Insert into DB based on a Join -> Laravel - laravel

Question

I am working on a roll format for a laravel project.
I have successfully created the roll, and can update the roll status in the roll table which looks like this
|id|roll_id|member_id|status|created_at|updated_at|
One of my status is "Present/Voucher" using funds off a Voucher
I have the Voucher Table
|id|member_id|voucher|date|balance|created_at|updated_at|
When a user clicks on the present/voucher icon in the roll, the following is called in the controller
public function voucher($id)
{
$r = Roll::find($id);
if ($r != null)
{
$r->status = "V";
$r->save();
return redirect(action('RollController#index'))->with ('success', 'Member Paid with Vocuher');
}
return redirect(action('RollController#index'));
}
This works perfect, what I would like to know is how to insert a record into my Voucher table, while I can find the id record in the roll table, I need to pull that member_id so I can add this into the voucher table
For example if the Roll Record looks like this
|id|roll_id|member_id|Status|
|20|2|13|V|
I need to grab 13 are the Member_ID from roll record 20, so I can insert in the vouchers table
|id|member_id|voucher|date|balance
|2|13|Weekly Fees|currdate|-10
Please note the 10 is also stored in a settings table, so if I can grab from that table that would be great
Settings Table:
|id|Setting|Value|
|1|weekly Subs|10|
Thanks

Answer 1

You could first define model relationship.
Member
class Member extends Model {
public function vouchers()
{
return $this->hasMany('App\Voucher');
}
}
Roll
class Roll extends Model {
public function member()
{
return $this->belongsTo('App\Member');
}
}
Voucher
class Voucher extends Model {
public function member()
{
return $this->belongsTo('App\Member');
}
public function setting()
{
return $this->belongsTo('App\Setting');
}
}
Then you can execute fluently in controller, you should also use lockForUpdate and DB::transaction
public function voucher($id)
{
DB::transaction(function () use ($id) {
$roll = Roll::lockForUpdate()->find($id);
if ($roll != null) {
$roll->status = "V";
$roll->save();
$voucher = new Voucher();
$voucher->member_id = $roll->member_id;
...
// Correct me if I am wrong, form your table structure it looks like you linked table voucher and setting with 'value'
// I strongly recommend you to have setting_id as foreign key in table voucher
// So you could do
// $setting = Setting::where('Setting', 'weekly Subs')->where('Value', 10)->first();
// $voucher->setting_id = $setting->id;
$voucher->save();
return redirect(action('RollController#index'))->with ('success', 'Member Paid with Vocuher');
}
}
return redirect(action('RollController#index'));
}