README

This Laravel Nova package adds a multiselect to Nova's arsenal of fields.'

Requirements

Laravel Nova ^2.0.11

For Nova version earlier than 2.0.11 please use nova-multiselect-field version 1.1.6 or earlier.

This restriction is due to Nova::translatable() method being added in 2.0.11, which allows this package to be localized.

Features

Multiselect with search
Single select with search
Reordering functionality with drag & drop
Dependency on other Multiselect instances

Screenshots

Installation

Install the package in a Laravel Nova project via Composer:

composer require optimistdigital/nova-multiselect-field

Usage

The field is used similarly to Nova's native Select field. The field type in the database should be text-based (ie string, text or varchar), selected values are stored as a stringified JSON array.

use OptimistDigital\MultiselectField\Multiselect;

public function fields(Request $request)
{
    return [
      Multiselect
        ::make('Favourite football teams', 'football_teams')
        ->options([
          'liverpool' => 'Liverpool FC',
          'tottenham' => 'Tottenham Hotspur',
          'bvb' => 'Borussia Dortmund',
          'bayern' => 'FC Bayern Munich',
          'barcelona' => 'FC Barcelona',
          'juventus' => 'Juventus FC',
          'psg' => 'Paris Saint-Germain FC',
        ])

        // Optional:
        ->placeholder('Choose football teams') // Placeholder text
        ->max(4) // Maximum number of items the user can choose
        ->saveAsJSON() // Saves value as JSON if the database column is of JSON type
        ->optionsLimit(5) // How many items to display at once
        ->reorderable() // Allows reordering functionality
        ->singleSelect() // If you want a searchable single select field
    ];
}

Option groups

Option groups are supported. Their syntax is the same as Laravel's option group syntax.

In this example (from Nova docs), all values are grouped by the group key:

->options([
    'MS' => ['label' => 'Small', 'group' => 'Men Sizes'],
    'MM' => ['label' => 'Medium', 'group' => 'Men Sizes'],
    'WS' => ['label' => 'Small', 'group' => 'Women Sizes'],
    'WM' => ['label' => 'Medium', 'group' => 'Women Sizes'],
])

Dependencies

You can make a Multiselect depend on another by using dependsOn. This also requires specifying ->dependsOnOptions(). The value from the dependsOn Multiselect has to be the key to the options and the value must be a key-value dictionary of options as usual.

Usage:

Multiselect::make('Country', 'country')
    ->options([
        'IT' => 'Italy',
        'SG' => 'Singapore',
    ]),

Multiselect::make('Language', 'language')
    ->dependsOn('country')
    ->dependsOnOptions([
        'IT' => [
            'it' => 'Italian',
        ],
        'SG' => [
            'en' => 'English',
            'ms' => 'Malay',
            'zh' => 'Chinese',
        ]
    ]),

    // Optionally define max number of values
    ->dependsOnMax([
        'IT' => 1,
        'SG' => 3,
    ])

Options

Possible options you can pass to the field using the option name as a function, ie ->placeholder('Choose peanuts').

Option	type	default	description
`options`	Array\|callable	[]	Options in an array as key-value pairs (`['id' => 'value']`).
`placeholder`	String	Field name	The placeholder string for the input.
`max`	Number	Infinite	The maximum number of options a user can select.
`groupSelect`	Boolean	false	For use with option groups - allows the user to select whole groups at once
`singleSelect`	Boolean	false	Makes the field act as a single select which also means the saved value will not be an array.
`saveAsJSON`	Boolean	false	When you have a SQL JSON column, you can force the field to save the values as JSON. By default, values are saved as a stringified array.
`optionsLimit`	Number	1000	The maximum number of options displayed at once. Other options are still accessible through searching.
`nullable`	Boolean	false	If the field is nullable an empty select will result in `null` else an empty array (`[]`) is stored.
`reorderable`	Boolean	false	Enables (or disables) the reordering functionality of the multiselect field.
`dependsOn`	String	null	Determines which Multiselect this field depends on.
`dependsOnOptions`	Array	null	Determines the options for `dependsOn`. See example above on how to format it correctly.
`resolveForPageResponseUsing`	Callable	null	Only for use in conjunction with Page Manager. Allows you to format the value before it is returned through the API.

Localization

The translations file can be published by using the following publish command:

php artisan vendor:publish --provider="OptimistDigital\MultiselectField\FieldServiceProvider" --tag="translations"

You can then edit the strings to your liking.

Overwriting the detail field

You can overwrite the detail view value component to customize it as you see fit.

Create a new component for NovaMultiselectDetailFieldValue and register it in your app.js. The component receives two props: field and values. The values prop is an array of selected labels.

// in NovaMultiselectDetailFieldValue.vue

<template>
  <div class="relative rounded-lg bg-white shadow border border-60" v-if="values">
    <div class="overflow-hidden rounded-b-lg rounded-t-lg">
      <div class="border-b border-50 cursor-text font-mono text-sm py-2 px-4" v-for="(value, i) of values" :key="i">
        {{ value }}
      </div>
    </div>
  </div>

  <div v-else>—</div>
</template>

<script>
export default {
  props: ['field', 'values'],
};
</script>

// in app.js

import NovaMultiselectDetailFieldValue from './NovaMultiselectDetailFieldValue';

Nova.booting((Vue, router, store) => {
  Vue.component('nova-multiselect-detail-field-value', NovaMultiselectDetailFieldValue);
});

Credits

shentao/vue-multiselect

License

This project is open-sourced software licensed under the MIT license.

codicastudio / multi-select

Maintainers

Details