Laravel Count and Group By Child Relationship - laravel

Question

I have two tables, one called companies and one called leads. Using Laravel's Eloquent I'd like to get a count of leads for each company. Which is pretty straight forward, but I also need to group these by the Leads status.
e.g.
Company A has
3 hot leads
2 cold leads
Company B has
6 cold leads
0 hot leads
Companies table has the following structure:
id
name
Leads table has the following structure
id
company_id
status (hot, cold)
I have tried the following, which gets the count of leads out for each company, but this needs to be further grouped by the status of the leads
DB::table('companies')
->selectRaw('companies.id, companies.name, COUNT(*) as count')
->join('leads', 'leads.company_id', '=', 'companies.id')
->groupBy('id')
->get();

Answer 1

When using aggregates such as count, you need to make sure to group by all selected non-aggregate columns.
MySQL will usually let you get away with out doing this but the query results can come out being non-sensical.
$companies = DB::table('companies')
->select(['companies.name', 'leads.status', \DB::raw('COUNT(*) as count')])
->join('leads', 'leads.company_id', '=', 'companies.id')
->groupBy('companies.name', 'leads.status')
->get();
If you have multiple records in the companies table with the same name (but different ids), this will group all the counts together for each duplicate company name. If that's the case, you should also select and group by companies.id as well.
If you want to key this by the company, and then by the status, the following should work...
$companies = $companies->groupBy('name')->map(function ($company) {
return $company->groupBy('status')->map(function ($company) {
return $company->first()['count'];
});
});
Then you can use it like...
echo $companies['testCompanyName']['hot'];
echo $companies['testCompanyName']['cold'];