bhavin-gajjar/laravel-coder-lora-train huggingface dataset:
[Laravel 13] Explain precognition: Using React

Using Laravel Precognition, you can offer live validation experiences to your users without having to duplicate your validation rules in your frontend React application. To illustrate how it works, let's build a form for creating new users within our application.

First, to enable Precognition for a route, the HandlePrecognitiveRequests middleware should be added to the route definition. You should also create a form request to house the route's validation rules:

Next, you should install the Laravel Precognition frontend helpers for React via NPM:

With the Laravel Precognition package installed, you can now create a form object using Precognition's useForm function, providing the HTTP method (post), the target URL (/users), and the initial form data.

To enable live validation, you should listen to each input's change and blur event. In the change event handler, you should set the form's data with the setData function, passing the input's name and new value. Then, in the blur event handler invoke the form's validate method, providing the input's name:

Now, as the form is filled by the user, Precognition will provide live validation output powered by the validation rules in the route's form request. When the form's inputs are changed, a debounced "precognitive" validation request will be sent to your Laravel application. You may configure the debounce timeout by calling the form's setValidationTimeout function:

When a validation request is in-flight, the form's validating property will be true:

Any validation errors returned during a validation request or a form submission will automatically populate the form's errors object:

You can determine if the form has any errors using the form's hasErrors property:

You may also determine if an input has passed or failed validation by passing the input's name to the form's valid and invalid functions, respectively:

> [!WARNING]
> A form input will only appear as valid or invalid once it has changed and a validation res
[Laravel 13] Explain precognition: Using Alpine and Blade

Using Laravel Precognition, you can offer live validation experiences to your users without having to duplicate your validation rules in your frontend Alpine application. To illustrate how it works, let's build a form for creating new users within our application.

First, to enable Precognition for a route, the HandlePrecognitiveRequests middleware should be added to the route definition. You should also create a form request to house the route's validation rules:

Next, you should install the Laravel Precognition frontend helpers for Alpine via NPM:

Then, register the Precognition plugin with Alpine in your resources/js/app.js file:

With the Laravel Precognition package installed and registered, you can now create a form object using Precognition's $form "magic", providing the HTTP method (post), the target URL (/users), and the initial form data.

To enable live validation, you should bind the form's data to its relevant input and then listen to each input's change event. In the change event handler, you should invoke the form's validate method, providing the input's name:

Now, as the form is filled by the user, Precognition will provide live validation output powered by the validation rules in the route's form request. When the form's inputs are changed, a debounced "precognitive" validation request will be sent to your Laravel application. You may configure the debounce timeout by calling the form's setValidationTimeout function:

When a validation request is in-flight, the form's validating property will be true:

Any validation errors returned during a validation request or a form submission will automatically populate the form's errors object:

You can determine if the form has any errors using the form's hasErrors property:

You may also determine if an input has passed or failed validation by passing the input's name to the form's valid and invalid functions, respectively:

> [!WARNING]
> A form input will only appear as valid or invalid once it has chan
[Laravel 13] Explain precognition: Repopulating Old Form Data

In the user creation example discussed above, we are using Precognition to perform live validation; however, we are performing a traditional server-side form submission to submit the form. So, the form should be populated with any "old" input and validation errors returned from the server-side form submission:

Alternatively, if you would like to submit the form via XHR you may use the form's submit function, which returns an Axios request promise:

<a name="configuring-axios"></a>
[Laravel 13] Explain processes: Processes

- Introduction
- Invoking Processes
    - Process Options
    - Process Output
    - Pipelines
- Asynchronous Processes
    - Process IDs and Signals
    - Asynchronous Process Output
    - Asynchronous Process Timeouts
- Concurrent Processes
    - Naming Pool Processes
    - Pool Process IDs and Signals
- Testing
    - Faking Processes
    - Faking Specific Processes
    - Faking Process Sequences
    - Faking Asynchronous Process Lifecycles
    - Available Assertions
    - Preventing Stray Processes

