How To Update hasMany relationship data with multiple row at a time in Laravel? - laravel

Question

I want to update SubCategory, which has a relationship with Category as a hasMany relationship. Now I want to update both category and subcategory at a time from one form. I want to update every subcategory which belongs to the category. But I can't do that.
Here is category model:
class Category extends Model
{
use HasFactory;
protected $guarded=[];
public function subcategory(){
return $this->hasMany('App\Models\SubCategory');
}
Here is subcategory model:
class SubCategory extends Model
{
use HasFactory;
protected $guarded=[];
public function category(){
return
$this>belongsTo('App\Models\Category','category_id','id');
}
here is update function in controller:
public function categoryUpdate(Request $request,$id){
if (is_null($this->user) || !$this->user->can('categories-update')) {
abort(403, 'Sorry !! You are Unauthorized !');
}
$request->validate([
'name' => 'required|max:191',
'status' => 'required',
]);
$Category=Category::findOrFail($id);
$Category->name = $request->name;
$Category->slug = Str::slug($request->name);
$Category->status = $request->status;
$Category->updated_by=Auth::user()->id;
$Category->update();
if($request->subcategory_name !=['']){
foreach($request->subcategory_name as $subcat){
if($subcat !=''){
SubCategory::create([
'name'=>json_encode($subcat),
'slug'=>Str::slug(json_encode($subcat)),
'category_id'=>$id,
'created_by' =>Auth::user()->id,
]);
}
}
}
Alert::success('Success','Category has been updated successfully!');
return redirect()->route('category.index');
}
I don't know the code to update multiple subcategories at a time.
Here is the Html form
<form action="{{ route('category.update', $data->id) }}" method="POST">
#csrf
<div class="form-group">
<label for="" class="mb-2">Category name</label>
<input name="name" class="form-control" value="{{ $data->name }}" type="text"
#error('name') is-invalid #enderror" placeholder="Name">
#error('name')
<div class="text-danger">* {{ $message }}</div>
#enderror
</div><br>
<div class="form-group">
<label for="" class="mb-2">SubCategory name</label>
#foreach ($subcat as $sub)
<div class="d-flex w-70 justify-content between mb-2">
<input name="subcategoryname[]" id="subcategoryname" class="form-control w-50" type="text" value="{{json_decode($sub->name)}}"></input>
<button onclick="deleteSubcategory({{$sub->id}})" id="delete_subcat" class="btn btn-danger btn-sm ms-2"><i
class="fa fa-trash text-dark" style="font-size:20px;color:white!important"
aria-hidden="true"></i></button>
</div>
#endforeach
</div><br>
<div class="form-group mt-2">
<label for="" class="mb-2">Add New SubCategory</label>
<div class="subcategory w-50">
<div class="d-flex mb-2">
<input name="subcategory_name[]" class="form-control" id="name" type="text"
placeholder="Name" multiple>
<span id="add" class="btn btn-dark ms-3">+</span>
</div>
</div>
<div class="form-group mt-2">
<label for="" class="mb-2">Status</label>
<br>
<select name="status" class="form-control" style="width:40%"
#error('status') is-invalid #enderror">
<option value="">--Select Status--</option>
<option value="Active" #if ($data->status == 'Active') selected #endif>Active
</option>
<option value="Inactive" #if ($data->status == 'Inactive') selected #endif>Inactive
</option>
</select>
#error('status')
<div class="text-danger">* {{ $message }}</div>
#enderror
</div>
<div class="form-group mt-4 d-flex justify-content-between">
<button type="button" class="btn btn-secondary btn-sm"
data-bs-dismiss="modal">Cancel</button>
<input class="btn btn-primary btn-sm"type="submit" value="Update">
</div>
</form>

Answer 1

The create method takes array of records you want to save. So you can build an array and pass that array to the create method on the SubCategory.
if($request->subcategory_name !=['']){
$subCategories = [];
foreach($request->subcategory_name as $subcat){
if($subcat !=''){
$subCategories[] = [
'name'=>json_encode($subcat),
'slug'=>Str::slug(json_encode($subcat)),
'category_id'=>$id,
'created_by' =>Auth::user()->id,
];
}
}
SubCategory::updateOrCreate(['name', 'slug'], $subCategories);
}