refactor how getCMSFields is built to handle no parent form

code/Model/Recipient/EmailRecipient.php

@@ -2,7 +2,6 @@
 
 namespace SilverStripe\UserForms\Model\Recipient;
 
-use SilverStripe\Admin\LeftAndMain;
 use SilverStripe\Assets\FileFinder;
 use SilverStripe\CMS\Controllers\CMSMain;
 use SilverStripe\CMS\Controllers\CMSPageEditController;
@@ -27,9 +26,11 @@ use SilverStripe\Forms\TabSet;
 use SilverStripe\Forms\TextareaField;
 use SilverStripe\Forms\TextField;
 use SilverStripe\ORM\ArrayList;
+use SilverStripe\ORM\DataList;
 use SilverStripe\ORM\DataObject;
 use SilverStripe\ORM\DB;
 use SilverStripe\ORM\FieldType\DBField;
+use SilverStripe\ORM\ValidationResult;
 use SilverStripe\UserForms\Model\EditableFormField;
 use SilverStripe\UserForms\Model\EditableFormField\EditableEmailField;
 use SilverStripe\UserForms\Model\EditableFormField\EditableMultipleOptionField;
@@ -75,7 +76,7 @@ class EmailRecipient extends DataObject
         'CustomRules',
     ];
 
-    private static $cascade_deetes = [
+    private static $cascade_deletes = [
         'CustomRules',
     ];
 
@@ -123,7 +124,7 @@ class EmailRecipient extends DataObject
     }
 
     /**
-     * Get instance of UserDefinedForm when editing in getCMSFields
+     * Get instance of UserForm when editing in getCMSFields
      *
      * @return UserDefinedForm
      */
@@ -132,10 +133,10 @@ class EmailRecipient extends DataObject
         // LeftAndMain::sessionNamespace is protected. @todo replace this with a non-deprecated equivalent.
         $sessionNamespace = $this->config()->get('session_namespace') ?: CMSMain::class;
 
-        $formID = $this->FormID
+        $formID = $this->FormID ?: Controller::curr()->getRequest()->getSession()->get($sessionNamespace . '.currentPage');
-            ? $this->FormID
+        $formClass = $this->FormClass ?: UserDefinedForm::class;
-            : Controller::curr()->getRequest()->getSession()->get($sessionNamespace . '.currentPage');
+
-        return UserDefinedForm::get()->byID($formID);
+        return $formClass::get()->byID($formID);
     }
 
     public function getTitle()
@@ -156,6 +157,9 @@ class EmailRecipient extends DataObject
      */
     protected function getRulesConfig()
     {
+        if (!$this->getFormParent()) {
+            return null;
+        }
         $formFields = $this->getFormParent()->Fields();
 
         $config = GridFieldConfig::create()
@@ -190,122 +194,17 @@ class EmailRecipient extends DataObject
     {
         Requirements::javascript('silverstripe/userforms:client/dist/js/userforms-cms.js');
 
-        // Determine optional field values
-        $form = $this->getFormParent();
-
-        // predefined choices are also candidates
-        $multiOptionFields = EditableMultipleOptionField::get()->filter('ParentID', $form->ID);
-
-        // if they have email fields then we could send from it
-        $validEmailFromFields = EditableEmailField::get()->filter('ParentID', $form->ID);
-
-        // For the subject, only one-line entry boxes make sense
-        $validSubjectFields = ArrayList::create(
-            EditableTextField::get()
-                ->filter('ParentID', $form->ID)
-                ->exclude('Rows:GreaterThan', 1)
-                ->toArray()
-        );
-        $validSubjectFields->merge($multiOptionFields);
-
-
-        // Check valid email-recipient fields
-        if ($this->config()->get('allow_unbound_recipient_fields')) {
-            // To address can only be email fields or multi option fields
-            $validEmailToFields = ArrayList::create($validEmailFromFields->toArray());
-            $validEmailToFields->merge($multiOptionFields);
-        } else {
-            // To address cannot be unbound, so restrict to pre-defined lists
-            $validEmailToFields = $multiOptionFields;
-        }
-
         // Build fieldlist
         $fields = FieldList::create(Tabset::create('Root')->addExtraClass('EmailRecipientForm'));
 