<a name="introduction"></a>
[Laravel 13] Explain processes: Invoking Processes

To invoke a process, you may use the run and start methods offered by the Process facade. The run method will invoke a process and wait for the process to finish executing, while the start method is used for asynchronous process execution. We'll examine both approaches within this documentation. First, let's examine how to invoke a basic, synchronous process and inspect its result:

Of course, the Illuminate\Contracts\Process\ProcessResult instance returned by the run method offers a variety of helpful methods that may be used to inspect the process result:

<a name="throwing-exceptions"></a>
[Laravel 13] Explain prompts: Prompts

- Introduction
- Installation
- Available Prompts
    - Text
    - Textarea
    - Number
    - Password
    - Confirm
    - Select
    - Multi-select
    - Suggest
    - Search
    - Multi-search
    - Pause
    - Autocomplete
- Transforming Input Before Validation
- Forms
- Informational Messages
- Callouts
- Tables
- Spin
- Progress Bar
- Task
- Stream
- Terminal Title
- Clearing the Terminal
- Terminal Considerations
- Unsupported Environments and Fallbacks
- Testing

<a name="introduction"></a>
[Laravel 13] Explain prompts: Introduction

Laravel Prompts is a PHP package for adding beautiful and user-friendly forms to your command-line applications, with browser-like features including placeholder text and validation.

<img src="https://laravel.com/img/docs/prompts-example.png">

Laravel Prompts is perfect for accepting user input in your Artisan console commands, but it may also be used in any command-line PHP project.

> [!NOTE]
> Laravel Prompts supports macOS, Linux, and Windows with WSL. For more information, please see our documentation on unsupported environments & fallbacks.

<a name="installation"></a>
[Laravel 13] Explain prompts: Additional Validation

Finally, if you would like to perform additional validation logic, you may pass a closure to the validate argument:

The closure will receive the value that has been entered and may return an error message, or null if the validation passes.

Alternatively, you may leverage the power of Laravel's validator. To do so, provide an array containing the name of the attribute and the desired validation rules to the validate argument:

<a name="textarea"></a>
[Laravel 13] Explain providers: Introduction

Service providers are the central place of all Laravel application bootstrapping. Your own application, as well as all of Laravel's core services, are bootstrapped via service providers.

But, what do we mean by "bootstrapped"? In general, we mean **registering** things, including registering service container bindings, event listeners, middleware, and even routes. Service providers are the central place to configure your application.

Laravel uses dozens of service providers internally to bootstrap its core services, such as the mailer, queue, cache, and others. Many of these providers are "deferred" providers, meaning they will not be loaded on every request, but only when the services they provide are actually needed.

All user-defined service providers are registered in the bootstrap/providers.php file. In the following documentation, you will learn how to write your own service providers and register them with your Laravel application.

> [!NOTE]
> If you would like to learn more about how Laravel handles requests and works internally, check out our documentation on the Laravel request lifecycle.

<a name="writing-service-providers"></a>
[Laravel 13] Explain providers: Writing Service Providers

All service providers extend the Illuminate\Support\ServiceProvider class. Most service providers contain a register and a boot method. Within the register method, you should **only bind things into the service container**. You should never attempt to register any event listeners, routes, or any other piece of functionality within the register method.

The Artisan CLI can generate a new provider via the make:provider command. Laravel will automatically register your new provider in your application's bootstrap/providers.php file:

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[Laravel 13] Explain providers: The Register Method

As mentioned previously, within the register method, you should only bind things into the service container. You should never attempt to register any event listeners, routes, or any other piece of functionality within the register method. Otherwise, you may accidentally use a service that is provided by a service provider which has not loaded yet.

Let's take a look at a basic service provider. Within any of your service provider methods, you always have access to the $app property which provides access to the service container:

This service provider only defines a register method, and uses that method to define an implementation of App\Services\Riak\Connection in the service container. If you're not yet familiar with Laravel's service container, check out its documentation.

