Laravel "if else" check if exist in other table - php

Question

I want to use this if else statement like this:
#foreach ($comments as $comment)
<tr>
<td>
#if (is_null($ourcar))
<form method="POST" action="/comments/{{ $comment->id }}/ourcars">
{{ csrf_field() }}
<button type="submit" class="btn btn-xs btn-primary">Our cars</button>
</form>
#else
<p>saved</p>
#endif
</td>
</tr>
#endforeach
This is my controller:
public function browse(Request $request, CommentFilters $filters)
{
$lot_id = Comment::where('lot_id')->get();
$ourcar = OurCar::where('lot_id', '=', $lot_id)->first();
$comments = Comment::filter($filters)->orderBy('lot_date', 'desc')->paginate(30)->appends($request->all());
return view('comments.browse', compact(
'comments',
'ourcar'
));
}
My database structure is:
comments table: id, lot_id,
ourcars table: id, lot_id
My models:
Comment:
public function OurCar()
{
return $this->hasMany(OurCar::class);
}
OurCars:
public function Comment()
{
return $this->belongsTo(Comment::class);
}
OurCars migration:
Schema::create('ourcars', function (Blueprint $table) {
$table->engine = 'MyISAM';
$table->increments('id');
$table->integer('lot_id')->unsigned();
and it same for comments
What im trying to do is check if the lot_id already exist in "ourcars" table. If exist than return that message that this car is already saved. If not, than echo form.
With my code i have this error:
SQLSTATE[HY000]: General error: 2031 (SQL: select * from ourcars
where lot_id = ? limit 1)
Can some one recommend me a better solution?

Answer 1

The reason you are getting this message is because the get method will return an array , in this case it will bring all the lines of table commentplus it need 1 more argument at least to function.
$lot_id = Comment::where('lot_id')->get(); //
Also change your models to this
public function OurCar()
{
return $this->hasMany('App\Comment');
}
And this
public function Comment()
{
return $this->belongsTo('App\OurCar');
}
Here an example on how can you do it based on your code.
Pass the lot_id on the request
public function browse(Request $request, CommentFilters $filters)
{
$ourcar = OurCar::where('lot_id',$request->lot_id)->first();
$comments = Comment::filter($filters)->orderBy('lot_date', 'desc')->paginate(30)->appends($request->all());
return view('comments.browse')->with('ourcar',$ourcar)->with('comments',$comments);
}
Here the view
#foreach ($comments as $comment)
<tr>
<td>
#if ($ourcar->lot_id != $comment->lot_id)
<form method="POST" action="/comments/{{ $comment->id }}/ourcars">
{{ csrf_field() }}
<button type="submit" class="btn btn-xs btn-primary">Our cars</button>
</form>
#else
<p>saved</p>
#endif
</td>
</tr>
#endforeach