Finding a user profile match in laravel 5.3 - php

Question

I have a user who speaks native language lets say English and wants to learn French.
How can I find a list of match where users native is French and wants to learn English.
Its a language exchange program so I would like to list users with the match.
I have Users, Language_User and Language table. in Language_User table I have an extra field called type(learn or native).
Users
id
name
...
Language_User
id
user_id
language_id
type('learn','native')
Language
id
language
Queries
First I am getting all the users that does not have a role as 'Admin' or is not him/herself.
$other_users = User::with('languages')->with('departments')->with('hobbies')->with('universities')->with('years')->where([['id', '<>', Auth::user()->id],['role', '<>', 2]])->get();
Then, I am getting loggedin users $learn language and $native language to compare with other users
$learn = Auth::user()->languages()->wherePivot('type', 'learn')->select('language_id')->first();
$native = Auth::user()->languages()->wherePivot('type', 'native')->select('language_id')->first();
In View
gives loggedin user language to learn
{{$learn->language_id}}
gives loggedin user native language
{{$native->language_id}}
View Code
#foreach($other_users as $user)
#foreach($user->languages as $lang)
#if($lang['pivot']['type'] ==='native' AND $lang['pivot']['language_id'] ===$learn['language_id'])
<tr>
<td>{{$user->firstname}} </td>
<td>{{$user->lastname}} </td>
<td>{{$user->email}} </td>
<td>{{$user->photo}} </td>
<td>{{$user->bio}} </td>
<td>{{$user['universities']->university}} </td>
<td>{{$user['departments']->department}} </td>
<td>{{$user['years']->year}} </td>
<td>
#foreach($user->languages as $lang)
#if($lang['pivot']['type'] === 'native')
{{$lang["language"]}}
#endif
#endforeach
</td>
<td>
#foreach($user->languages as $lang)
#if($lang['pivot']['type'] === 'learn')
{{$lang["language"]}}
#endif
#endforeach
</td>
<td>
#foreach($user->hobbies as $hobby)
{{$hobby->hobby}} <br>
#endforeach
</td>
</tr>
#endif
#endforeach
#endforeach
I am unable to put two if conditions one for checking native language and one for checking learn language. if I do like this:
#if($lang['pivot']['type'] ==='native' AND $lang['pivot']['language_id'] ===$learn['language_id'])
#if($lang['pivot']['type'] ==='learn' AND $lang['pivot']['language_id'] ===$native['language_id'])
I get no rows, whereas user do exist with a match.
I think because I have two pivot type learn and native in an array. how to compare both learn and native? below shown languages format. its many to many relation
"languages":[
{
"id":3,
"language":"Spanish",
"pivot":{
"user_id":2,
"language_id":3,
"type":"native"
}
},
{
"id":4,
"language":"Greek",
"pivot":{
"user_id":2,
"language_id":4,
"type":"learn"
}
}
]

Answer 1

Instead of loop through all the users in the database you could just constrain your query:
$native = Auth::user()->languages()->wherePivot('type', 'native')->first();
$learn = Auth::user()->languages()->wherePivot('type', 'learn')->first();
$other_users = User::with('departments', 'hobbies', 'universities', 'years', 'languages')
->where('id', '<>', Auth::user()->id)
->where('role', '<>', 2)
->whereHas('languages', function ($query) use ($learn) {
$query->where('type', 'native')->where('id', $learn->id);
})
->whereHas('languages', function ($query) use ($native) {
$query->where('type', 'learn')->where('id', $native->id);
})
->get();
Also, just an FYI, $lang['pivot']['type'] can also be written as:
$lang->pivot->type;
Your blade section could then look something like:
#foreach($other_users as $user)
<tr>
<td>{{ $user->firstname }} </td>
<td>{{ $user->lastname }} </td>
<td>{{ $user->email }} </td>
<td>{{ $user->photo }} </td>
<td>{{ $user->bio }} </td>
<td>{{ $user->universities->university }} </td>
<td>{{ $user->departments->department }} </td>
<td>{{ $user->years->year }} </td>
<td>
{{ $user->languages->where('pivot.type', 'learn')->first()->language }}
</td>
<td>
{{ $user->languages->where('pivot.type', 'native')->first()->language }}
</td>
<td>
{!! $user->hobbies->pluck('hobby')->implode('<br>') !!}
</td>
</tr>
#endforeach
Hope this helps!