fix: Add validations dynamically for pre-chat form (#1779)

app/controllers/api/v1/widget/conversations_controller.rb

@@ -7,7 +7,7 @@ class Api::V1::Widget::ConversationsController < Api::V1::Widget::BaseController
 
   def create
     ActiveRecord::Base.transaction do
-      update_contact(contact_email) if @contact.email.blank?
+      update_contact(contact_email) if @contact.email.blank? && contact_email.present?
       @conversation = create_conversation
       conversation.messages.create(message_params)
     end

app/javascript/widget/components/PreChat/Form.vue

@@ -71,7 +71,8 @@ export default {
       default: () => ({}),
     },
   },
-  validations: {
+  validations() {
+    const identityValidations = {
       fullName: {
         required,
       },
@@ -79,10 +80,21 @@ export default {
         required,
         email,
       },
+    };
+
+    const messageValidation = {
       message: {
         required,
         minLength: minLength(10),
       },
+    };
+    if (this.options.requireEmail) {
+      return {
+        ...identityValidations,
+        ...messageValidation,
+      };
+    }
+    return messageValidation;
   },
   data() {
     return {