Fix async validation in signup form (fixes #742) (#746)

client/modules/User/pages/SignupView.jsx

@@ -59,10 +59,26 @@ class SignupView extends React.Component {
   }
 }
 
+function asyncErrorsSelector(formName, state) {
+  const form = state.form[formName];
+  if (!form) {
+    return {};
+  }
+
+  const fieldNames = Object.keys(form).filter(key => !key.startsWith('_'));
+  return fieldNames.reduce((asyncErrors, fieldName) => {
+    if (form[fieldName].asyncError) {
+      return { ...asyncErrors, [fieldName]: form[fieldName].asyncError };
+    }
+    return asyncErrors;
+  }, {});
+}
+
 function mapStateToProps(state) {
   return {
     user: state.user,
-    previousPath: state.ide.previousPath
+    previousPath: state.ide.previousPath,
+    asyncErrors: asyncErrorsSelector('signup', state)
   };
 }
 
@@ -71,6 +87,9 @@ function mapDispatchToProps(dispatch) {
 }
 
 function asyncValidate(formProps, dispatch, props) {
+  const errors = {};
+  return Promise.resolve(true)
+    .then(() => {
       const fieldToValidate = props.form._active;
       if (fieldToValidate) {
         const queryParams = {};
@@ -79,13 +98,18 @@ function asyncValidate(formProps, dispatch, props) {
         return axios.get('/api/signup/duplicate_check', { params: queryParams })
           .then((response) => {
             if (response.data.exists) {
-          const error = {};
+              errors[fieldToValidate] = response.data.message;
-          error[fieldToValidate] = response.data.message;
-          throw error;
             }
           });
       }
-  return Promise.resolve(true).then(() => {});
+      return null;
+    })
+    .then(() => {
+      const err = { ...errors, ...props.asyncErrors };
+      if (Object.keys(err).length > 0) {
+        throw err;
+      }
+    });
 }
 
 function onSubmitFail(errors) {

client/styles/components/_forms.scss

@@ -45,3 +45,7 @@
 .form input[type="submit"] {
   @extend %forms-button;
 }
+
+.form input[type="submit"]:disabled {
+  cursor: not-allowed;
+}

server/controllers/user.controller.js

@@ -38,7 +38,12 @@ export function createUser(req, res, next) {
     });
 
     User.findOne(
+      {
+        $or: [
           { email: req.body.email },
+          { username: req.body.username }
+        ]
+      },
       (err, existingUser) => {
         if (err) {
           res.status(404).send({ error: err });
@@ -46,7 +51,8 @@ export function createUser(req, res, next) {
         }
 
         if (existingUser) {
-          res.status(422).send({ error: 'Email is in use' });
+          const fieldInUse = existingUser.email === req.body.email ? 'Email' : 'Username';
+          res.status(422).send({ error: `${fieldInUse} is in use` });
           return;
         }
         user.save((saveErr) => {