Have you used all 10 of Laravel’s tips

This article introduces some common Laravel usages, well, you might be able to use them…

1. Specify attributes in the find method

User::find(1, ['name', 'email']);
User::findOrFail(1, ['name', 'email']);
Copy the code

You can Clone a Model with the replicate method

$user = User::find(1);
$newUser = $user->replicate();
$newUser->save();
Copy the code

3. Check whether the two models are the same. Check whether the IDS of the two models are the same

$user = User::find(1);
$sameUser = User::find(1);
$diffUser = User::find(2);
$user->is($sameUser); // true
$user->is($diffUser); // false;
Copy the code

4. Reload a Model

$user = User::find(1); $user->name; // 'Peter' // If name is updated, such as by Peter to John $user->refresh(); $user->name; // JohnCopy the code

5. Load the new Model

$user = App\User::first();
$user->name;    // John
//
$updatedUser = $user->fresh(); 
$updatedUser->name;  // Peter
$user->name;    // John
Copy the code

Update all models with associations using the push method when updating associations

class User extends Model { public function phone() { return $this->hasOne('App\Phone'); } } $user = User::first(); $user->name = "Peter"; $user->phone->number = '1234567890'; $user->save(); // update User Model $User ->push(); // Update User and Phone modelsCopy the code

Laravel uses deleted_AT as the default soft delete field. We changed deleted_AT to IS_deleted in the following way

class User extends Model { use SoftDeletes; * * @var string */ const deleted_at = 'is_deleted'; }Copy the code

Or use accessors

class User extends Model { use SoftDeletes; public function getDeletedAtColumn(){ return 'is_deleted'; }}Copy the code

8. Query the properties changed by Model

$user = User::first(); $user->name; // John $user->name = 'Peter'; $user->save(); dd($user->getChanges()); / / output: [' name '= >' John ', 'updated_at' = > '... ']Copy the code

9. Check whether the Model has changed

$user = User::first();
$user->name;    // John
$user->isDirty();  // false 
$user->name = 'Peter'; 
$user->isDirty();  // true
$user->getDirty();  // ['name' => 'Peter']
$user->save();   
$user->isDirty();  // false
Copy the code

The difference between getChanges() and getDirty() is used to print the result set after the save() method

10. Query the Model information before the modification

$user = App\User::first();
$user->name;     //John
$user->name = "Peter";   //Peter
$user->getOriginal('name'); //John
$user->getOriginal();   //Original $user record
Copy the code