Update form validator to be able to check email and submit are present columns

[MAILPOET-2754]

assets/js/src/form_editor/store/controls.jsx

@@ -7,6 +7,7 @@ import formatCustomFieldBlockName from '../blocks/format_custom_field_block_name
 import getCustomFieldBlockSettings from '../blocks/custom_fields_blocks.jsx';
 import { registerCustomFieldBlock } from '../blocks/blocks.jsx';
 import mapFormDataBeforeSaving from './map_form_data_before_saving.jsx';
+import findBlock from './find_block.jsx';
 
 const formatApiErrorMessage = (response) => {
   let errorMessage = null;
@@ -17,21 +18,6 @@ const formatApiErrorMessage = (response) => {
   return errorMessage;
 };
 
-const findBlock = (blocks, name) => (
-  blocks.reduce((result, block) => {
-    if (result) {
-      return result;
-    }
-    if (block.name === name) {
-      return block;
-    }
-    if (Array.isArray(block.innerBlocks) && block.innerBlocks.length) {
-      return findBlock(block.innerBlocks, name);
-    }
-    return null;
-  }, null)
-);
-
 export default {
   SAVE_FORM() {
     if (select('mailpoet-form-editor').getIsFormSaving()) {

assets/js/src/form_editor/store/find_block.jsx

@@ -0,0 +1,16 @@
+const findBlock = (blocks, name) => (
+  blocks.reduce((result, block) => {
+    if (result) {
+      return result;
+    }
+    if (block.name === name) {
+      return block;
+    }
+    if (Array.isArray(block.innerBlocks) && block.innerBlocks.length) {
+      return findBlock(block.innerBlocks, name);
+    }
+    return null;
+  }, null)
+);
+
+export default findBlock;

assets/js/src/form_editor/store/form_validator.jsx

@@ -1,3 +1,5 @@
+import findBlock from './find_block.jsx';
+
 export default (formData, formBlocks) => {
   if (!formData || !formData.settings || !Array.isArray(formData.settings.segments)) {
     throw new Error('formData.settings.segments are expected to be an array.');
@@ -9,8 +11,8 @@ export default (formData, formBlocks) => {
   if (!formData.settings.segments || formData.settings.segments.length === 0) {
     errors.push('missing-lists');
   }
-  const emailInput = formBlocks.find((block) => (block.name === 'mailpoet-form/email-input'));
-  const submit = formBlocks.find((block) => (block.name === 'mailpoet-form/submit-button'));
+  const emailInput = findBlock(formBlocks, 'mailpoet-form/email-input');
+  const submit = findBlock(formBlocks, 'mailpoet-form/submit-button');
   if (!emailInput) {
     errors.push('missing-email-input');
   }