praiadeseselle/wire/core/Fieldgroup.php
2022-03-08 15:55:41 +01:00

757 lines
21 KiB
PHP

<?php namespace ProcessWire;
/**
* ProcessWire Fieldgroup
*
* A group of fields that is ultimately attached to a Template.
*
* #pw-summary Fieldgroup is a type of WireArray that holds a group of Field objects for template(s).
* #pw-body For full details on all methods available in a Fieldgroup, be sure to also see the `WireArray` class.
*
* The existance of Fieldgroups is hidden at the ProcessWire web admin level
* as it appears that fields are attached directly to Templates. However, they
* are separated in the API in case want want to have fieldgroups used by
* multiple templates in the future (like ProcessWire 1.x).
*
* ProcessWire 3.x, Copyright 2016 by Ryan Cramer
* https://processwire.com
*
* @property int $id Fieldgroup database ID #pw-group-retrieval
* @property string $name Fieldgroup name #pw-group-retrieval
* @property array $fields_id Array of all field IDs in this Fieldgroup
* @property null|FieldsArray $removedFields Null when there are no removed fields, or FieldsArray when there are.
*
*/
class Fieldgroup extends WireArray implements Saveable, Exportable, HasLookupItems {
/**
* Prefix for namespaced field contexts
*
*/
const contextNamespacePrefix = 'NS_';
/**
* Permanent/common settings for a Fieldgroup, fields in the database
*
*/
protected $settings = array(
'id' => 0,
'name' => '',
);
/**
* Any fields that were removed from this instance are noted so that Fieldgroups::save() can delete unused data
*
* @var FieldsArray|null
*
*/
protected $removedFields = null;
/**
* Array indexed by field_id containing an array of variables specific to the context of that field in this fieldgroup
*
* This context overrides the values set in the field when it doesn't have context.
*
*/
protected $fieldContexts = array();
/**
* Per WireArray interface, items added must be instances of Field
*
* #pw-internal
*
* @param $item
* @return bool
*
*/
public function isValidItem($item) {
return is_object($item) && $item instanceof Field;
}
/**
* Per WireArray interface, keys must be numeric
*
* #pw-internal
*
* @param int|string $key
* @return bool
*
*/
public function isValidKey($key) {
return is_int($key) || ctype_digit("$key");
}
/**
* Per WireArray interface, the item key is it's ID
*
* #pw-internal
*
* @param $item
* @return int|string
*
*/
public function getItemKey($item) {
return $item->id;
}
/**
* Per WireArray interface, return a blank item
*
* #pw-internal
*
* @return Wire|Field
*
*/
public function makeBlankItem() {
return $this->wire(new Field());
}
/**
* Add a field to this Fieldgroup
*
* ~~~~~
* $field = $fields->get('body');
* $fieldgroup->add($field);
* ~~~~~
*
* #pw-group-manipulation
*
* @param Field|string $field Field object, field name or id.
* @return $this
* @throws WireException
*
*/
public function add($field) {
if(!is_object($field)) $field = $this->wire('fields')->get($field);
if($field && $field instanceof Field) {
if(!$field->id) throw new WireException("You must save field '$field' before adding to Fieldgroup '{$this->name}'");
parent::add($field);
} else {
// throw new WireException("Unable to add field '$field' to Fieldgroup '{$this->name}'");
}
return $this;
}
/**
* Remove a field from this fieldgroup
*
* Note that this must be followed up with a `$fieldgroup->save()` before it does anything destructive.
* This method does nothing more than queue the removal.
*
* _Technical Details_
* Performs a deletion by finding all templates using this fieldgroup, then finding all pages using the template, then
* calling upon the Fieldtype to delete them one at a time. This is a potentially expensive/time consuming method, and
* may need further consideration.
*
* #pw-group-manipulation
*
* @param Field|string $field Field object or field name, or id.
* @return bool True on success, false on failure.
