How to profile a slow Laravel application?
EnableDebugbarorTelescopeinlocalenvtogetreal-timeinsightsintoqueries,rendering,andmemoryusage;2.CheckforN 1queriesusingeagerloadingandoptimizeslowqueriesbyaddingindexesonfrequentlyqueriedcolumns;3.BenchmarkslowcodeblocksusingLog::debug()orLaravel’sbe
Jul 29, 2025 am 01:21 AM
Using Eloquent Query Scopes in Laravel.
Eloquent query scope improves code clarity and reusability by encapsulating common query logic. 1. The local scope is defined with a method starting with scope, such as scopeActive() is used to filter enabled users; 2. The dynamic scope supports parameter passing, such as scopeStatus($status) to achieve flexible state filtering; 3. The global scope is automatically applied to all queries, suitable for data isolation but needs to be used with caution; 4. Multiple scopes can be combined in chains to enhance semantic expression and maintenance; 5. Complex queries can be centrally processed through conditional judgments to improve flexibility.
Jul 29, 2025 am 01:19 AM
How to write a feature test in Laravel?
When writing feature tests in Laravel, you need to use Artisan to generate test classes and simulate user behavior. 1. Generate test files through phpartisanmake:testExampleFeatureTest--feature, the test class inherits TestCase and uses RefreshDatabase and other traits to process the database. 2. Use $this->get, ->post and other methods to simulate HTTP requests, and combine assertStatus, assertRedirect and other assertion verification responses. 3. You can simulate user login through actingAs and prepare data in combination with the model factory. 4. Characteristic measurement
Jul 29, 2025 am 01:17 AM
Laravel events and listeners tutorial
Create events and listeners: Use the Artisan command to generate UserRegistered events and SendWelcomeEmail and LogUserRegistration listeners; 2. Define event classes: Inject user instances into the UserRegistered constructor for listeners to access; 3. Write listener logic: SendWelcomeEmail sends welcome emails, and LogUserRegistration records user registration logs; 4. Register events and listeners: bind events and listeners in the $listen array of EventServiceProvider; 5. Distribute events: pass e after user registration.
Jul 29, 2025 am 01:10 AM
How to set up a Content Security Policy (CSP) in Laravel?
Createamiddlewareusingphpartisanmake:middlewareAddCspHeadersandimplementtheCSPheaderinthehandlemethodwithapolicylikedefault-src'self';whileavoiding'unsafe-inline'and'unsafe-eval'inproduction;2.Registerthemiddlewaregloballyinthe$middlewarearrayorapply
Jul 29, 2025 am 01:06 AM
How to get the last inserted ID in Laravel?
Use$user->idafterModel::create()or$user->save()togetthelastinsertedIDwithEloquent.2.UseDB::table('table')->insertGetId()wheninsertingdirectlyviaQueryBuildertoretrievetheID.3.AvoidDB::table('table')->insert()ifyouneedtheID,asitreturnsonlya
Jul 29, 2025 am 01:03 AM
What are Accessors and Mutators in Laravel Eloquent?
Accessor is used to format data when obtaining attributes, such as capitalization; Mutator is used to set the attributes before processing data, such as encryption password. For example: 1. Accessor uses the get{AttributeName}Attribute method to modify the display when reading the field, such as ucfirst processing the name; 2. Mutator uses the set{AttributeName}Attribute method to convert data before saving the field, such as bcrypt encryption password; 3. It can be used in scenarios such as time formatting, splicing fields, cleaning input, etc., and can be used to multiplex logic through Trait. Combined fields need to be added to the $appends array to support JSON output.
Jul 28, 2025 am 04:30 AM
How to run a Laravel project?
CheckPHP>=8.1,Composer,andwebserver;2.Cloneorcreateprojectandruncomposerinstall;3.Copy.env.exampleto.envandrunphpartisankey:generate;4.Setdatabasecredentialsin.envandrunphpartisanmigrate--seed;5.Startserverwithphpartisanserve;6.Optionallyrunnpmins
Jul 28, 2025 am 04:28 AM
How to set up Vite in a Laravel project?
EnsureLaravel9 andPHP8.0 areused,asViteissupportedoutofthebox;upgradeifonanolderversion.2.InstallViteandrequiredpluginsvianpminstallormanuallyaddviteandlaravel-vite-pluginifmissing,alongwithframework-specificpluginslike@vitejs/plugin-reactor@vitejs/p
Jul 28, 2025 am 04:28 AM
How to define a one-to-one relationship in Eloquent?
In LaravelEloquent, defining a one-to-one relationship requires first setting the database foreign key and associating the model using hasOne and belongsTo methods. 1. Create a unique foreign key pointing to the users table in the phones table through foreignId('user_id')->unique(); 2. Define publicfunctionphone() in the User model {return$this->hasOne(Phone::class); } means that the user has a phone; 3. Define publicfunctionuser(){return$this-
Jul 28, 2025 am 04:25 AM
How to set up Laravel with Docker?
Create a Laravel project using Composer container; 2. Write a Dockerfile containing PHP extensions and Apache configuration; 3. Define app, MySQL and phpMyAdmin services through docker-compose.yml; 4. Configure the Apache virtual host to support Laravel routing; 5. Update the .env file to set up database connections; 6. Run docker-composeup-d--build to start the container; 7. Execute Composer installation and key generation in the container; 8. Optional run migration; 9. Use docker-composeexec to execute Artisan commands during development
Jul 28, 2025 am 04:24 AM
Laravel lazy loading vs eager loading
Lazy loading only queries when accessing associations can easily lead to N 1 problems, which is suitable for scenarios where the associated data is not determined whether it is needed; 2. Emergency loading uses with() to load associated data in advance to avoid N 1 queries, which is suitable for batch processing scenarios; 3. Emergency loading should be used to optimize performance, and N 1 problems can be detected through tools such as LaravelDebugbar, and the $with attribute of the model is carefully used to avoid unnecessary performance overhead.
Jul 28, 2025 am 04:23 AM
How to seed a database in Laravel?
Create a seeder file: Use phpartisanmake:seederUserSeeder to generate the seeder class, and insert data through the model factory or database query in the run method; 2. Call other seeder in DatabaseSeeder: register UserSeeder, PostSeeder, etc. in order through $this->call() to ensure the dependency is correct; 3. Run seeder: execute phpartisandb:seed to run all registered seeders, or use phpartisanmigrate:fresh--seed to reset and refill the data; 4
Jul 28, 2025 am 04:23 AM
What is Laravel Sail?
LaravelSailisacommand-lineinterfacethatsimplifiesLaraveldevelopmentusingDockerbyprovidingapre-configuredenvironmentwithoutrequiringDockerexpertise;iteliminateslocalsetupconflicts,supportsconsistentteamenvironments,andenablesquickprojectinitialization
Jul 28, 2025 am 04:19 AM
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