Update fields in a pivot table Laravel 5.5 - laravel

Question

I have 3 tables (2 + pivot) :
categories
id
admin_id
created_at
updated_at
deleted_at
langs
id
langname_fr
langname
....
lang_sector
lang_id
sector_id
sectname
sectshortname
....
I created a form which allow to create several entries depending the number of languages i defined ...
{!! Form::open( array('route' => 'maps.store','method' => 'POST') ) !!}
<fieldset>
<legend>Nom du secteur</legend>
#foreach($langs as $lang)
<div class="form-group m-form__group">
{{ Form::label( 'Nom du secteur en ' . $lang->langname_fr) }}
{{ Form::text('sectname_lang_' . $lang->id, '' , [ 'class' => 'form-control m-input' ]) }}
</div>
<div class="form-group m-form__group">
{{ Form::label( 'Nom abrégé du secteur en ' . $lang->langname_fr ) }}
{{ Form::text('sectshortname_lang_' . $lang->id, '', [ 'class' => 'form-control m-input' ]) }}
</div>
#endforeach
</fieldset>
...
{!! Form::close() !!}
If i want to create an entry in my database, i have to create several entries ...
public function sectorCreate(Request $request) {
Sector::create(array(
'admin_id' => Auth::guard('admin')->user()->id,
'created_at' => Carbon::now(),
'updated_at' => Carbon::now(),
));
$sector = Sector::all()->last();
$sector_id = Sector::all()->last()->id;
$countLang = Lang::count();
for ($i = 1; $i <= $countLang; $i++) {
$insertSector[$i] = $sector->langs()->attach(
$sector_id,
[
'lang_id' => $i,
'sectname' => $request->input('sectname_lang_' .$i),
'sectname_slug' => Str::slug($request->input('sectname_lang_' .$i)),
'sectshortname' => $request->input('sectshortname_lang_' .$i),
'sectdescription' => $request->input('sectdescription_lang_' .$i),
'sectshortdescription' => $request->input('sectshortdescription_lang_' .$i),
'created_at' => Carbon::now(),
'updated_at' => Carbon::now(),
'deleted_at' => NULL
]
);
}
return redirect()->route('admin.home')->with('success', 'Secteur créé');
}
Now my issue is to know how i can update the values of the database and to delete the entry ... I tried to read the documentation but i'm not sure i understood it.
For example
lang_id sector_id sectname sectshortname
-------------------------------------------------------
1 1 longname1 shortname1
2 1 longname2 shortname2
After update i would like to update sectname and sectshortname ... I have made several trials using sync, syncWithoutDetaching and updateExistingPivot without success...
I also add constraints by considering lang_id and sector_id as a primary key ...
UPDATE ----------------------------------------------------------
I modified the update method using sync and syncWithoutDetaching
public function update(Request $request, $id)
{
$sector = Sector::findOrFail($id);
$countLang = Lang::count();
$langs = Lang::all();
foreach ($langs as $lang) {
$lang_id = $lang->id;
}
for ($i = 1; $i <= $countLang; $i++) {
$insertSector[$i] = $sector->langs()->sync(
$sector->id,
$lang_id,
[
'sectname' => $request->input('sectname_lang_' .$i),
'sectname_slug' => Str::slug($request->input('sectname_lang_' .$i)),
'sectshortname' => $request->input('sectshortname_lang_' .$i),
'sectdescription' => $request->input('sectdescription_lang_' .$i),
'sectshortdescription' => $request->input('sectshortdescription_lang_' .$i),
'updated_at' => Carbon::now(),
'deleted_at' => NULL
]
);
}
return $insertSector;
//return redirect()->route('maps.index')->with('success', 'updated');
}