*
*/
public function remove($field) {
if(!is_object($field)) $field = $this->wire('fields')->get($field);
if(!$this->getField($field->id)) return false;
if(!$field) return true;
// Make note of any fields that were removed so that Fieldgroups::save()
// can delete data for those fields
if(is_null($this->removedFields)) $this->removedFields = $this->wire(new FieldsArray());
$this->removedFields->add($field);
$this->trackChange("remove:$field", $field, null);
// parent::remove($field->id); replaced with finishRemove() method below
return true;
}
/**
* Intended to be called by Fieldgroups::save() to complete the field removal
*
* This completes the removal process. The remove() method above only queues the removal but doesn't execute it.
* Instead, Fieldgroups::save() calls this method to finish the removal. This is necessary because if remove()
* removes the data from memory, then save() won't still have access to determine what related assets should
* be removed.
*
* This method is for use by Fieldgroups::save() and not intended for API usage.
*
* #pw-internal
*
* @param Field $field
* @return Fieldgroup|WireArray $this
*
*/
public function finishRemove(Field $field) {
return parent::remove($field->id);
}
/**
* Remove a field without queueing it to be removed from database
*
* Removes a field from the fieldgroup without deleting any associated field data when fieldgroup
* is saved to the database. This is useful in the API when you want to move a field around within
* a fieldgroup, like when moving a field to a Fieldset within the Fieldgroup.
*
* #pw-group-manipulation
*
* @param Field|string|int $field Field object, name or id.
* @return bool|Fieldgroup|WireArray
*
*/
public function softRemove($field) {
if(!is_object($field)) $field = $this->wire('fields')->get($field);
if(!$this->getField($field->id)) return false;
if(!$field) return true;
return parent::remove($field->id);
}
/**
* Clear all removed fields, for use by Fieldgroups::save
*
* #pw-internal
*
*/
public function resetRemovedFields() {
$this->removedFields = null;
}
/**
* Get a field that is part of this fieldgroup
*
* Same as `Fieldgroup::get()` except that it only checks fields, not other properties of a fieldgroup.
* Meaning, this is the preferred way to retrieve a Field from a Fieldgroup.
*
* #pw-group-retrieval
*
* @param string|int|Field $key Field object, name or id.
* @param bool|string $useFieldgroupContext Optionally specify one of the following (default=false):
* - `true` (boolean) Returned Field will be a clone of the original with context data set.
* - Specify a namespace (string) to retrieve context within that namespace.
* @return Field|null Field object when present in this Fieldgroup, or null if not.
*
*/
public function getField($key, $useFieldgroupContext = false) {
if(is_object($key) && $key instanceof Field) $key = $key->id;
if(is_string($key) && ctype_digit("$key")) $key = (int) $key;
if($this->isValidKey($key)) {
$value = parent::get($key);
} else {
$value = null;
foreach($this as $field) {
if($field->name == $key) {
$value = $field;
break;
}
}
}
if($value && $useFieldgroupContext) {
$value = clone $value;
if(isset($this->fieldContexts[$value->id])) {
$context = $this->fieldContexts[$value->id];
$namespace = is_string($useFieldgroupContext) ? self::contextNamespacePrefix . $useFieldgroupContext : "";
if($namespace && isset($context[$namespace]) && is_array($context[$namespace])) $context = $context[$namespace];
foreach($context as $k => $v) {
// if(strpos($k, self::contextNamespacePrefix) === 0) continue;
$value->set($k, $v);
}
}
}
if($useFieldgroupContext && $value) {
$value->flags = $value->flags | Field::flagFieldgroupContext;
$value->setQuietly('_contextFieldgroup', $this);
}
return $value;
}
/**
* Does the given Field have context data available in this fieldgroup?
*
* A Field with context data is one that overrides one or more settings present with the Field
* when it is outside the context of this Fieldgroup. For example, perhaps a Field has a
* columnWidth setting of 100% in its global settings, but only 50% when used in this Fieldgroup.
*
* #pw-group-retrieval
*
* @param int|string|Field $field Field object, name or id
* @param string $namespace Optional namespace string for context
* @return bool True if additional context information is available, false if not.
