[[TOC]]
How to Cleanly Refactor Loops
https://laracasts.com/series/how-do-i/episodes/18
1, foreach
- create an array
- perform operation
- return array
dueForReview = [];
foreach ($staff as $member) {
//add to dueForReview if pass test
}
2, array_filter
$dueForReview = array_filter($staff, function($member)) {
return $member->dueForReview();
})
3, use Laravel collection class
$dueForReview = collect($data)->flatten()->filter(function ($member) {
return $member->dueForReview();
});
or even:
collect($data)
->flatten()
->filter(function ($member)){
return $member->dueForReview();
})
->each(function ($member) {
$member->review();
)};
or higher order collections:
collect($data)
->flatten()
->filter->dueForReview()
->each->review();
Collect, flatten, then filter.
Drying Up Forms
<form> is in the create or edit
variables can be passed in the @include
@include ('posts.form', [
'submitButtonText' => 'Update Post'
])
//old title if it exists ?? otherwise one from the db
value=""
Jeff also passes a new $post into the create (his is done in the view).
Eloquent Techniques
1 Transactions 101
DB:transaction( function () {
//bill the customer
//create the customer
});
2 Track Document Adjustments
Timestamps can be added if required in pivot table.
Add them in the relationship.
->withTimestamps();
3 Record Model Changes
Before and after changes
$document->getDirty() values which have changed