         // Configuration fields
         $fields->addFieldsToTab('Root.EmailDetails', [
-            // Subject
+            $this->getSubjectCMSFields(),
-            FieldGroup::create(
+            $this->getEmailToCMSFields(),
-                TextField::create(
+            $this->getEmailFromCMSFields(),
-                    'EmailSubject',
+            $this->getEmailReplyToCMSFields(),
-                    _t('SilverStripe\\UserForms\\Model\\UserDefinedForm.TYPESUBJECT', 'Type subject')
-                )
-                    ->setAttribute('style', 'min-width: 400px;'),
-                DropdownField::create(
-                    'SendEmailSubjectFieldID',
-                    _t(
-                        'SilverStripe\\UserForms\\Model\\UserDefinedForm.SELECTAFIELDTOSETSUBJECT',
-                        '.. or select a field to use as the subject'
-                    ),
-                    $validSubjectFields->map('ID', 'Title')
-                )->setEmptyString('')
-            )
-                ->setTitle(_t('SilverStripe\\UserForms\\Model\\UserDefinedForm.EMAILSUBJECT', 'Email subject')),
-
-            // To
-            FieldGroup::create(
-                TextField::create(
-                    'EmailAddress',
-                    _t('SilverStripe\\UserForms\\Model\\UserDefinedForm.TYPETO', 'Type to address')
-                )
-                    ->setAttribute('style', 'min-width: 400px;'),
-                DropdownField::create(
-                    'SendEmailToFieldID',
-                    _t(
-                        'SilverStripe\\UserForms\\Model\\UserDefinedForm.ORSELECTAFIELDTOUSEASTO',
-                        '.. or select a field to use as the to address'
-                    ),
-                    $validEmailToFields->map('ID', 'Title')
-                )->setEmptyString(' ')
-            )
-                ->setTitle(_t('SilverStripe\\UserForms\\Model\\UserDefinedForm.SENDEMAILTO', 'Send email to'))
-                ->setDescription(_t(
-                    'SilverStripe\\UserForms\\Model\\UserDefinedForm.SENDEMAILTO_DESCRIPTION',
-                    'You may enter multiple email addresses as a comma separated list.'
-                )),
-
-
-            // From
-            TextField::create(
-                'EmailFrom',
-                _t('SilverStripe\\UserForms\\Model\\UserDefinedForm.FROMADDRESS', 'Send email from')
-            )
-                ->setDescription(_t(
-                    'SilverStripe\\UserForms\\Model\\UserDefinedForm.EmailFromContent',
-                    "The from address allows you to set who the email comes from. On most servers this ".
-                    "will need to be set to an email address on the same domain name as your site. ".
-                    "For example on yoursite.com the from address may need to be something@yoursite.com. ".
-                    "You can however, set any email address you wish as the reply to address."
-                )),
-
-
-            // Reply-To
-            FieldGroup::create(
-                TextField::create('EmailReplyTo', _t(
-                    'SilverStripe\\UserForms\\Model\\UserDefinedForm.TYPEREPLY',
-                    'Type reply address'
-                ))
-                    ->setAttribute('style', 'min-width: 400px;'),
-                DropdownField::create(
-                    'SendEmailFromFieldID',
-                    _t(
-                        'SilverStripe\\UserForms\\Model\\UserDefinedForm.ORSELECTAFIELDTOUSEASFROM',
-                        '.. or select a field to use as reply to address'
-                    ),
-                    $validEmailFromFields->map('ID', 'Title')
-                )->setEmptyString(' ')
-            )
-                ->setTitle(_t(
-                    'SilverStripe\\UserForms\\Model\\UserDefinedForm.REPLYADDRESS',
-                    'Email for reply to'
-                ))
-                ->setDescription(_t(
-                    'SilverStripe\\UserForms\\Model\\UserDefinedForm.REPLYADDRESS_DESCRIPTION',
-                    'The email address which the recipient is able to \'reply\' to.'
-                ))
         ]);
-
+        $fields->fieldByName('Root.EmailDetails')->setTitle(_t(__CLASS__ . '.EMAILDETAILSTAB', 'Email Details'));
-        $fields->fieldByName('Root.EmailDetails')->setTitle(_t(__CLASS__.'.EMAILDETAILSTAB', 'Email Details'));
 