*
*/
public function hasFieldContext($field, $namespace = '') {
if(is_object($field) && $field instanceof Field) $field = $field->id;
if(is_string($field) && !ctype_digit($field)) {
$field = $this->wire('fields')->get($field);
$field = $field && $field->id ? $field->id : 0;
}
if(isset($this->fieldContexts[(int) $field])) {
if($namespace) return isset($this->fieldContexts[(int) $field][self::contextNamespacePrefix . $namespace]);
return true;
}
return false;
}
/**
* Get a Field that is part of this Fieldgroup, in the context of this Fieldgroup.
*
* Returned Field will be a clone of the original with additional context data
* already populated to it.
*
* #pw-group-retrieval
*
* @param string|int|Field $key Field object, name or id.
* @param string $namespace Optional namespace string for context
* @return Field|null
*
*/
public function getFieldContext($key, $namespace = '') {
return $this->getField($key, $namespace ? $namespace : true);
}
/**
* Does this fieldgroup have the given field?
*
* #pw-group-retrieval
*
* @param string|int|Field $key Field object, name or id.
* @return bool True if this Fieldgroup has the field, false if not.
*
*/
public function hasField($key) {
return $this->getField($key) !== null;
}
/**
* Get a Fieldgroup property or a Field.
*
* It is preferable to use `Fieldgroup::getField()` to retrieve fields from the Fieldgroup because
* the scope of this `get()` method means it can return more than just Field object.
*
* #pw-group-retrieval
*
* @param string|int $key Property name to retrieve, or Field name
* @return Field|string|int|null|array
*
*/
public function get($key) {
if($key == 'fields') return $this;
if($key == 'fields_id') {
$values = array();
foreach($this as $field) $values[] = $field->id;
return $values;
}
if($key == 'removedFields') return $this->removedFields;
if(isset($this->settings[$key])) return $this->settings[$key];
$value = parent::get($key);
if($value !== null) return $value;
return $this->getField($key);
}
/**
* Per HasLookupItems interface, add a Field to this Fieldgroup
*
* #pw-internal
*
* @param Saveable|Field $item
* @param array $row
* @return $this
*
*/
public function addLookupItem($item, array &$row) {
if($item) $this->add($item);
if(!empty($row['data'])) {
// set field context for this fieldgroup
$this->fieldContexts[(int)$item] = wireDecodeJSON($row['data']);
}
return $this;
}
/**
* Set a fieldgroup property
*
* #pw-group-manipulation
*
* @param string $key Name of property to set
* @param string|int|object $value Value of property
* @return Fieldgroup|WireArray $this
* @throws WireException if passed invalid data
*
*/
public function set($key, $value) {
if($key == 'data') return $this; // we don't have a data field here
if($key == 'id') {
$value = (int) $value;
} else if($key == 'name') {
$value = $this->wire('sanitizer')->name($value);
}
if(isset($this->settings[$key])) {
if($this->settings[$key] !== $value) $this->trackChange($key, $this->settings[$key], $value);
$this->settings[$key] = $value;
} else {
return parent::set($key, $value);
}
return $this;
}
/**
* Save this Fieldgroup to the database
*
* To hook into this, hook to `Fieldgroups::save()` instead.
*
* #pw-group-manipulation
*
* @return $this
*
*/
public function save() {
$this->wire('fieldgroups')->save($this);
return $this;
}
/**
* Fieldgroups always return their name when dereferenced as a string
*
*/
public function __toString() {
return $this->name;
}
/**
* Per Saveable interface, get an array of data associated with the database table
*
* #pw-internal
*
* @return array
*
*/
public function getTableData() {
return $this->settings;
}
/**
* Per Saveable interface: return data for external storage
*
* #pw-internal
*
*/
public function getExportData() {
/** @var Fieldgroups $fieldgroups */
$fieldgroups = $this->wire('fieldgroups');
return $fieldgroups->getExportData($this);
}
/**
* Given an export data array, import it back to the class and return what happened
*
* Changes are not committed until the item is saved
*
* #pw-internal
*
* @param array $data
* @return array Returns array(
* [property_name] => array(
* 'old' => 'old value', // old value, always a string
* 'new' => 'new value', // new value, always a string
* 'error' => 'error message or blank if no error'
* )
* @throws WireException if given invalid data
*
*/
public function setImportData(array $data) {
/** @var Fieldgroups $fieldgroups */
$fieldgroups = $this->wire('fieldgroups');
return $fieldgroups->setImportData($this, $data);
}
/**
* Per HasLookupItems interface, get a WireArray of Field instances associated with this Fieldgroup
*
* #pw-internal
*
*/
public function getLookupItems() {
return $this;
}
/**
* Get all of the Inputfields for this Fieldgroup associated with the provided Page and populate them.
