pull common SQL adapters and helpers into reusable functions

[verdverm]

…functions

[mitjade]

@verdverm You are doing an amazing job here. I am doing something a bit differently in #524. That is generating sql queries with knex, based on resolverInfo. I think combining both things could resolve into something really powerful. I initially tried integrating join-monster into this kit, but it did not fit in well in all the places I needed it. knex query builder is really powerful and above all flexible enough to do what you want.

Quick intro to my approach:
In the resolver there is a forth argument info for example:

product: async (obj, args, context, info) => ...

With the help of graphql-parse-fields you can get all query fields and then I generate all the select fields and joins so that in the end you get with the help of knexnest exact data that you need.
If you are interested in what I've done, you can check selectBy in https://github.com/sysgears/apollo-universal-starter-kit/blob/cli-crud/src/server/sql/helpers.js.
To take care of one-to-many relations I needed to use graphql-resolve-batch, so I could pass in the info. But for this I need to generate a resolver to connect it all together.

Branch is currently work in progress and many things still do not yet fully work as intended.

I am officially on vacation an really promised my wife I will not do any work over the holidays. If any of this interest you we can discuss it further, but I will not really be responsive, maybe twice day at most. After the holidays I will continue on this and I can already see many things you done, that can be useful to me in what I am doing.

[verdverm]

I was definitely thinking about how the query path will probably be needed in the withAuth adapter, pairing with the info comes that comes from obj/sources

[verdverm]

Check these out:

https://github.com/sysgears/apollo-universal-starter-kit/blob/96dcc866b91004ffad3d13ff1d811c665e3a8546/src/server/sql/crud.js

96dcc86

[mitjade]

@verdverm Looks interesting! A bit hard to wrap my head around all the code. Will take a closer look, when I have some time.

[verdverm]

I added a HOC Table based on react-table that integrates with the paging crud helper in my madd sci PR

[verdverm]

I have a hard time wrapping my head around it too!

[larixer]

Looks like this function is specific to user module. Why is it here, then?

[larixer]

Is it okay to send user to the PR in the docs?

[verdverm]

I've upgraded this system a bunch on my mad-sci branch. Lots of other helpers for other things too. They are starting to become better together. Check the latest commit(s) over there

[mairh]

Wouldn't it make sense to pull all those upgrades into smaller PR? mad-sci branch is f*****g huge and kinda impossible to do a PR or make sense out of it.

[larixer]

@verdverm Are you going to take into account the points I have raised in this PR to finish it and merge? See my comments under lines of your code above

[verdverm]

I cut a new PR on this one too. #650