workshop_numerrors_strategy Class Reference

"Number of errors" grading strategy logic. More...

Inheritance diagram for workshop_numerrors_strategy:

Public Member Functions
	__construct (workshop $workshop)
	Constructor.
	form_ready ()
	Has the assessment form been defined and is ready to be used by the reviewers?
	get_assessment_form (moodle_url $actionurl=null, $mode='preview', stdclass $assessment=null, $editable=true, $options=array())
	Factory method returning an instance of an assessment form.
	get_assessments_recordset ($restrict=null)
	get_dimensions_info ()
	get_edit_strategy_form ($actionurl=null)
	Factory method returning an instance of an assessment form editor class.
	save_assessment (stdclass $assessment, stdclass $data)
	Saves the filled assessment.
	save_edit_strategy_form (stdclass $data)
	Save the assessment dimensions into database.

Static Public Member Functions
static	delete_instance ($workshopid)
	Delete all data related to a given workshop module instance.
static	scale_used ($scaleid, $workshopid=null)
	Is a given scale used by the instance of workshop?

Public Attributes
number const	ADDDIMS = 2
	of dimensions to add
default const	MINDIMS = 3
	number of dimensions to show

Protected Member Functions
	calculate_peer_grade (array $grades)
	Calculates the aggregated grade given by the reviewer.
	delete_dimensions (array $ids)
	Deletes dimensions and removes embedded media from its descriptions.
	errors_to_grade ($numerrors)
	Returns a grade 0.00000 to 100.00000 for the given number of errors.
	get_current_assessment_data (stdclass $assessment)
	Returns the list of current grades filled by the reviewer.
	load_fields ()
	Loads the fields of the assessment form currently used in this workshop.
	load_mappings ()
	Loads the mappings of the number of errors to the grade.
	prepare_database_fields (stdclass $raw)
	Prepares data returned by workshop_edit_numerrors_strategy_form so they can be saved into database.
	prepare_form_fields (array $dims, array $maps)
	Prepares the database data to be used by the mform.
	update_peer_grade (stdclass $assessment)
	Aggregates the assessment form data and sets the grade for the submission given by the peer.

Protected Attributes
array	$descriptionopts
	options for dimension description fields
array	$dimensions = null
	definition of the assessment form fields
array	$mappings = null
	mapping of the number of errors to a grade
workshop	$workshop
	the parent workshop instance

Detailed Description

"Number of errors" grading strategy logic.

Constructor & Destructor Documentation

__construct()

workshop_numerrors_strategy::__construct

(

workshop

$workshop

)

Constructor.

Parameters

workshop

$workshop

The workshop instance record

Return values

void

Member Function Documentation

calculate_peer_grade()

workshop_numerrors_strategy::calculate_peer_grade ( array $grades )

protected

Calculates the aggregated grade given by the reviewer.

Parameters

array

$grades

Grade records as returned by get_current_assessment_data

Return values

float|null

Raw grade (0.00000 to 100.00000) for submission as suggested by the peer

delete_dimensions()

workshop_numerrors_strategy::delete_dimensions ( array $ids )

protected

Deletes dimensions and removes embedded media from its descriptions.

todo we may check that there are no assessments done using these dimensions and probably remove them

Parameters

array

$ids

list to delete

Return values

void

delete_instance()

static workshop_numerrors_strategy::delete_instance ( $workshopid )

static

Delete all data related to a given workshop module instance.

See also

workshop_delete_instance()

Parameters

int

$workshopid

id of the workshop module instance being deleted

Return values

void

Implements workshop_strategy.

errors_to_grade()

workshop_numerrors_strategy::errors_to_grade ( $numerrors )

protected

Returns a grade 0.00000 to 100.00000 for the given number of errors.

This is where we use the mapping table defined by the teacher. If a grade for the given number of errors (negative assertions) is not defined, the most recently defined one is used. Example of the defined mapping: Number of errors | Grade 0 | 100% (always) 1 | - (not defined) 2 | 80% 3 | 60% 4 | - 5 | 30% 6 | 0% With this mapping, one error is mapped to 100% grade and 4 errors is mapped to 60%.

Parameters

mixed

$numerrors

Number of errors

Return values

float

Raw grade (0.00000 to 100.00000) for the given number of negative assertions

form_ready()

workshop_numerrors_strategy::form_ready

(

)

Has the assessment form been defined and is ready to be used by the reviewers?

