How to generate an array for a dropdown (with ['key' => 'value']) suitable for a dropdown, from a Laravel collection of Eloquent objects?

Laravel: How to generate an array for a dropdown (with ['key' => 'value']) suitable for a dropdown, from a Laravel collection of Eloquent objects?

The answer used to be list(), but now the answer is pluck()

  1. $posts = Post::all();
  2.  
  3.         echo Form::select("post_id", $posts->pluck("title","id"));
  4.  
  5.         // $posts->pluck("title","id") will produce something like this:
  6.         // [
  7.         //   1 => "post title 1",
  8.         //   5 => "Another post",
  9.         // ...
  10.         // ]

The first param is the actual value you want to 'pluck', and the second value is how you want it keyed. For most cases the second param will be 'id'.

You can also use pluck with just 1 param like this:

  1. $collection = collect([
  2.     ['product_id' => 'prod-100', 'name' => 'Desk'],
  3.     ['product_id' => 'prod-200', 'name' => 'Chair'],
  4. ]);
  5.  
  6. $plucked = $collection->pluck('name');
  7.  
  8. $plucked->all();
  9.  
  10. // ['Desk', 'Chair']

But if more than one item with the same key exists, the last matching one will be used. For example:

  1. $collection = collect([
  2.     ['brand' => 'Tesla',  'color' => 'red'],
  3.     ['brand' => 'Pagani', 'color' => 'white'],
  4.     ['brand' => 'Tesla',  'color' => 'black'],
  5.     ['brand' => 'Pagani', 'color' => 'orange'],
  6. ]);
  7.  
  8. $plucked = $collection->pluck('color', 'brand');
  9.  
  10. $plucked->all();
  11.  
  12. // ['Tesla' => 'black', 'Pagani' => 'orange']

For more details see here.

webdevetc profile pic
webdevetc

I am a 29 year old backend web developer from London, mostly focusing on PHP and Laravel lately. This (webdevetc.com) is my blog where I write about some web development topics (PHP, Laravel, Javascript, and some server stuff). contact me here.



More...


Comments and discussion about How to generate an array for a dropdown (with ['key' => 'value']) suitable for a dropdown, from a Laravel collection of Eloquent objects?

Found this interesting? Maybe you want to read some more in this series?

Or see other topics in the Laravel language

Or see other languages/frameworks:
PHP Laravel Composer Apache CentOS and Linux Stuff WordPress General Webdev and Programming Stuff JavaScript
Or see random questions

301 Redirect a single URL in .htaccess to a new location

How to do comments in Blade files?

How to merge/concat two arrays together in JS?

What is the difference between var, let and const in Javascript?

How to disable file hotlinking in Apache with .htaccess

Set PHP config Variables (like ini_set) with .htaccess

How to run an artisan command from a controller

What does PEAR stand for?

Force trailing slash (redirect if no trailing slash exists) in .htaccess

How to make Apache force download of files (in .htaccess)