diff --git a/src/Controller/AppController.php b/src/Controller/AppController.php
index 07ec3aa..dacb95f 100644
--- a/src/Controller/AppController.php
+++ b/src/Controller/AppController.php
@@ -110,6 +110,9 @@ class AppController extends Controller
         $this->ACL->checkAccess();
         $this->set('menu', $this->ACL->getMenu());
         $this->set('ajax', $this->request->is('ajax'));
+        if (!empty($this->request->getHeader('X-Request-Html-On-Failure'))) {
+            $this->ajax_with_html_on_failure = true;
+        }
         $this->request->getParam('prefix');
         $this->set('darkMode', !empty(Configure::read('Cerebrate.dark')));
     }
diff --git a/src/Controller/Component/CRUDComponent.php b/src/Controller/Component/CRUDComponent.php
index 20755c4..3ec060e 100644
--- a/src/Controller/Component/CRUDComponent.php
+++ b/src/Controller/Component/CRUDComponent.php
@@ -81,13 +81,16 @@ class CRUDComponent extends Component
                 $patchEntityParams['fields'] = $params['fields'];
             }
             $data = $this->Table->patchEntity($data, $input, $patchEntityParams);
-            if ($this->Table->save($data)) {
+            $savedData = $this->Table->save($data);
+            if ($savedData !== false) {
                 $message = __('{0} added.', $this->ObjectAlias);
                 if (!empty($input['metaFields'])) {
                     $this->saveMetaFields($data->id, $input);
                 }
                 if ($this->Controller->ParamHandler->isRest()) {
                     $this->Controller->restResponsePayload = $this->RestResponse->viewData($data, 'json');
+                } else if ($this->Controller->ParamHandler->isAjax()) {
+                    $this->Controller->ajaxResponsePayload = $this->Controller->RestResponse->ajaxSuccessResponse($this->ObjectAlias, 'add', $savedData, $message);
                 } else {
                     $this->Controller->Flash->success($message);
                     if (!empty($params['displayOnSuccess'])) {
@@ -103,6 +106,7 @@ class CRUDComponent extends Component
                     }
                 }
             } else {
+                $this->Controller->isFailResponse = true;
                 $validationMessage = $this->prepareValidationError($data);
                 $message = __(
                     '{0} could not be added.{1}',
@@ -110,7 +114,8 @@ class CRUDComponent extends Component
                     empty($validationMessage) ? '' : ' ' . __('Reason:{0}', $validationMessage)
                 );
                 if ($this->Controller->ParamHandler->isRest()) {
-
+                } else if ($this->Controller->ParamHandler->isAjax()) {
+                    $this->Controller->ajaxResponsePayload = $this->Controller->RestResponse->ajaxFailResponse($this->ObjectAlias, 'add', $data, $message, $validationMessage);
                 } else {
                     $this->Controller->Flash->error($message);
                 }
diff --git a/src/Controller/UsersController.php b/src/Controller/UsersController.php
index d1bbcbd..7d39103 100644
--- a/src/Controller/UsersController.php
+++ b/src/Controller/UsersController.php
@@ -25,6 +25,10 @@ class UsersController extends AppController
         $this->CRUD->add();
         if ($this->ParamHandler->isRest()) {
             return $this->restResponsePayload;
+        } else if ($this->ParamHandler->isAjax() && $this->request->is(['post', 'put'])) {
+            if (empty($this->isFailResponse) || empty($this->ajax_with_html_on_failure)) {
+                return $this->ajaxResponsePayload;
+            }
         }
         $dropdownData = [
             'role' => $this->Users->Roles->find('list', [
diff --git a/templates/element/genericElements/Form/genericForm.php b/templates/element/genericElements/Form/genericForm.php
index 2217ca7..6e642ff 100644
--- a/templates/element/genericElements/Form/genericForm.php
+++ b/templates/element/genericElements/Form/genericForm.php
@@ -12,6 +12,7 @@
            - use these to define dynamic form fields, or anything that will feed into the regular fields via JS population
      * - submit: The submit button itself. By default it will simply submit to the form as defined via the 'model' field
      */
+    $this->Form->setConfig('errorClass', 'is-invalid');
     $modelForForm = empty($data['model']) ?