         // Only show the preview link if the recipient has been saved.
         if (!empty($this->EmailTemplate)) {
@@ -375,7 +274,7 @@ class EmailRecipient extends DataObject
             );
         }
 
-        $fields->fieldByName('Root.EmailContent')->setTitle(_t(__CLASS__.'.EMAILCONTENTTAB', 'Email Content'));
+        $fields->fieldByName('Root.EmailContent')->setTitle(_t(__CLASS__ . '.EMAILCONTENTTAB', 'Email Content'));
 
         // Custom rules for sending this field
         $grid = GridField::create(
@@ -393,14 +292,20 @@ class EmailRecipient extends DataObject
                 'CustomRulesCondition',
                 _t('SilverStripe\\UserForms\\Model\\UserDefinedForm.SENDIF', 'Send condition'),
                 [
-                    'Or' => _t('SilverStripe\\UserForms\\Model\\UserDefinedForm.SENDIFOR', 'Any conditions are true'),
+                    'Or' => _t(
-                    'And' => _t('SilverStripe\\UserForms\\Model\\UserDefinedForm.SENDIFAND', 'All conditions are true')
+                        'SilverStripe\\UserForms\\Model\\UserDefinedForm.SENDIFOR',
+                        'Any conditions are true'
+                    ),
+                    'And' => _t(
+                        'SilverStripe\\UserForms\\Model\\UserDefinedForm.SENDIFAND',
+                        'All conditions are true'
+                    )
                 ]
             ),
             $grid
         ]);
 
-        $fields->fieldByName('Root.CustomRules')->setTitle(_t(__CLASS__.'.CUSTOMRULESTAB', 'Custom Rules'));
+            $fields->fieldByName('Root.CustomRules')->setTitle(_t(__CLASS__ . '.CUSTOMRULESTAB', 'Custom Rules'));
 
