Add ability to use complex data types and casts

[eta-orionis]

Currently Sushi inserts rows straight into the database, which does not allow any "complex" data to be saved in rows, not even an array. Think of the use case

[ 
  "county" => "SomeCounty", 
  "postCodes"=>[111,222,333]
]

This PR adds the ability to use the model's $casts, which allows Eloquent to cast arrays and other data as necessary into/from a string for saving to Sushi's internal SQLite database.

[eta-orionis]

The checks seem to fail due to a database connection problem. The code works on my application.

[calebporzio]

This is pretty cool

1. Can you add tests?
2. Would using create() cause issues if they don't have fillable or guarded added? And is that a problem if we make all fields fillable. Maybe eloquent has a method to call create, but bypass fillable.

[calebporzio]

Thanks, I added tests and used forceCreate

[craigpotter]

@calebporzio This is a cool feature but I think there needs to be a way to have casts and use the bulk insert.

We have a sushi model that has ~ 500 rows. We use casts so data is nice when we retrieve it from the model and the initial data is set up correctly for when it is inserted anyway.

Before this PR, it would be inserted as 5 queries based on the default chunk size of 100.
Now it is looping through and running 500+ inserts

[eta-orionis]

@craigpotter What do you mean with:

We use casts so data is nice when we retrieve it from the model
and the initial data is set up correctly for when it is inserted anyway.

Do you mean that you had a way to use casts before this PR? Because I could not see one, certainly not one that uses the simple casts included in Laravel.

As the author of the PR, I tried to preserve the bulk-insert functionality, but could not see a way to do it.

The original bulk insert method used the underlying DB directly; this does not call any casts or events whatsoever. The only way I could see to use casts was to manipulate data through Eloquent, but then each row must be inserted separately.

Am I missing something here?

@calebporzio This is a cool feature but I think there needs to be a way to have casts and use the bulk insert.

We have a sushi model that has ~ 500 rows. We use casts so data is nice when we retrieve it from the model and the initial data is set up correctly for when it is inserted anyway.

Before this PR, it would be inserted as 5 queries based on the default chunk size of 100. Now it is looping through and running 500+ inserts