         h(\Cake\Utility\Inflector::singularize(\Cake\Utility\Inflector::classify($this->request->getParam('controller')))) :
         h($data['model']);
@@ -35,11 +36,14 @@
         'select' => '<select name="{{name}}" {{attrs}}>{{content}}</select>',
         'checkbox' => '<input type="checkbox" name="{{name}}" value="{{value}}"{{attrs}}>',
         'checkboxFormGroup' => '{{label}}',
-        'formGroup' => '<div class="col-sm-2 col-form-label" {{attrs}}>{{label}}</div><div class="col-sm-10">{{input}}</div>',
+        'formGroup' => '<div class="col-sm-2 col-form-label" {{attrs}}>{{label}}</div><div class="col-sm-10">{{input}}{{error}}</div>',
         'nestingLabel' => '{{hidden}}<div class="col-sm-2 col-form-label">{{text}}</div><div class="col-sm-10">{{input}}</div>',
         'option' => '<option value="{{value}}"{{attrs}}>{{text}}</option>',
         'optgroup' => '<optgroup label="{{label}}"{{attrs}}>{{content}}</optgroup>',
-        'select' => '<select name="{{name}}"{{attrs}}>{{content}}</select>'
+        'select' => '<select name="{{name}}"{{attrs}}>{{content}}</select>',
+        'error' => '<div class="error-message invalid-feedback d-block">{{content}}</div>',
+        'errorList' => '<ul>{{content}}</ul>',
+        'errorItem' => '<li>{{text}}</li>',
     ];
     if (!empty($data['fields'])) {
         foreach ($data['fields'] as $fieldData) {
@@ -49,6 +53,7 @@
                 }
             }
             // we reset the template each iteration as individual fields might override the defaults.
+            $this->Form->setConfig($default_template);
             $this->Form->setTemplates($default_template);
             if (isset($fieldData['requirements']) && !$fieldData['requirements']) {
                 continue;
diff --git a/templates/element/genericElements/Form/submitButton.php b/templates/element/genericElements/Form/submitButton.php
index 3656e70..9a2a82c 100644
--- a/templates/element/genericElements/Form/submitButton.php
+++ b/templates/element/genericElements/Form/submitButton.php
@@ -3,8 +3,8 @@
         echo sprintf(
             '%s',
             sprintf(
-                '<button id="submitButton" class="btn btn-primary" onClick="%s" autofocus>%s</button>',
-                "$('#form-" . h($formRandomValue) . "').submit()",
+                '<button id="submitButton" class="btn btn-primary" data-form-id="%s" autofocus>%s</button>',
+                '#form-' . h($formRandomValue),
                 __('Submit')
             )
         );
diff --git a/templates/element/genericElements/ListTopBar/element_simple.php b/templates/element/genericElements/ListTopBar/element_simple.php
index 1713b48..3ecd987 100644
--- a/templates/element/genericElements/ListTopBar/element_simple.php
+++ b/templates/element/genericElements/ListTopBar/element_simple.php
@@ -2,7 +2,7 @@
     if (!isset($data['requirement']) || $data['requirement']) {
         if (!empty($data['popover_url'])) {
             $onClick = sprintf(
-                'onClick="populateAndLoadModal(%s)"',
+                'onClick="openModalFromURL(%s)"',
                 sprintf("'%s'", h($data['popover_url']))
             );
         }
@@ -67,3 +67,11 @@
         );
     }
 ?>
+
+<script>
+    function openModalFromURL(url) {
+        UI.modalFromURL(url, (data) => {
+            UI.reload('<?= $this->Url->build(['action' => 'index']); ?>', $('#table-container-<?= $tableRandomValue ?>'), $('#table-container-<?= $tableRandomValue ?> table.table'))
+        })
+    }
+</script>
\ No newline at end of file
diff --git a/templates/element/genericElements/ListTopBar/group_simple.php b/templates/element/genericElements/ListTopBar/group_simple.php
index cdc87d7..0f286ab 100644
--- a/templates/element/genericElements/ListTopBar/group_simple.php
+++ b/templates/element/genericElements/ListTopBar/group_simple.php
@@ -2,7 +2,7 @@
     if (!isset($data['requirement']) || $data['requirement']) {
         $elements = '';
         foreach ($data['children'] as $element) {
-            $elements .= $this->element('/genericElements/ListTopBar/element_' . (empty($element['type']) ? 'simple' : h($element['type'])), array('data' => $element));