*
* #pw-group-retrieval
*
* @param Page $page Page that the Inputfields will be for.
* @param string|array $contextStr Optional context string to append to all the Inputfield names, OR array of options.
* - Optional context string is helpful for things like repeaters.
* - You may instead specify associative array of any method arguments if preferred.
* @param string|array $fieldName Limit to a particular fieldName(s) or field IDs (optional).
* - If specifying a single field (name or ID) and it refers to a fieldset, then all fields in that fieldset will be included.
* - If specifying an array of field names/IDs the returned InputfieldWrapper will maintain the requested order.
* @param string $namespace Additional namespace for the Inputfield context (optional).
* @param bool $flat Returns all Inputfields in a flattened InputfieldWrapper (default=true).
* @return InputfieldWrapper Returns an InputfieldWrapper that acts as a container for multiple Inputfields.
*
*/
public function getPageInputfields(Page $page, $contextStr = '', $fieldName = '', $namespace = '', $flat = true) {
if(is_array($contextStr)) {
// 2nd argument is instead an array of options
$defaults = array(
'contextStr' => '',
'fieldName' => $fieldName,
'namespace' => $namespace,
'flat' => $flat,
);
$options = $contextStr;
$options = array_merge($defaults, $options);
$contextStr = $options['contextStr'];
$fieldName = $options['fieldName'];
$namespace = $options['namespace'];
$flat = $options['flat'];
}
$container = $this->wire(new InputfieldWrapper());
$containers = array();
$inFieldset = false;
$inHiddenFieldset = false;
$inModalGroup = '';
// for multiple named fields
$multiMode = false;
$fieldInputfields = array();
if(is_array($fieldName)) {
// an array was specified for $fieldName
if(count($fieldName) == 1) {
// single field requested, revert to single field
$fieldName = reset($fieldName);
} else if(count($fieldName) == 0) {
// blank array, no field name requested
$fieldName = '';
} else {
// multiple field names asked for, setup for retaining requested order
$multiMode = true;
foreach($fieldName as $name) {
$field = $this->getField($name);
if($field) $fieldInputfields[$field->id] = false; // placeholder
}
$fieldName = '';
}
}
foreach($this as $field) {
// for named multi-field retrieval
if($multiMode && !isset($fieldInputfields[$field->id])) continue;
// get a clone in the context of this fieldgroup, if it has contextual settings
if(isset($this->fieldContexts[$field->id])) $field = $this->getFieldContext($field->id, $namespace);
if($inModalGroup) {
// we are in a modal group that should be skipped since all the inputs require the modal
if($field->name == $inModalGroup . "_END") {
// exit modal group
$inModalGroup = false;
} else {
// skip field
continue;
}
}
if($inHiddenFieldset) {
// we are in a modal group that should be skipped since all the inputs require the modal
if($field->name == $inHiddenFieldset . "_END") {
$inHiddenFieldset = false;
} else {
continue;
}
}
if($fieldName) {
// limit to specific field name
if($inFieldset) {
// allow the field
if($field->type instanceof FieldtypeFieldsetClose && $field->name == $fieldName . "_END") {
// stop, as we've got all the fields we need
break;
}
// allow
} else if($field->name == $fieldName || (ctype_digit("$fieldName") && $field->id == $fieldName)) {
// start allow fields
if($field->type instanceof FieldtypeFieldsetOpen) {
$container = $field->getInputfield($page, $contextStr);
$inFieldset = true;
continue;
} else {
// allow 1 field
}
} else {
