Merge branch 'master' of github.com:trouble/payload into slate-js

src/fields/validateUpdate.js

@@ -9,7 +9,7 @@ const validateUpdate = async (data, fields) => {
 
     const field = fields.find(matchedField => matchedField.name === key);
 
-    if (field && dataToValidate) {
+    if (field && dataToValidate !== undefined) {
       validationPromises.push(field.validate(dataToValidate, field));
       validatedFields.push(field);
     }

src/fields/validations.js

@@ -27,7 +27,11 @@ const optionsToValidatorMap = {
       return `This value must be longer than the minimum length of ${options.max} characters.`;
     }
 
-    return Boolean(value);
+    if (typeof value !== 'string' || value.length === 0) {
+      return 'This field is required.';
+    }
+
+    return true;
   },
   password: (value, options = {}) => {
     if (options.maxLength && value.length > options.maxLength) {