+            $elements .= $this->element('/genericElements/ListTopBar/element_' . (empty($element['type']) ? 'simple' : h($element['type'])), array('data' => $element, 'tableRandomValue' => $tableRandomValue));
         }
         echo sprintf(
             '<div %s class="btn-group mr-2" role="group" aria-label="button-group">%s</div>',
diff --git a/templates/layout/default.php b/templates/layout/default.php
index d42f2cd..7f2d993 100644
--- a/templates/layout/default.php
+++ b/templates/layout/default.php
@@ -66,7 +66,7 @@ $cakeDescription = 'Cerebrate';
         </div>
     </main>
     <div id="mainModal" class="modal fade" tabindex="-1" role="dialog" aria-labelledby="mediumModalLabel" aria-hidden="true"></div>
-    <div id="mainToastContainer" style="position: absolute; top: 15px; right: 15px;"></div>
+    <div id="mainToastContainer" style="position: absolute; top: 15px; right: 15px; z-index: 1080"></div>
     <div id="mainModalContainer"></div>
 </body>
 </html>
diff --git a/webroot/js/api-helper.js b/webroot/js/api-helper.js
index d6237ad..b062f42 100644
--- a/webroot/js/api-helper.js
+++ b/webroot/js/api-helper.js
@@ -1,19 +1,27 @@
 class AJAXApi {
-    static genericRequestHeaders = new Headers({
+    static genericRequestHeaders = {
         'X-Requested-With': 'XMLHttpRequest'
-    });
+    };
     static genericRequestConfigGET = {
-        headers: AJAXApi.genericRequestHeaders
+        headers: new Headers(Object.assign({}, AJAXApi.genericRequestHeaders))
     }
     static genericRequestConfigPOST = {
-        headers: AJAXApi.genericRequestHeaders,
+        headers: new Headers(Object.assign({}, AJAXApi.genericRequestHeaders)),
         redirect: 'manual',
         method: 'POST',
     }
+    static renderHTMLOnFailureHeader = {
+        name: 'X-Request-HTML-On-Failure',
+        value: '1'
+    }
 
     static defaultOptions = {
         provideFeedback: true,
         statusNode: false,
+        renderedHTMLOnFailureRequested: false,
+        errorToast: {
+            delay: 10000
+        }
     }
     options = {}
     loadingOverlay = false
@@ -23,12 +31,15 @@ class AJAXApi {
         this.mergeOptions(options)
     }
 
-    provideFeedback(options, isError=false) {
-        if (this.options.provideFeedback) {
-            UI.toast(options)
-        } else {
-            if (isError) {
-                console.error(options.body)
+    provideFeedback(toastOptions, isError=false, skip=false) {
+        const alteredToastOptions = isError ? Object.assign({}, AJAXApi.defaultOptions.errorToast, toastOptions) : toastOptions
+        if (!skip) {
+            if (this.options.provideFeedback) {
+                UI.toast(alteredToastOptions)
+            } else {
+                if (isError) {
+                    console.error(alteredToastOptions.body)
+                }
             }
         }
     }
@@ -56,13 +67,19 @@ class AJAXApi {
         return tmpApi.fetchForm(url, constAlteredOptions.skipRequestHooks)
     }
 
+    static async quickPostForm(form, dataToMerge={}, options={}) {
+        const constAlteredOptions = Object.assign({}, {}, options)
+        const tmpApi = new AJAXApi(constAlteredOptions)
+        return tmpApi.postForm(form, dataToMerge, constAlteredOptions.skipRequestHooks)
+    }
+
     static async quickFetchAndPostForm(url, dataToMerge={}, options={}) {
         const constAlteredOptions = Object.assign({}, {}, options)
         const tmpApi = new AJAXApi(constAlteredOptions)
         return tmpApi.fetchAndPostForm(url, dataToMerge, constAlteredOptions.skipRequestHooks)
     }
 
-    async fetchURL(url, skipRequestHooks=false) {
+    async fetchURL(url, skipRequestHooks=false, skipFeedback=false) {
         if (!skipRequestHooks) {
             this.beforeRequest()
         }
@@ -76,14 +93,14 @@ class AJAXApi {
             this.provideFeedback({
                 variant: 'success',
                 title: 'URL fetched',
-            });
+            }, false, skipFeedback);
             toReturn = data;
         } catch (error) {
             this.provideFeedback({
