How to insert multiple rows from a single query using eloquent/fluent

Question

I have the following query:

  $query = UserSubject::where('user_id', Auth::id())->select('subject_id')->get();

and as expected I get the following result:

[{"user_id":8,"subject_id":9},{"user_id":8,"subject_id":2}]

Is there a way of copying the above result into another table so that my table looks like this?

ID|user_id|subject_id
1 |8      |9
2 |8      |2

The problem I have is that the $query can expect any number of rows and so im unsure how to iterate through an unknown number of rows.

Eugenieeugenio

in case anyone still needs it: github.com/laravel/framework/issues/1295#issuecomment-193025045 – Espy

Answer 1

It is really easy to do a bulk insert in Laravel using Eloquent or the query builder.

You can use one of the following techniques.

$data = [
    ['user_id'=>'Coder 1', 'subject_id'=> 4096],
    ['user_id'=>'Coder 2', 'subject_id'=> 2048],
    //...
];

1. Eloquent approach:

Model::insert($data); // calls mutators including timestamps

2. Query Builder approach:

DB::table('table')->insert($data); // does not call mutators

Casias

I've tried that but unfortunately it's recognising my result as an object and not an array – Eugenieeugenio

Use the ->toArray() method on the object collection. – Casias

It does not insert the timestamps. – Chanukah

add 'created_at'=>date('Y-m-d H:i:s'), 'modified_at'=> date('Y-m-d H:i:s') into your array. source: https://mcmap.net/q/117027/-bulk-insertion-in-laravel-using-eloquent-orm – Crowded

I wonder why Laravel doesn't have something like 'createMany' for this. – Embroideress

I believe this approach will not trigger on_save and on_create event handlers declared it the "boot" method. – Speech

@JoeriShoeby the OP wanted to do a batch INSERT. The HasOneMany::saveMany() doesn't do that. Eloquent sources are self-explainatory – Divider

What if i have an array like this ` $array = ["54928328", "Carrie","Swift"]; ` ? – Subdebutante

How do I retrieve the ids? – Fishhook

This technique is not inserting the created date. What should i do to insert created data with it? @KreshnikHasanaj – Hypolimnion

@Fishhook Not a very Eloquent solution, but you could create a insertGetIds method, that just iterates over each element in the array of arrays and calls insertGetId and pushes that ID to an array, and then return that array of IDs. – Liturgy

i tried ->toArray() as well but still it considers the collection as object. ``` $data =DB::table(DB::raw('users'))->select('name','id','email')->where('name','like','Abdulh%')->orderBy('id')->get(); ``` DB::table('staff')->insert($data); – Patchy

what to do when my array size is bigger than 10 thousands? – Eczema

In this case of multiple records insertion, can i add a condition which checks if the id field value already exists in db table then that record will not be inserted. Please help. Eloquent updateOrCreate method works only for 1 record. – Curtsy

This is the most applicable answer! How do we put this in DB:transaction? – Goddamn

Answer 2

using Eloquent

$data = array(
    array('user_id'=>'Coder 1', 'subject_id'=> 4096),
    array('user_id'=>'Coder 2', 'subject_id'=> 2048),
    //...
);

Model::insert($data);

Antagonism

insert is method of query builder. Accessor and mutators will not work with this insert – Jacy

Answer 3

It is really easy to do a bulk insert in Laravel with or without the query builder. You can use the following official approach.

Entity::upsert([
    ['name' => 'Pierre Yem Mback', 'city' => 'Eseka', 'salary' => 10000000],
    ['name' => 'Dial rock 360', 'city' => 'Yaounde', 'salary' => 20000000],
    ['name' => 'Ndibou La Menace', 'city' => 'Dakar', 'salary' => 40000000]
], ['name', 'city'], ['salary']);

Electroanalysis

I could be mistaken but isn't this version 8 only? – Dorado

laravel doc on upsert = update or insert. – Berezina

github.com/laravel/framework/discussions/38938 this is one of the issue you'd face. – Slackjawed