Document.prototype.validateSync()

Parameters

• pathsToValidate «Array|string» only validate the given paths

• [options] «Object» options for validation

• [options.validateModifiedOnly=false] «Boolean» If true, Mongoose will only validate modified paths, as opposed to modified paths and required paths.

Returns:

• «ValidationError,undefined» ValidationError if there are errors during validation, or undefined if there is no error.

Executes registered validation rules (skipping asynchronous validators) for this document.

Note:

This method is useful if you need synchronous validation.

Example:

const err = doc.validateSync();
if (err) {
  handleError(err);
} else {
  // validation passed
}