                 variant: 'danger',
                 title: 'There has been a problem with the operation',
                 body: error
-            }, true);
+            }, true, skipFeedback);
             toReturn = Promise.reject(error);
         } finally {
             if (!skipRequestHooks) {
@@ -93,7 +110,7 @@ class AJAXApi {
         return toReturn
     }
 
-    async fetchForm(url, skipRequestHooks=false) {
+    async fetchForm(url, skipRequestHooks=false, skipFeedback=false) {
         if (!skipRequestHooks) {
             this.beforeRequest()
         }
@@ -116,7 +133,74 @@ class AJAXApi {
                 variant: 'danger',
                 title: 'There has been a problem with the operation',
                 body: error
-            }, true);
+            }, true, skipFeedback);
+            toReturn = Promise.reject(error);
+        } finally {
+            if (!skipRequestHooks) {
+                this.afterRequest()
+            }
+        }
+        return toReturn
+    }
+
+    async postForm(form, dataToMerge={}, skipRequestHooks=false, skipFeedback=false) {
+        if (!skipRequestHooks) {
+            this.beforeRequest()
+        }
+        let toReturn
+        let feedbackShown = false
+        try {
+            try {
+                let formData = new FormData(form)
+                formData = AJAXApi.mergeFormData(formData, dataToMerge)
+                let requestConfig = AJAXApi.genericRequestConfigPOST
+                if (this.options.renderedHTMLOnFailureRequested) {
+                    requestConfig.headers.append(AJAXApi.renderHTMLOnFailureHeader.name, AJAXApi.renderHTMLOnFailureHeader.value)
+                }
+                let options = {
+                    ...requestConfig,
+                    body: formData,
+                };
+                const response = await fetch(form.action, options);
+                if (!response.ok) {
+                    throw new Error('Network response was not ok')
+                }
+                const clonedResponse = response.clone()
+                try {
+                    const data = await response.json()
+                    if (data.success) {
+                        this.provideFeedback({
+                            variant: 'success',
+                            body: data.message
+                        }, false, skipFeedback);
+                        toReturn = data;
+                    } else {
+                        this.provideFeedback({
+                            variant: 'danger',
+                            title: 'There has been a problem with the operation',
+                            body: data.errors
+                        }, true, skipFeedback);
+                        feedbackShown = true
+                        toReturn = Promise.reject(data.errors);
+                    }
+                } catch (error) { // could not parse JSON
+                    if (this.options.renderedHTMLOnFailureRequested) {
+                        const data = await clonedResponse.text();
+                        toReturn = {
+                            success: 0,
+                            html: data,
+                        }
+                    }
+                }
+            } catch (error) {
+                this.provideFeedback({
+                    variant: 'danger',
+                    title: 'There has been a problem with the operation',
+                    body: error
+                }, true, feedbackShown);
+                toReturn = Promise.reject(error);
+            }
+        } catch (error) {
             toReturn = Promise.reject(error);
         } finally {
             if (!skipRequestHooks) {
@@ -132,41 +216,8 @@ class AJAXApi {
         }
         let toReturn
         try {
-            const form = await this.fetchForm(url, true);
-            try {
-                let formData = new FormData(form)
-                formData = AJAXApi.mergeFormData(formData, dataToMerge)
-                let options = {
-                    ...AJAXApi.genericRequestConfigPOST,
-                    body: formData,
-                };