Return values

boolean

Implements workshop_strategy.

get_assessment_form()

workshop_numerrors_strategy::get_assessment_form	(	moodle_url	$actionurl = null,
			$mode = 'preview',
		stdclass	$assessment = null,
			$editable = true,
			$options = array() )

Factory method returning an instance of an assessment form.

Parameters

moodle_url	$actionurl	URL of form handler, defaults to auto detect the current url
string	$mode	Mode to open the form in: preview/assessment
stdClass	$assessment
bool	$editable
array	$options

Implements workshop_strategy.

get_assessments_recordset()

workshop_numerrors_strategy::get_assessments_recordset

(

$restrict = null

)

See also

parent\get_assessments_recordset()

Implements workshop_strategy.

get_current_assessment_data()

workshop_numerrors_strategy::get_current_assessment_data ( stdclass $assessment )

protected

Returns the list of current grades filled by the reviewer.

Parameters

stdClass

$assessment

Assessment record

Return values

array

of filtered records from the table workshop_grades

get_dimensions_info()

workshop_numerrors_strategy::get_dimensions_info

(

)

See also

parent\get_dimensions_info()

Implements workshop_strategy.

get_edit_strategy_form()

workshop_numerrors_strategy::get_edit_strategy_form

(

$actionurl = null

)

Factory method returning an instance of an assessment form editor class.

Parameters

$actionurl

URL of form handler, defaults to auto detect the current url

Implements workshop_strategy.

load_fields()

workshop_numerrors_strategy::load_fields ( )

protected

Loads the fields of the assessment form currently used in this workshop.

Return values

array

definition of assessment dimensions

load_mappings()

workshop_numerrors_strategy::load_mappings ( )

protected

Loads the mappings of the number of errors to the grade.

Return values

array

of records

prepare_database_fields()

workshop_numerrors_strategy::prepare_database_fields ( stdclass $raw )

protected

Prepares data returned by workshop_edit_numerrors_strategy_form so they can be saved into database.

It automatically adds some columns into every record. The sorting is done by the order of the returned array and starts with 1. Called internally from save_edit_strategy_form() only. Could be private but keeping protected for unit testing purposes.

Parameters

stdClass

$raw

Raw data returned by mform

Return values

array

Array of objects to be inserted/updated in DB

prepare_form_fields()

workshop_numerrors_strategy::prepare_form_fields ( array $dims, array $maps )

protected

Prepares the database data to be used by the mform.

Parameters

array	$dims	Array of raw dimension records as returned by load_fields()
array	$maps	Array of raw mapping records as returned by load_mappings()

Return values

array

Array of fields data to be used by the mform set_data

save_assessment()

workshop_numerrors_strategy::save_assessment	(	stdclass	$assessment,
		stdclass	$data )

Saves the filled assessment.

This method processes data submitted using the form returned by get_assessment_form()

Parameters

stdClass	$assessment	Assessment being filled
stdClass	$data	Raw data as returned by the assessment form

Return values

float|null

Raw grade (from 0.00000 to 100.00000) for submission as suggested by the peer

Implements workshop_strategy.

save_edit_strategy_form()

workshop_numerrors_strategy::save_edit_strategy_form

(

stdclass

$data

)

Save the assessment dimensions into database.

Saves data into the main strategy form table. If the record->id is null or zero, new record is created. If the record->id is not empty, the existing record is updated. Records with empty 'description' field are removed from database. The passed data object are the raw data returned by the get_data().

@uses $DB

Parameters

stdClass

$data

Raw data returned by the dimension editor form

Return values

void

Implements workshop_strategy.

scale_used()

static workshop_numerrors_strategy::scale_used ( $scaleid, $workshopid = null )

static

Is a given scale used by the instance of workshop?

This grading strategy does not use scales.

Parameters

int	$scaleid	id of the scale to check
int | null	$workshopid	id of workshop instance to check, checks all in case of null

Return values

bool

Implements workshop_strategy.

update_peer_grade()

workshop_numerrors_strategy::update_peer_grade ( stdclass $assessment )

protected

Aggregates the assessment form data and sets the grade for the submission given by the peer.

Parameters

stdClass

$assessment

Assessment record

Return values

float|null

Raw grade (0.00000 to 100.00000) for submission as suggested by the peer

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

• mod/workshop/form/numerrors/lib.php