From:  Chris Mills <cmills@mozilla.com>
Date:  19 Apr 2017 01:44:16 Hong Kong Time
Newsgroup:  news.mozilla.org/mozilla.dev.mdc
Subject:  

Re: Express local library tutorial

NNTP-Posting-Host:  63.245.214.181

Hello again Allen,

I’ve just gone through the instructions again, and they work fine for me. I think the script is talking about definitions for the DB objects taken from the model, rather than the routes, so I don’t think that’s an issue.

One thought I had - did you save the script in the right place? The instructions were a bit unclear, so I’ve rewritten them slightly. To be exact, the script should be saved in the same directory as the package.json file.

Other thoughts:

1. Did you create all four models as directed?
2. Did you install async as directed?
3. Check your code against the example repo at https://github.com/mdn/express-locallibrary-tutorial

Best regards,

Chris Mills
 Senior tech writer || Mozilla
developer.mozilla.org || MDN
 cmills@mozilla.com || @chrisdavidmills

> On 12 Apr 2017, at 16:58, Allen Unrau  wrote:
> 
> Hello 
> 
> I am working through the Express local library tutorial found at https://developer.mozilla.org/en-US/docs/Learn/Server-side/Express_Nodejs/Tutorial_local_library_website. I ran into some problems at the end of part 3, where you run the script to populate the database. I downloaded the script, ran it and only got the authors inserted into my database, nothing else. I got these errors on the command line:
> 
> FINAL ERR: ValidationError: Path `genre` is required., Path `book` is required.
> 
> I can't figure out why the authors worked and the rest didn't. At this point in the tutorial we built routes for /, /users, and /users/cool, so according to how I understand things, nothing should have worked. I also didn't get an error for 'bookinstance' but they weren't inserted into the database either. Can anyone shed some light on what is going on?
> 
> I'm going through the 'populatedb.js' code and for each catalog item type (Author, Book, Genre and Bookinstance), I see .save and .push methods being called, presumably to save to the database. Where do these methods come from?
> 
> thx
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