-                const response = await fetch(form.action, options);
-                if (!response.ok) {
-                    throw new Error('Network response was not ok')
-                }
-                const data = await response.json();
-                if (data.success) {
-                    this.provideFeedback({
-                        variant: 'success',
-                        body: data.message
-                    });
-                    toReturn = data;
-                } else {
-                    this.provideFeedback({
-                        variant: 'danger',
-                        title: 'There has been a problem with the operation',
-                        body: data.errors
-                    }, true);
-                    toReturn = Promise.reject(error);
-                }
-            } catch (error) {
-                this.provideFeedback({
-                    variant: 'danger',
-                    title: 'There has been a problem with the operation',
-                    body: error
-                }, true);
-                toReturn = Promise.reject(error);
-            }
+            const form = await this.fetchForm(url, true, true);
+            toReturn = await this.postForm(form, dataToMerge, true, true)
         } catch (error) {
             toReturn = Promise.reject(error);
         } finally {
diff --git a/webroot/js/bootstrap-helper.js b/webroot/js/bootstrap-helper.js
index a27ac4b..f602c9c 100644
--- a/webroot/js/bootstrap-helper.js
+++ b/webroot/js/bootstrap-helper.js
@@ -16,6 +16,22 @@ class UIFactory {
         return theModal
     }
 
+    /* Display a modal based on provided options */
+    modalFromURL (url, successCallback, failCallback) {
+        return AJAXApi.quickFetchURL(url).then((modalHTML) => {
+            const theModal = new ModalFactory({
+                rawHTML: modalHTML,
+                replaceFormSubmissionByAjax: true,
+                successCallback: successCallback !== undefined ? successCallback : () => {},
+                failCallback: failCallback !== undefined ? failCallback : (errorMessage) => {},
+            });
+            theModal.makeModal(modalHTML)
+            theModal.show()
+            theModal.$modal.data('modalObject', theModal)
+            return theModal
+        })
+    }
+
     /* Fetch HTML from the provided URL and override content of $container. $statusNode allows to specify another HTML node to display the loading */
     reload (url, $container, $statusNode=null) {
         $container = $($container)
@@ -26,7 +42,7 @@ class UIFactory {
         AJAXApi.quickFetchURL(url, {
             statusNode: $statusNode[0]
         }).then((data) => {
-            $container[0].outerHTML = data
+            $container.replaceWith(data)
         })
     }
 }
@@ -143,6 +159,7 @@ class ModalFactory {
         titleHtml: false,
         body: false,
         bodyHtml: false,
+        rawHTML: false,
         variant: '',
         modalClass: [],
         headerClass: [],
@@ -160,6 +177,8 @@ class ModalFactory {
         error: function() {},
         shownCallback: function() {},
         hiddenCallback: function() {},
+        successCallback: function() {},
+        replaceFormSubmissionByAjax: false
     }
 
     static availableType = [
@@ -190,6 +209,9 @@ class ModalFactory {
                 })
                 .on('shown.bs.modal', function () {
                     that.options.shownCallback()
+                    if (that.options.replaceFormSubmissionByAjax) {
+                        that.replaceFormSubmissionByAjax()
+                    }
                 })
         }
     }
@@ -203,11 +225,11 @@ class ModalFactory {
     }
 
     isValid() {
-        return this.options.title !== false || this.options.body !== false || this.options.titleHtml !== false || this.options.bodyHtml !== false
+        return this.options.title !== false || this.options.body !== false || this.options.titleHtml !== false || this.options.bodyHtml !== false || this.options.rawHTML !== false
     }
 
     buildModal() {
-        var $modal = $('<div class="modal fade" tabindex="-1" aria-hidden="true"/>')