// disallow
continue;
}
} else if($field->modal && $field->type instanceof FieldtypeFieldsetOpen) {
// field requires modal
$inModalGroup = $field->name;
} else if($field->type instanceof FieldtypeFieldsetOpen && $field->collapsed == Inputfield::collapsedHidden) {
$inHiddenFieldset = $field->name;
continue;
} else if(!$flat && $field->type instanceof FieldtypeFieldsetOpen) {
// new fieldset in non-flat mode
if($field->type instanceof FieldtypeFieldsetClose) {
// restore back to previous container
if(count($containers)) $container = array_pop($containers);
} else {
// start a new container
$inputfield = $field->getInputfield($page, $contextStr);
if(!$inputfield) $inputfield = $this->wire(new InputfieldWrapper());
if($inputfield->collapsed == Inputfield::collapsedHidden) continue;
$container->add($inputfield);
$containers[] = $container;
$container = $inputfield; // container is now the child InputfieldWrapper
}
continue;
}
$inputfield = $field->getInputfield($page, $contextStr);
if(!$inputfield) continue;
if($inputfield->collapsed == Inputfield::collapsedHidden) continue;
if(!$page instanceof NullPage) {
$value = $page->get($field->name);
$inputfield->setAttribute('value', $value);
}
if($multiMode) {
$fieldInputfields[$field->id] = $inputfield;
} else {
$container->add($inputfield);
}
}
if($multiMode) {
// add to container in requested order
foreach($fieldInputfields as $fieldID => $inputfield) {
if($inputfield) $container->add($inputfield);
}
}
return $container;
}
/**
* Get a list of all templates using this Fieldgroup
*
* #pw-group-retrieval
*
* @return TemplatesArray
*
*/
public function getTemplates() {
/** @var Fieldgroups $fieldgroups */
$fieldgroups = $this->wire('fieldgroups');
return $fieldgroups->getTemplates($this);
}
/**
* Get the number of templates using this Fieldgroup
*
* #pw-group-retrieval
*
* @return int
*
*/
public function getNumTemplates() {
return $this->wire('fieldgroups')->getNumTemplates($this);
}
/**
* Alias of getNumTemplates()
*
* #pw-internal
*
* @return int
*
*/
public function numTemplates() {
return $this->getNumTemplates();
}
/**
* Return an array of context data for the given field ID
*
* #pw-internal
*
* @param int|null $field_id Field ID or omit to return all field contexts
* @param string $namespace Optional namespace
* @return array
*
*/
public function getFieldContextArray($field_id = null, $namespace = '') {
if(is_null($field_id)) return $this->fieldContexts;
if(isset($this->fieldContexts[$field_id])) {
if($namespace) {
$namespace = self::contextNamespacePrefix . $namespace;
if(isset($this->fieldContexts[$field_id][$namespace])) {
return $this->fieldContexts[$field_id][$namespace];
}
return array();
} else if(isset($this->fieldContexts[$field_id])) {
return $this->fieldContexts[$field_id];
}
}
return array();
}
/**
* Set an array of context data for the given field ID
*
* #pw-internal
*
* @param int $field_id Field ID
* @param array $data
* @param string $namespace Optional namespace
*
*/
public function setFieldContextArray($field_id, $data, $namespace = '') {
if($namespace) {
if(!isset($this->fieldContexts[$field_id])) $this->fieldContexts[$field_id] = array();
$namespace = self::contextNamespacePrefix . $namespace;
$this->fieldContexts[$field_id][$namespace] = $data;
} else {
$this->fieldContexts[$field_id] = $data;
}
}
/**
* Save field contexts for this fieldgroup
*
* #pw-group-manipulation
*
* @return int Number of contexts saved
*
*/
public function saveContext() {
return $this->wire('fieldgroups')->saveContext($this);
}
}