Returning validation errors and old values to `post` form.

Made custom middleware for that purpose.

1 files changed, 23 insertions, 0 deletions

diff --git a/utils/middleware/oldForm.js b/utils/middleware/oldForm.js
new file mode 100644
index 0000000..7bcfb34
--- /dev/null
+++ b/utils/middleware/oldForm.js
@@ -0,0 +1,23 @@
+module.exports = (req, res, next) => {
+
+  req.setOldForm = (errors) => {
+    let prettyErrors = {};
+    Object.keys(errors.errors).forEach(err => {
+      prettyErrors[err] = errors.errors[err].message;
+    });
+
+    req.session.oldForm = {
+      errors: prettyErrors,
+      values: req.body
+    };
+  };
+
+  if (!req.session.oldForm) req.session.oldForm = {
+    errors: null,
+    values: null
+  };
+
+  res.locals.oldForm = req.session.oldForm;
+  delete req.session.oldForm;
+  next();
+};