         $this->extend('updateCMSFields', $fields);
         return $fields;
@@ -619,4 +524,183 @@ class EmailRecipient extends DataObject
         }
         return $result;
     }
+
+    /**
+     * @return FieldGroup|TextField
+     */
+    protected function getSubjectCMSFields()
+    {
+        $subjectTextField = TextField::create(
+            'EmailSubject',
+            _t('SilverStripe\\UserForms\\Model\\UserDefinedForm.TYPESUBJECT', 'Type subject')
+        )
+            ->setAttribute('style', 'min-width: 400px;');
+
+        if ($this->getFormParent() && $this->getValidSubjectFields()) {
+            return FieldGroup::create(
+                $subjectTextField,
+                DropdownField::create(
+                    'SendEmailSubjectFieldID',
+                    _t(
+                        'SilverStripe\\UserForms\\Model\\UserDefinedForm.SELECTAFIELDTOSETSUBJECT',
+                        '.. or select a field to use as the subject'
+                    ),
+                    $this->getValidSubjectFields()->map('ID', 'Title')
+                )->setEmptyString('')
+            )
+                ->setTitle(_t('SilverStripe\\UserForms\\Model\\UserDefinedForm.EMAILSUBJECT', 'Email subject'));
+        } else {
+            return $subjectTextField;
+        }
+    }
+
+    /**
+     * @return FieldGroup|TextField
+     */
+    protected function getEmailToCMSFields()
+    {
+        $emailToTextField = TextField::create(
+            'EmailAddress',
+            _t('SilverStripe\\UserForms\\Model\\UserDefinedForm.TYPETO', 'Type to address')
+        )
+            ->setAttribute('style', 'min-width: 400px;');
+
+        if ($this->getFormParent() && $this->getValidEmailToFields()) {
+            return FieldGroup::create(
+                $emailToTextField,
+                DropdownField::create(
+                    'SendEmailToFieldID',
+                    _t(
+                        'SilverStripe\\UserForms\\Model\\UserDefinedForm.ORSELECTAFIELDTOUSEASTO',
+                        '.. or select a field to use as the to address'
+                    ),
+                    $this->getValidEmailToFields()->map('ID', 'Title')
+                )->setEmptyString(' ')
+            )
+                ->setTitle(_t('SilverStripe\\UserForms\\Model\\UserDefinedForm.SENDEMAILTO', 'Send email to'))
+                ->setDescription(_t(
+                    'SilverStripe\\UserForms\\Model\\UserDefinedForm.SENDEMAILTO_DESCRIPTION',
+                    'You may enter multiple email addresses as a comma separated list.'
+                ));
+        } else {
+            return $emailToTextField;
+        }
+    }
+
+    /**
+     * @return TextField
+     */
+    protected function getEmailFromCMSFields()
+    {
+        return TextField::create(
+            'EmailFrom',
+            _t('SilverStripe\\UserForms\\Model\\UserDefinedForm.FROMADDRESS', 'Send email from')
+        )
+            ->setDescription(_t(
+                'SilverStripe\\UserForms\\Model\\UserDefinedForm.EmailFromContent',
+                "The from address allows you to set who the email comes from. On most servers this " .
+                "will need to be set to an email address on the same domain name as your site. " .
+                "For example on yoursite.com the from address may need to be something@yoursite.com. " .
+                "You can however, set any email address you wish as the reply to address."
+            ));
+    }
+
+    /**
+     * @return FieldGroup|TextField
+     */
+    protected function getEmailReplyToCMSFields()
+    {
+        $replyToTextField = TextField::create('EmailReplyTo', _t(
+            'SilverStripe\\UserForms\\Model\\UserDefinedForm.TYPEREPLY',
+            'Type reply address'
+        ))
+            ->setAttribute('style', 'min-width: 400px;');
+        if ($this->getFormParent() && $this->getValidEmailFromFields()) {
+            return FieldGroup::create(
+                $replyToTextField,
+                DropdownField::create(
+                    'SendEmailFromFieldID',
+                    _t(
+                        'SilverStripe\\UserForms\\Model\\UserDefinedForm.ORSELECTAFIELDTOUSEASFROM',
+                        '.. or select a field to use as reply to address'
+                    ),
+                    $this->getValidEmailFromFields()->map('ID', 'Title')
+                )->setEmptyString(' ')
+            )
+                ->setTitle(_t(
+                    'SilverStripe\\UserForms\\Model\\UserDefinedForm.REPLYADDRESS',
+                    'Email for reply to'
+                ))
+                ->setDescription(_t(
+                    'SilverStripe\\UserForms\\Model\\UserDefinedForm.REPLYADDRESS_DESCRIPTION',
+                    'The email address which the recipient is able to \'reply\' to.'
+                ));
+        } else {
+            return $replyToTextField;
+        }
+    }
+
+    /**
+     * @return DataList|null
+     */
+    protected function getMultiOptionFields()
+    {
+        if (!$form = $this->getFormParent()) {
+            return null;
+        }
+        return EditableMultipleOptionField::get()->filter('ParentID', $form->ID);
+    }
+
+    /**
+     * @return ArrayList|null
+     */
+    protected function getValidSubjectFields()
+    {
+        if (!$form = $this->getFormParent()) {
+            return null;
+        }
+        // For the subject, only one-line entry boxes make sense
+        $validSubjectFields = ArrayList::create(
+            EditableTextField::get()
+                ->filter('ParentID', $form->ID)
+                ->exclude('Rows:GreaterThan', 1)
+                ->toArray()
+        );
+        $validSubjectFields->merge($this->getMultiOptionFields());
+        return $validSubjectFields;
+    }
+
+    /**
+     * @return DataList|null
+     */
+    protected function getValidEmailFromFields()
+    {
+        if (!$form = $this->getFormParent()) {
+            return null;
+        }
+
+        // if they have email fields then we could send from it
+        return EditableEmailField::get()->filter('ParentID', $form->ID);
+    }
+
+    /**
+     * @return ArrayList|DataList|null
+     */
+    protected function getValidEmailToFields()
+    {
+        if ($this->getFormParent()) {
+            return null;
+        }
+
+        // Check valid email-recipient fields
+        if ($this->config()->get('allow_unbound_recipient_fields')) {
+            // To address can only be email fields or multi option fields
+            $validEmailToFields = ArrayList::create($this->getValidEmailFromFields()->toArray());
+            $validEmailToFields->merge($this->getMultiOptionFields());
+            return $validEmailToFields;
+        } else {
+            // To address cannot be unbound, so restrict to pre-defined lists
+            return $this->getMultiOptionFields();
+        }
+    }
 }