[Book] Step 9 Issue: Cannot create new Comment

[roo7cause]

Hello Symfony Community,

I am reading the book about Symfony 5: The Fast Track and I spotted a potential Bug in the book, where the content suggest that at the specific moment something is possible to do, but it actually is not.

DETAILS:
This chapter: https://symfony.com/doc/current/the-fast-track/en/9-backend.html
just before 9.2 chapter suggests that it is possible to create a New Comment in Admin dashboards. However, I receive the following error:

This errors tells me that the conference_id is null. This is true, because at this very step, we do not have an option to choose to which Conference we want to add a new comment. Yet on the Book's screenshots it looks like it is possible. Now, I am just begining to learn about Backend development, so if this should be somehow 'auto-filled', please let me know what am I missing (I cannot imagine how it can be auto-filled, if I have multiple Conferences defined.. how would it automatically know into which Conference to put the comment to?).

We have 2 Entities: Conference and Comment, where the relationship is OneToMany (Conference -> Comment). This is all generated with ORM and 'make:entity' package. So there is not a lot of code to actually modify by this step, thus I believe there might be a bug either in the book itself (perhaps some missing step?) or with the composer packages that we used in Book.

PS: I am aware I am writting this in Symfony-docs, but in the Book's repository, there is no option to create an Issue. Please move this issue if this is not correct repository or suggest me an URL where to open it.

[cybd]

You should put

        $fields = parent::configureFields($pageName);
        $fields[] = AssociationField::new('conference');
        return $fields;

in configureFields method of CommentCrudController file.
AssociationField was forgotten at this step. It's a good chance to check and fix yourself.

[shoshinmas]

This helps a lot, thank you!

[GrossmanPro]

Ran into the same issue. On the Setting up an Admin Backend page of the online version of the book, the "Add some comments without photos..." section and screen shot should come after the Customizing EasyAdmin section.

[mariojackson]

I just ran into the same problem.

[haxworx]

Again, running into the same problem.

[haxworx]

As noticed by @GrossmanPro the ordering of the book is incorrect. After Customizing the EasyAdmin section I was successfully able to add comments via the Admin backend.

[bruteforks]

same problem. Also need to add use EasyCorp\Bundle\EasyAdminBundle\Field\AssociationField; with cybd's fix

[BigBenJr]

I got the same issue reading "The Fast Track" for Symfony 6.2, it's still not fixed.

[alamirault]

Updating Fast Track is mandatory

Friendly ping @fabpot, as I think we can do nothing in our side (and many people have the problem) ?

[javiereguiluz]

I can confirm this error. You can't create a new Comment at that point.

So, I'm proposing some changes in the Fast Track private repository to move this section a bit below, after the Comment entity is configured explicitly.

[alamirault]

I now see AssociationField::new('conference'); on https://symfony.com/doc/current/the-fast-track/en/9-backend.html#customizing-easyadmin

So I think your PR has been merged @javiereguiluz ?

[javiereguiluz]

No. Sadly it hasn't been merged yet. It's about changing the order of some contents.

[Yumekawa-chan]

I just ran into the same problem.