
const NO_PRIORITY = 0
 priority value for invalid fields regarding indexing
 

Protected Member Functions

 get_data_content (int $recordid)
 Return the data_content of the field, or generate it if it is in preview mode.
 

Protected Attributes

bool $preview = false
 whether the field is used in preview mode.
 

Static Protected Attributes

static priority $priority = self::NO_PRIORITY
 for globalsearch indexing
 

Member Function Documentation

◆ define_default_field()

data_field_base::define_default_field ( )
inherited

This field just sets up a default field object.

Return values
bool

◆ define_field()

data_field_base::define_field ( $data)
inherited

Set up the field object according to data in an object.

Now is the time to clean it!

Return values
bool

◆ delete_content()

object data_field_base::delete_content ( $recordid = 0)
inherited

Delete all content associated with the field.

Parameters
int$recordid
Return values
bool

◆ delete_field()

object data_field_base::delete_field ( )
inherited

Delete a field completely.

Return values
bool

◆ display_add_field()

data_field_picture::display_add_field ( $recordid = 0,
$formdata = null )

Print the relevant form element in the ADD template for this field.

Parameters
int$recordid
Return values
string

Reimplemented from data_field_base.

◆ display_browse_field()

data_field_picture::display_browse_field ( $recordid,
$template )

Display the content of the field in browse mode.

Parameters
int$recordid
object$template
Return values
bool|string

Reimplemented from data_field_base.

◆ display_edit_field()

object data_field_base::display_edit_field ( )
inherited

Print the relevant form element to define the attributes for this field viewable by teachers only.

@global object

Return values
voidOutput is echo'd

◆ export_file_value()

data_field_picture::export_file_value ( stdClass $record)

Exports the file content for file export.

Parameters
stdClass$recordthe data content record the file belongs to
Return values
null|stringThe file content of the stored file or null if no file should be exported for this record

Reimplemented from data_field_base.

◆ export_text_value()

data_field_picture::export_text_value ( stdClass $record)

Here we export the text value of a picture field which is the filename of the exported picture.

Parameters
stdClass$recordthe record which is being exported
Return values
stringthe value which will be stored in the exported file for this field

Reimplemented from data_field_base.

◆ file_export_supported()

data_field_picture::file_export_supported ( )

Specifies that this field type supports the export of files.

Return values
booltrue which means that file export is being supported by this field type

Reimplemented from data_field_base.

◆ file_import_supported()

data_field_picture::file_import_supported ( )

Specifies that this field type supports the import of files.

Return values
booltrue which means that file import is being supported by this field type

Reimplemented from data_field_base.

◆ file_ok()

data_field_picture::file_ok ( $relativepath)
Parameters
string$relativepath
Return values
boolfalse

Reimplemented from data_field_base.

◆ get_config_for_external()

data_field_picture::get_config_for_external ( )

Return the plugin configs for external functions.

Return values
arraythe list of config parameters
Since
Moodle 3.3

Reimplemented from data_field_base.

◆ get_content_value()

static data_field_base::get_content_value ( $content)
staticinherited

Returns the presentable string value for a field content.

The returned string should be plain text.

Parameters
stdClass$content
Return values
string

Reimplemented in data_field_checkbox, data_field_multimenu, and data_field_textarea.

◆ get_data_content()

data_field_base::get_data_content ( int $recordid)
protectedinherited

Return the data_content of the field, or generate it if it is in preview mode.

Parameters
int$recordidthe record id
Return values
stdClass|boolthe record data or false if none

◆ get_data_content_preview()

data_field_picture::get_data_content_preview ( int $recordid)

Generate a fake data_content for this field to be used in preset previews.

Data plugins must override this method and support_preview in order to enable preset preview for this field.

Parameters
int$recordidthe fake record id
Return values
stdClassthe fake record

Reimplemented from data_field_base.

◆ get_field_params()

data_field_picture::get_field_params ( )

Function to let field define their parameters.

This method that should be overridden by the datafield plugins when they need to define their data.

Return values
array

Reimplemented from data_field_base.

◆ get_name()

data_field_base::get_name ( )
inherited

Return the field type name.

Return values
stringthe filed type.

◆ get_preview()

data_field_base::get_preview ( )
inherited

Get the field preview value.

Return values
bool

◆ get_priority()

static data_field_base::get_priority ( )
staticinherited

Returns the priority for being indexed by globalsearch.

Return values
int

◆ get_sort_field()

data_field_base::get_sort_field ( )
inherited

Returns the sortable field for the content.

By default, it's just content but for some plugins, it could be content 1 - content4

Return values
string

◆ get_sort_sql()

data_field_base::get_sort_sql ( $fieldname)
inherited

Returns the SQL needed to refer to the column.

Some fields may need to CAST() etc.

Parameters
string$fieldname
Return values
string\$fieldname

Reimplemented in data_field_date, data_field_latlong, and data_field_number.

◆ image()

object data_field_base::image ( )
inherited

Prints the respective type icon.

Return values
string

◆ import_file_value()

data_field_picture::import_file_value ( int $contentid,
string $filecontent,
string $filename )

Provides the necessary code for importing a file when importing the content of a mod_data instance.

Parameters
int$contentidthe id of the mod_data content record
string$filecontentthe content of the file to import as string
string$filenamethe filename the imported file should get
Return values
void

Reimplemented from data_field_base.

◆ insert_field()

object data_field_base::insert_field ( )
inherited

Insert a new field in the database We assume the field object is already defined as $this->field.

Return values
bool

◆ name()

data_field_base::name ( )
inherited

Returns the name/type of the field.

Return values
string

◆ notemptyfield()

data_field_picture::notemptyfield ( $value,
$name )

Custom notempty function.

Parameters
string$value
string$name
Return values
bool

Reimplemented from data_field_base.

◆ print_after_form()

data_field_base::print_after_form ( )
inherited

Just in case a field needs to print something after the whole form.

Reimplemented in data_field_textarea.

◆ set_preview()

data_field_base::set_preview ( bool $preview)
inherited

Set the field to preview mode.

Parameters
bool$previewthe new preview value

◆ supports_preview()

data_field_picture::supports_preview ( )

Return if the field type supports preview.

Fields without a preview cannot be displayed in the preset preview.

Return values
boolif the plugin supports preview.

Reimplemented from data_field_base.

◆ text_export_supported()

data_field_base::text_export_supported ( )
inherited

Per default, it is assumed that fields support text exporting.

Override this (return false) on fields not supporting text exporting.

Return values
booltrue

◆ update_content()

data_field_picture::update_content ( $recordid,
$value,
$name = '' )

Update the content of one data field in the data_content table.

Parameters
int$recordid
mixed$value
string$name
Return values
bool

Reimplemented from data_field_base.

◆ update_field()

data_field_picture::update_field ( )

Update a field in the database.

Return values
bool

Reimplemented from data_field_base.

◆ validate()

data_field_picture::validate ( stdClass $fieldinput)

Validate the image field type parameters.

This will check for valid numeric values in the width and height fields.

Parameters
stdClass$fieldinputthe field input data
Return values
arrayarray of error messages if width or height parameters are not numeric
Exceptions
coding_exception

Reimplemented from data_field_base.


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