Answer 1

The Documentation states the following:
When attaching a relationship to a model, you may also pass an array of additional data to be inserted into the intermediate table:
$user->roles()->attach($roleId, ['expires' => $expires]);
You got this part correct. Now for updating (and or deleting):
Deleting
$user->roles()->detach([1, 2, 3]);
This removes associated records and clears the intermediate table.
Syncing Associations
You may also use the sync method to construct many-to-many associations. The sync method accepts an array of IDs to place on the intermediate table. Any IDs that are not in the given array will be removed from the intermediate table. So, after this operation is complete, only the IDs in the given array will exist in the intermediate table:
$user->roles()->sync([1, 2, 3]);
You may also pass additional intermediate table values with the IDs:
$user->roles()->sync([1 => ['expires' => true], 2, 3]);
If you do not want to detach existing IDs, you may use the syncWithoutDetaching method:
$user->roles()->syncWithoutDetaching([1, 2, 3]);
Conclusion
Use sync, and set the attributes again. If you just want to update a few records, use the syncWithoutDetaching.
Update
Change your update code to this:
$insertSector[$i] = $sector->langs()->sync(
$lang_id =>
[
'sectname' => $request->input('sectname_lang_' .$i),
'sectname_slug' => Str::slug($request->input('sectname_lang_' .$i)),
'sectshortname' => $request->input('sectshortname_lang_' .$i),
'sectdescription' => $request->input('sectdescription_lang_' .$i),
'sectshortdescription' => $request->input('sectshortdescription_lang_' .$i),
'updated_at' => Carbon::now(),
'deleted_at' => NULL
]
);
You passed both the sector->id and the $lang_id where you only needed to pass the $lang_id with attributes for the intermediate table.

Answer 2

Finally thanks to Douwe de Haan i finally solved my issue for creating an entry with pivot table ... i guess i understood a little bit how it work now
Here is the method :
public function store(Request $request)
{
Sector::create(array(
'admin_id' => Auth::guard('admin')->user()->id,
'created_at' => Carbon::now(),
'updated_at' => Carbon::now(),
));
$sector = Sector::all()->last();
$countLang = Lang::count();
$langs = Lang::all();
foreach ($langs as $lang) {
$lang_id[] = $lang->id;
}
for ($i=0 ; $i < $countLang; $i++) {
$insertSector[$i] = $sector->langs()->syncWithoutDetaching(
[$lang_id[$i] =>
[
'sectname' => $request->input('sectname_lang_' .$lang_id[$i]),
'sectname_slug' => Str::slug($request->input('sectname_lang_' .$lang_id[$i])),
'sectshortname' => $request->input('sectshortname_lang_' .$lang_id[$i]),
'sectdescription' => $request->input('sectdescription_lang_' .$lang_id[$i]),
'sectshortdescription' => $request->input('sectshortdescription_lang_' .$lang_id[$i]),
'created_at' => Carbon::now(),
'updated_at' => Carbon::now(),
'deleted_at' => NULL
]
]
);
}
return redirect()->route('maps.index')->with('success', 'Secteur créé');
}
For updating :
public function update(Request $request, $id)
{
$sector = Sector::findOrFail($id);
$countLang = Lang::count();
$langs = Lang::all();
foreach ($langs as $lang) {
$lang_id[] = $lang->id;
}
for ($i=0 ; $i < $countLang; $i++) {
$insertSector[$i] = $sector->langs()->updateExistingPivot(
$lang_id[$i],
[
'sector_id' => $request->input('sector_id'),
'sectname' => $request->input('sectname_lang_' .$lang_id[$i]),
'sectname_slug' => Str::slug($request->input('sectname_lang_' .$lang_id[$i])),
'sectshortname' => $request->input('sectshortname_lang_' .$lang_id[$i]),
'sectdescription' => $request->input('sectdescription_lang_' .$lang_id[$i]),
'sectshortdescription' => $request->input('sectshortdescription_lang_' .$lang_id[$i]),
'updated_at' => Carbon::now(),
'deleted_at' => NULL
]
);
}
return $insertSector;
//return redirect()->route('sectors.index')->with('success', 'Secteur mis à jour');
}