+        const $modal = $('<div class="modal fade" tabindex="-1" aria-hidden="true"/>')
         if (this.options.id !== false) {
             $modal.attr('id', this.options.id)
             $modal.attr('aria-labelledby', this.options.id)
@@ -215,37 +237,42 @@ class ModalFactory {
         if (this.options.modalClass !== false) {
             $modal.addClass(this.options.modalClass)
         }
-        var $modalDialog = $('<div class="modal-dialog"/>')
-        var $modalContent = $('<div class="modal-content"/>')
-        if (this.options.title !== false || this.options.titleHtml !== false) {
-            var $modalHeader = $('<div class="modal-header"/>')
-            var $modalHeaderText
-            if (this.options.titleHtml !== false) {
-                $modalHeaderText = $('<div/>').html(this.options.titleHtml);
-            } else {
-                $modalHeaderText = $('<h5 class="modal-title"/>').text(this.options.title)
+        let $modalDialog
+        if (this.options.rawHTML) {
+            $modalDialog = $(this.options.rawHTML)
+        } else {
+            $modalDialog = $('<div class="modal-dialog"/>')
+            const $modalContent = $('<div class="modal-content"/>')
+            if (this.options.title !== false || this.options.titleHtml !== false) {
+                const $modalHeader = $('<div class="modal-header"/>')
+                let $modalHeaderText
+                if (this.options.titleHtml !== false) {
+                    $modalHeaderText = $('<div/>').html(this.options.titleHtml);
+                } else {
+                    $modalHeaderText = $('<h5 class="modal-title"/>').text(this.options.title)
+                }
+                $modalHeader.append($modalHeaderText, ModalFactory.getCloseButton())
+                $modalContent.append($modalHeader)
             }
-            $modalHeader.append($modalHeaderText, ModalFactory.getCloseButton())
-            $modalContent.append($modalHeader)
-        }
-
-        if (this.options.body !== false || this.options.bodyHtml !== false) {
-            var $modalBody = $('<div class="modal-body"/>')
-            var $modalBodyText
-            if (this.options.bodyHtml !== false) {
-                $modalBodyText = $('<div/>').html(this.options.bodyHtml);
-            } else {
-                $modalBodyText = $('<div/>').text(this.options.body)
+    
+            if (this.options.body !== false || this.options.bodyHtml !== false) {
+                const $modalBody = $('<div class="modal-body"/>')
+                let $modalBodyText
+                if (this.options.bodyHtml !== false) {
+                    $modalBodyText = $('<div/>').html(this.options.bodyHtml);
+                } else {
+                    $modalBodyText = $('<div/>').text(this.options.body)
+                }
+                $modalBody.append($modalBodyText)
+                $modalContent.append($modalBody)
             }
-            $modalBody.append($modalBodyText)
-            $modalContent.append($modalBody)
+    
+            const $modalFooter = $('<div class="modal-footer"/>')
+            $modalFooter.append(this.getFooterBasedOnType())
+            $modalContent.append($modalFooter)
+    
+            $modalDialog.append($modalContent)
         }
-
-        var $modalFooter = $('<div class="modal-footer"/>')
-        $modalFooter.append(this.getFooterBasedOnType())
-        $modalContent.append($modalFooter)
-
-        $modalDialog.append($modalContent)
         $modal.append($modalDialog)
         return $modal
     }
@@ -270,49 +297,81 @@ class ModalFactory {
     getFooterConfirm() {
         let variant = this.options.type.split('-')[1]
         variant = variant !== undefined ? variant : 'primary'
-        return [
-            $('<button type="button" class="btn btn-secondary" data-dismiss="modal"></button>')
+        const $buttonCancel = $('<button type="button" class="btn btn-secondary" data-dismiss="modal"></button>')
                 .text(this.options.cancelText)
                 .click(
                     (evt) => {
                         this.options.cancel(() => { this.hide() }, this, evt)
