GraphQL Directives

[marwan38]

Description

Directives are a fundamental part of GraphQL and as such I believe should be part of the base providing of any GraphQL implementation. It should be fairly straight forward to add as it's not much different from adding a new type, or interface, etc. Happy to do it with a bit of guidance.

Additional context or points of discussion

I would not ask or bother with this feature were I able to access the GraphQL schema directly during schema build, but I haven't been able to achieve that as the schema instance is generated right before generating the schema (as far as I understood the source code). If we can expose the schema, I'd prefer doing that as it's much less work Adding a directive is as easy as:

<?php
use GraphQL\Type\Definition\Directive;

$directive = new Directive($config);
$graphqlSchema->directives[] = $directive;

That is all.

Validations

• You intend to implement the feature yourself
• You have read the contributing guide
• You strongly believe this feature should be in core, rather than being its own community module
• You have checked for existing issues or pull requests related to this feature (and didn't find any)

PRs

• API Add Directive types #580

[maxime-rainville]

Honestly, it's unlikely we'll be able to prioritise this feature. Would you be keen to implement it yourself?

[marwan38]

Honestly, it's unlikely we'll be able to prioritise this feature. Would you be keen to implement it yourself?

That's my intention. I just hope I can make the time to do it.

It's taking me quite a long time, migrating our codebase across to graphql 4+. It's been over two months so at this point I'm trying to workaround the little things that have a decent workaround.

I do think directives are quite valuable (just the basic @deprecatedReason is useful). Client side directives are also used (Apollo graphql) to handle certain use cases. They are also a part of the graphql specification.

No promises, but.. we'll see after I finish my current task.