silverstripe-userforms/code/Extension/UserFormFieldEditorExtension.php

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<?php
namespace SilverStripe\UserForms\Extension;
use SilverStripe\Forms\FieldList;
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use SilverStripe\Forms\GridField\GridFieldPaginator;
use SilverStripe\Forms\Tab;
use SilverStripe\Forms\GridField\GridField;
use SilverStripe\Forms\GridField\GridFieldButtonRow;
use SilverStripe\Forms\GridField\GridFieldConfig;
use SilverStripe\Forms\GridField\GridFieldEditButton;
use SilverStripe\Forms\GridField\GridFieldDeleteAction;
use SilverStripe\Forms\GridField\GridFieldDetailForm;
use SilverStripe\Forms\GridField\GridFieldToolbarHeader;
use SilverStripe\ORM\DataExtension;
use SilverStripe\UserForms\Form\GridFieldAddClassesButton;
use SilverStripe\UserForms\Model\EditableFormField;
use SilverStripe\UserForms\Model\EditableFormField\EditableFieldGroup;
use SilverStripe\UserForms\Model\EditableFormField\EditableFieldGroupEnd;
use SilverStripe\UserForms\Model\EditableFormField\EditableFormStep;
use SilverStripe\UserForms\Model\EditableFormField\EditableTextField;
use SilverStripe\Versioned\Versioned;
use SilverStripe\View\Requirements;
use Symbiote\GridFieldExtensions\GridFieldEditableColumns;
use Symbiote\GridFieldExtensions\GridFieldOrderableRows;
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/**
* @package userforms
*/
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class UserFormFieldEditorExtension extends DataExtension
{
/**
* @var array
*/
private static $has_many = array(
'Fields' => EditableFormField::class
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);
private static $owns = [
'Fields'
];
private static $cascade_deletes = [
'Fields'
];
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/**
* Adds the field editor to the page.
*
* @return FieldList
*/
public function updateCMSFields(FieldList $fields)
{
$fieldEditor = $this->getFieldEditorGrid();
$fields->insertAfter(new Tab('FormFields', _t(__CLASS__.'.FORMFIELDS', 'Form Fields')), 'Main');
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$fields->addFieldToTab('Root.FormFields', $fieldEditor);
return $fields;
}
/**
* Gets the field editor, for adding and removing EditableFormFields.
*
* @return GridField
*/
public function getFieldEditorGrid()
{
Requirements::javascript('silverstripe/userforms:client/dist/js/userforms-cms.js');
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$fields = $this->owner->Fields();
$this->createInitialFormStep(true);
$editableColumns = new GridFieldEditableColumns();
$fieldClasses = singleton(EditableFormField::class)->getEditableFieldClasses();
$editableColumns->setDisplayFields([
'ClassName' => function ($record, $column, $grid) use ($fieldClasses) {
if ($record instanceof EditableFormField) {
return $record->getInlineClassnameField($column, $fieldClasses);
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}
},
'Title' => function ($record, $column, $grid) {
if ($record instanceof EditableFormField) {
return $record->getInlineTitleField($column);
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}
}
]);
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$config = GridFieldConfig::create()
->addComponents(
$editableColumns,
new GridFieldButtonRow(),
(new GridFieldAddClassesButton(EditableTextField::class))
->setButtonName(_t(__CLASS__.'.ADD_FIELD', 'Add Field'))
->setButtonClass('btn-primary'),
(new GridFieldAddClassesButton(EditableFormStep::class))
->setButtonName(_t(__CLASS__.'.ADD_PAGE_BREAK', 'Add Page Break'))
->setButtonClass('btn-secondary'),
(new GridFieldAddClassesButton([EditableFieldGroup::class, EditableFieldGroupEnd::class]))
->setButtonName(_t(__CLASS__.'.ADD_FIELD_GROUP', 'Add Field Group'))
->setButtonClass('btn-secondary'),
$editButton = new GridFieldEditButton(),
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new GridFieldDeleteAction(),
new GridFieldToolbarHeader(),
new GridFieldOrderableRows('Sort'),
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new GridFieldDetailForm(),
new GridFieldPaginator(999)
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);
$editButton->removeExtraClass('grid-field__icon-action--hidden-on-hover');
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$fieldEditor = GridField::create(
'Fields',
'',
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$fields,
$config
)->addExtraClass('uf-field-editor');
return $fieldEditor;
}
/**
* A UserForm must have at least one step.