                     }
                 )
-                .attr('data-dismiss', (this.options.closeManually || !this.options.closeOnSuccess) ? '' : 'modal'),
-            $('<button type="button" class="btn"></button>')
+                .attr('data-dismiss', (this.options.closeManually || !this.options.closeOnSuccess) ? '' : 'modal')
+
+        const $buttonConfirm = $('<button type="button" class="btn"></button>')
                 .addClass('btn-' + variant)
                 .text(this.options.confirmText)
-                .click(
-                    (evt) => {
-                        let confirmFunction = this.options.confirm
-                        if (this.options.APIConfirm) {
-                            const tmpApi = new AJAXApi({
-                                statusNode: evt.target
-                            })
-                            confirmFunction = () => { return this.options.APIConfirm(tmpApi) }
-                        }
-                        let confirmResult = confirmFunction(() => { this.hide() }, this, evt)
-                        if (confirmResult === undefined) {
-                            this.hide()
-                        } else {
-                            confirmResult.then(() => {
-                                if (this.options.closeOnSuccess) {
-                                    this.hide()
-                                }
-                            })
-                            .catch(() => {
-                                this.options.error(() => { this.hide() }, this, evt)
-                            })
-                        }
-                    }
-                )
+                .click(this.getConfirmationHandlerFunction())
                 .attr('data-dismiss', (this.options.closeManually || this.options.closeOnSuccess) ? '' : 'modal')
-        ]
+        return [$buttonCancel, $buttonConfirm]
     }
 
     static getCloseButton() {
         return $(ModalFactory.closeButtonHtml)
     }
+
+    getConfirmationHandlerFunction() {
+        return (evt) => {
+            let confirmFunction = this.options.confirm
+            if (this.options.APIConfirm) {
+                const tmpApi = new AJAXApi({
+                    statusNode: evt.target
+                })
+                confirmFunction = () => { return this.options.APIConfirm(tmpApi) }
+            }
+            let confirmResult = confirmFunction(() => { this.hide() }, this, evt)
+            if (confirmResult === undefined) {
+                this.hide()
+            } else {
+                confirmResult.then((data) => {
+                    if (this.options.closeOnSuccess) {
+                        this.hide()
+                    }
+                })
+                .catch(() => {
+                    this.options.error(() => { this.hide() }, this, evt)
+                })
+            }
+        }
+    }
+
+    replaceFormSubmissionByAjax() {
+        const $submitButton = this.$modal.find('.modal-footer #submitButton')
+        const formID = $submitButton.data('form-id')
+        let $form
+        if (formID) {
+            $form = $(formID)
+        } else {
+            $form = this.$modal.find('form')
+        }
+
+        this.options.APIConfirm = (tmpApi) => {
+            tmpApi.mergeOptions({renderedHTMLOnFailureRequested: true})
+            return tmpApi.postForm($form[0])
+                .then((data) => {
+                    if (data.success) {
+                        this.options.successCallback(data)
+                    } else { // Validation error, replace modal content with new html
+                        this.$modal.html(data.html)
+                        this.replaceFormSubmissionByAjax()
+                        return Promise.reject('Validation error');
+                    }
+                })
+                .catch((errorMessage, response) => {
+                    this.options.failCallback(errorMessage)
+                    return Promise.reject(errorMessage);
+                })
+        }
+        $submitButton.click(this.getConfirmationHandlerFunction())
+    }
 }
 
 class OverlayFactory {