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Allow selecting field for email recipient without saving first #42

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Allow selecting field for email recipient without saving first #42

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59 changes: 55 additions & 4 deletions src/Model/ElementForm.php
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Original file line number Diff line number Diff line change
Expand Up @@ -2,16 +2,22 @@

namespace DNADesign\ElementalUserForms\Model;

use SilverStripe\UserForms\Control\UserDefinedFormController;
use SilverStripe\UserForms\UserForm;
use SilverStripe\Control\Controller;
use DNADesign\Elemental\Models\BaseElement;
use DNADesign\ElementalUserForms\Control\ElementFormController;
use SilverStripe\Control\Controller;
use SilverStripe\Control\RequestHandler;
use SilverStripe\Forms\FieldList;
use SilverStripe\Forms\Form;
use SilverStripe\Forms\GridField\GridField;
use SilverStripe\Forms\GridField\GridFieldDetailForm;
use SilverStripe\UserForms\Control\UserDefinedFormController;
use SilverStripe\UserForms\UserForm;

class ElementForm extends BaseElement
{
use UserForm;
use UserForm {
getCMSFields as userFormGetCMSFields;
}

private static $table_name = 'ElementForm';

Expand All @@ -25,6 +31,51 @@ class ElementForm extends BaseElement

private static $inline_editable = false;

/**
* This is a workaround for "Email recipients" functionality. In the userforms module, this
* relies on accessing the current userforms instance (EmailRecipient::getFormParent()) by
* using the LeftAndMain.currentPage session variable. When using an elemental userform, that
* session variable points to the parent page instead of the elemental userform instance.
*/
public function getCMSFields()
{
$this->afterExtending('updateCMSFields', function (FieldList $fields) {
/** @var GridField $recipientsGridField */
$recipientsGridField = $fields->dataFieldByName('EmailRecipients');
/** @var GridFieldDetailForm $detailForm */
$detailForm = $recipientsGridField->getConfig()->getComponentByType(GridFieldDetailForm::class);

// Re-build the email recipients CMS fields with the "form parent" record populated
$detailForm->setItemEditFormCallback(function (Form $form) {
$record = $form->getRecord();

// EmailRecipient::getFormParent() will use these values if set, before falling back to the
// LeftAndMain.currentParent session variable (which won't work for the reasons above)
$record->FormID = $this->ID;
$record->FormClass = $this->ClassName;

// Re-build CMS fields
$form->setFields($record->getCMSFields());
// Re-populate the form
$form->loadDataFrom($record, $record->ID == 0 ? Form::MERGE_IGNORE_FALSEISH : Form::MERGE_DEFAULT);

// Everything below this point is copied from GridFieldDetailForm_ItemRequest::ItemEditForm()

if ($record->ID && !$record->canEdit()) {
// Restrict editing of existing records
$form->makeReadonly();
} elseif (!$record->ID && !$record->canCreate()) {
// Restrict creation of new records
$form->makeReadonly();
}

$form->Fields()->findOrMakeTab('Root')->setTemplate('SilverStripe\\Forms\\CMSTabSet');
});
});

return $this->userFormGetCMSFields();
}

/**
* @return UserForm
*/
Expand Down