* If no steps exist, create an initial step, and put all fields inside it.
*
* @param bool $force
* @return void
*/
public function createInitialFormStep($force = false)
{
// Only invoke once saved
if (!$this->owner->exists()) {
return;
}
// Check if first field is a step
$fields = $this->owner->Fields();
$firstField = $fields->first();
if ($firstField instanceof EditableFormStep) {
return;
}
// Don't create steps on write if there are no formfields, as this
// can create duplicate first steps during publish of new records
if (!$force && !$firstField) {
return;
}
// Re-apply sort to each field starting at 2
$next = 2;
foreach ($fields as $field) {
$field->Sort = $next++;
$field->write();
}
// Add step
$step = EditableFormStep::create();
$step->Title = _t('SilverStripe\\UserForms\\Model\\EditableFormField\\EditableFormStep.TITLE_FIRST', 'First Page');
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$step->Sort = 1;
$step->write();
$fields->add($step);
}
/**
* Ensure that at least one page exists at the start
*/
public function onAfterWrite()
{
$this->createInitialFormStep();
}
/**
* Remove any orphaned child records on publish
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*/
public function onAfterPublish()
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{
// store IDs of fields we've published
$seenIDs = [];
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foreach ($this->owner->Fields() as $field) {
// store any IDs of fields we publish so we don't unpublish them
$seenIDs[] = $field->ID;
$field->doPublish(Versioned::DRAFT, Versioned::LIVE);
$field->destroy();
}
// fetch any orphaned live records
$live = Versioned::get_by_stage(EditableFormField::class, Versioned::LIVE)
->filter([
'ParentID' => $this->owner->ID,
]);
if (!empty($seenIDs)) {
$live = $live->exclude([
'ID' => $seenIDs,
]);
}
// delete orphaned records
foreach ($live as $field) {
$field->deleteFromStage(Versioned::LIVE);
$field->destroy();
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}
}
/**
* Remove all fields from the live stage when unpublishing the page
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*/
public function onAfterUnpublish()
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{
foreach ($this->owner->Fields() as $field) {
$field->deleteFromStage(Versioned::LIVE);
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}
}
/**
* When duplicating a UserDefinedForm, duplicate all of its fields and display rules
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*
* @see \SilverStripe\ORM\DataObject::duplicate
* @param \SilverStripe\ORM\DataObject $oldPage
* @param bool $doWrite
* @param string $manyMany
* @return \SilverStripe\ORM\DataObject
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*/
public function onAfterDuplicate($oldPage, $doWrite, $manyMany)
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{
// List of EditableFieldGroups, where the key of the array is the ID of the old end group
$fieldGroups = [];
foreach ($oldPage->Fields() as $field) {
/** @var EditableFormField $newField */
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$newField = $field->duplicate(false);
$newField->ParentID = $this->owner->ID;
$newField->ParentClass = $this->owner->ClassName;
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$newField->Version = 0;
$newField->write();
// If we encounter a group start, record it for later use
if ($field instanceof EditableFieldGroup) {
$fieldGroups[$field->EndID] = $newField;
}
// If we encounter an end group, link it back to the group start
if ($field instanceof EditableFieldGroupEnd && isset($fieldGroups[$field->ID])) {
$groupStart = $fieldGroups[$field->ID];
$groupStart->EndID = $newField->ID;
$groupStart->write();
}
foreach ($field->DisplayRules() as $customRule) {
$newRule = $customRule->duplicate(false);
$newRule->ParentID = $newField->ID;
$newRule->Version = 0;
$newRule->write();
}
}
}
/**
* Checks child fields to see if any are modified in draft as well. The owner of this extension will still
* use the Versioned method to determine its own status.
*
* @see Versioned::isModifiedOnDraft
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*
* @return boolean|null
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*/
public function isModifiedOnDraft()
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{
foreach ($this->owner->Fields() as $field) {
if ($field->isModifiedOnDraft()) {
return true;
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}
}
}
/**
* @see Versioned::doRevertToLive
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*/
public function onAfterRevertToLive()
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{
foreach ($this->owner->Fields() as $field) {
$field->copyVersionToStage(Versioned::LIVE, Versioned::DRAFT, false);
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$field->writeWithoutVersion();
}
}
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}