Invalid argument supplied for foreach() in Laravel - laravel

Question

I have double foreach here. Here is my view
<table border="1">
<tr>
<th>ID</th>
<th>ISBN</th>
<th>Klasifikasi</th>
<th>Lokasi</th>
<th>Cp_Or</th>
<th>Tahun</th>
<th>ID_Master_Buku</th
<th>Jenis</th>
<th>Status</th>
<th>Tgl_Masuk</th>
<th>can_issue</th>
<th>ID</th>
<th>Edisi</th>
<th>Pengarang</th>
<th>Deskripsi</th>
<th>Penerbit</th>
<th>Judul</th>
<th>Jumlah_Buku</th>
<th>Bahasa</th>
<th>Gambar</th>
<th>Subjek</th>
<th>Topik</th>
</tr>
#foreach($bukus as $buku)
#foreach($buku->tmbuku as $item)
<tr>
<td>{{$buku->ID}}</td>
<td>{{$buku->ISBN}}</td>
<td>{{$buku->Klasifikasi}}</td>
<td>{{$buku->Lokasi}}</td>
<td>{{$buku->Cp_Or}}</td>
<td>{{$buku->Tahun}}</td>
<td>{{$buku->ID_Master_Buku}}</td>
<td>{{$buku->Jenis}}</td>
<td>{{$buku->Status}}</td>
<td>{{$buku->Tgl_Masuk}}</td>
<td>{{$buku->can_issue}}</td>
<td>{{$item->ID}}</td>
<td>{{$item->Edisi}}</td>
<td>{{$item->Pengarang}}</td>
<td>{{$item->Deskripsi}}</td>
<td>{{$item->Penerbit}}</td>
<td>{{$item->Judul}}</td>
<td>{{$item->Jumlah_Buku}}</td>
<td>{{$item->Bahasa}}</td>
<td>{{$item->Gambar}}</td>
<td>{{$item->Subjek}}</td>
<td>{{$item->Topik}}</td>
#endforeach
</tr>
#endforeach </table>
It works in my other views. But here, I got an error
Invalid argument supplied for foreach()
Could you please help me? Thanks in advance

Answer 1

Sounds a lot like at least one $buku->tmbuku is null...
Try wrapping it in an #if:
#foreach($bukus as $buku)
#if($tmbuku = $buku->tmbuku
#foreach($tmbuku as $item)
<tr>
<td>{{$buku->ID}}</td>
<td>{{$buku->ISBN}}</td>
<td>{{$buku->Klasifikasi}}</td>
<td>{{$buku->Lokasi}}</td>
<td>{{$buku->Cp_Or}}</td>
<td>{{$buku->Tahun}}</td>
<td>{{$buku->ID_Master_Buku}}</td>
<td>{{$buku->Jenis}}</td>
<td>{{$buku->Status}}</td>
<td>{{$buku->Tgl_Masuk}}</td>
<td>{{$buku->can_issue}}</td>
<td>{{$item->ID}}</td>
<td>{{$item->Edisi}}</td>
<td>{{$item->Pengarang}}</td>
<td>{{$item->Deskripsi}}</td>
<td>{{$item->Penerbit}}</td>
<td>{{$item->Judul}}</td>
<td>{{$item->Jumlah_Buku}}</td>
<td>{{$item->Bahasa}}</td>
<td>{{$item->Gambar}}</td>
<td>{{$item->Subjek}}</td>
<td>{{$item->Topik}}</td>
</tr>
#endforeach
#endif
#endforeach

Answer 2

Try checking if its null and items count before executing the second loop e.g.:
#foreach($bukus as $buku)
#if(!is_null( $buku->tmbuku ) && count( $buku->tmbuku ) )
#foreach($buku->tmbuku as $item)
<tr>
<td>{{$buku->ID}}</td>
<td>{{$buku->ISBN}}</td>
<td>{{$buku->Klasifikasi}}</td>....
<td>{{$item->ID}}</td>
<td>{{$item->Edisi}}</td>
<td>{{$item->Pengarang}}</td>
<td>{{$item->Deskripsi}}</td>...
</tr>
#endforeach
#endif
#endforeach