Filament•6mo ago

SelectFilter by 2 level relationship

I want to make a SelectFilter by country in a table where I show vehicles. The data model is as follows: Vehicle - id - name - place_id Place - id - name - country_id Country - id - code - name That is, a Vehicle belongs to a Place and a Place has a Country. My current code is as follows, the filter shows it but the changes are not applied:

SelectFilter::make('place.country.code')
    ->label(__('Country'))
    ->options(fn () => Country::pluck('name', 'code')->toArray())
    ->multiple()
    ->searchable()
    ->preload(),

SelectFilter::make('place.country.code')
    ->label(__('Country'))
    ->options(fn () => Country::pluck('name', 'code')->toArray())
    ->multiple()
    ->searchable()
    ->preload(),

Thanks

Solution:

https://v2.filamentphp.com/tricks/use-selectfilter-on-distant-relationships Can you check this article...

Filament

Use SelectFilter on distant relationships by Hugh Messenger - Trick...

Filament is a collection of tools for rapidly building beautiful TALL stack apps, designed for humans.

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15 Replies

abdullafahem•6mo ago

I think your problem is with SelectFilter::make('place.country.code') the name of SelectFilter I don't think should be named like this can you try only for example country and show some results?

Roberto S.OP•6mo ago

I get a SQL error:

SELECT
  count(*) AS aggregate
FROM
  "vehicles"
WHERE
  "status" = PUB
  AND ("country" IN (CN))

SELECT
  count(*) AS aggregate
FROM
  "vehicles"
WHERE
  "status" = PUB
  AND ("country" IN (CN))

abdullafahem•6mo ago

Did you have declare functions in your models for relationships?

Roberto S.OP•6mo ago

Yes, I do: Vehicle.php

    public function place(): BelongsTo
    {
        return $this->belongsTo(Place::class);
    }

    public function place(): BelongsTo
    {
        return $this->belongsTo(Place::class);
    }

Place.php

    public function country(): BelongsTo
    {
        return $this->belongsTo(Country::class);
    }

    public function vehicles(): HasMany
    {
        return $this->hasMany(Vehicle::class);
    }

    public function country(): BelongsTo
    {
        return $this->belongsTo(Country::class);
    }

    public function vehicles(): HasMany
    {
        return $this->hasMany(Vehicle::class);
    }

Country.php

    public function place(): HasMany
    {
        return $this->hasMany(Place::class);
    }

    public function place(): HasMany
    {
        return $this->hasMany(Place::class);
    }

abdullafahem•6mo ago

Can you remove the .code just let it place.country Because I think the code should came from the options And this SelectFilter you are implement it in VehicleResource?

Roberto S.OP•6mo ago

The result is the same, the filter is shown but doesn't do nothing 😦

abdullafahem•6mo ago

The countries how did you save in the DB And please try to remove the multiple for just once

Roberto S.OP•6mo ago

The result without

multiple()

multiple()

is the same

abdullafahem•6mo ago

SelectFilter::make('code')
    ->label(__('Country'))
    ->relationship(place.country.code', 'name')

Can you try like this?

SelectFilter::make('place.country.code')
    ->label(__('Country'))
    ->options(fn () => Country::pluck('code', 'id')->toArray())

Or like this

Roberto S.OP•6mo ago

This one throws an error: Filament\Support\Services\RelationshipJoiner::prepareQueryForNoConstraints(): Argument #1 ($relationship) must be of type Illuminate\Database\Eloquent\Relations\Relation, null given, called in /Users/rsv/Herd/my_project/vendor/filament/forms/src/Components/Select.php on line 763

Roberto S.OP•6mo ago

This one doesn't work too 😦

Solution

abdullafahem•6mo ago

https://v2.filamentphp.com/tricks/use-selectfilter-on-distant-relationships Can you check this article

Filament

Use SelectFilter on distant relationships by Hugh Messenger - Trick...

Filament is a collection of tools for rapidly building beautiful TALL stack apps, designed for humans.

abdullafahem•6mo ago

I think is usefull

Roberto S.OP•6mo ago

Thank you very much for your help! It's working now! This is the code:

SelectFilter::make('country')
    ->label(__('Country'))
    ->options(fn () => Country::pluck('name', 'code')->toArray())
    ->query(function (Builder $query, array $data) {
        if (! empty($data['value'])) {
            $query->whereHas(
                'place',
                fn (Builder $query) => $query->whereHas(
                    'country',
                    fn (Builder $query) => $query->where('code', '=', $data['value'])
                )

            );
        }
    }),

SelectFilter::make('country')
    ->label(__('Country'))
    ->options(fn () => Country::pluck('name', 'code')->toArray())
    ->query(function (Builder $query, array $data) {
        if (! empty($data['value'])) {
            $query->whereHas(
                'place',
                fn (Builder $query) => $query->whereHas(
                    'country',
                    fn (Builder $query) => $query->where('code', '=', $data['value'])
                )

            );
        }
    }),

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SelectFilter by 2 level relationship