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[Laravel 13] Explain pulse: Laravel Pulse

- Introduction
- Installation
    - Configuration
- Dashboard
    - Authorization
    - Customization
    - Resolving Users
    - Cards
- Capturing Entries
    - Recorders
    - Filtering
- Performance
    - Using a Different Database
    - Redis Ingest
    - Sampling
    - Trimming
    - Handling Pulse Exceptions
- Custom Cards
    - Card Components
    - Styling
    - Data Capture and Aggregation

<a name="introduction"></a>
[Laravel 13] Explain pulse: Installation

> [!WARNING]
> Pulse's first-party storage implementation currently requires a MySQL, MariaDB, or PostgreSQL database. If you are using a different database engine, you will need a separate MySQL, MariaDB, or PostgreSQL database for your Pulse data.

You may install Pulse using the Composer package manager:

Next, you should publish the Pulse configuration and migration files using the vendor:publish Artisan command:

Finally, you should run the migrate command in order to create the tables needed to store Pulse's data:

Once Pulse's database migrations have been run, you may access the Pulse dashboard via the /pulse route.

> [!NOTE]
> If you do not want to store Pulse data in your application's primary database, you may specify a dedicated database connection.

<a name="configuration"></a>
[Laravel 13] Explain pulse: Customization

The Pulse dashboard cards and layout may be configured by publishing the dashboard view. The dashboard view will be published to resources/views/vendor/pulse/dashboard.blade.php:

The dashboard is powered by Livewire, and allows you to customize the cards and layout without needing to rebuild any JavaScript assets.

Within this file, the <x-pulse> component is responsible for rendering the dashboard and provides a grid layout for the cards. If you would like the dashboard to span the full width of the screen, you may provide the full-width prop to the component:

By default, the <x-pulse> component will create a 12 column grid, but you may customize this using the cols prop:

Each card accepts a cols and rows prop to control the space and positioning:

Most cards also accept an expand prop to show the full card instead of scrolling:

<a name="dashboard-resolving-users"></a>
[Laravel 13] Explain queries: Database: Query Builder

- Introduction
- Running Database Queries
    - Chunking Results
    - Streaming Results Lazily
    - Aggregates
- Select Statements
- Raw Expressions
- Joins
- Unions
- Basic Where Clauses
    - Where Clauses
    - Or Where Clauses
    - Where Not Clauses
    - Where Any / All / None Clauses
    - JSON Where Clauses
    - Additional Where Clauses
    - Logical Grouping
- Advanced Where Clauses
    - Where Exists Clauses
    - Subquery Where Clauses
    - Full Text Where Clauses
    - Vector Similarity Clauses
- Ordering, Grouping, Limit and Offset
    - Ordering
    - Grouping
    - Limit and Offset
- Conditional Clauses
- Insert Statements
    - Upserts
- Update Statements
    - Updating JSON Columns
    - Increment and Decrement
- Delete Statements
- Pessimistic Locking
- Reusable Query Components
- Debugging

<a name="introduction"></a>
[Laravel 13] Explain queries: Introduction

Laravel's database query builder provides a convenient, fluent interface to creating and running database queries. It can be used to perform most database operations in your application and works perfectly with all of Laravel's supported database systems.

The Laravel query builder uses PDO parameter binding to protect your application against SQL injection attacks. There is no need to clean or sanitize strings passed to the query builder as query bindings.

> [!WARNING]
> PDO does not support binding column names. Therefore, you should never allow user input to dictate the column names referenced by your queries, including "order by" columns.

<a name="running-database-queries"></a>
[Laravel 13] Explain queries: Retrieving All Rows From a Table

You may use the table method provided by the DB facade to begin a query. The table method returns a fluent query builder instance for the given table, allowing you to chain more constraints onto the query and then finally retrieve the results of the query using the get method:

The get method returns an Illuminate\Support\Collection instance containing the results of the query where each result is an instance of the PHP stdClass object. You may access each column's value by accessing the column as a property of the object:

> [!NOTE]
> Laravel collections provide a variety of extremely powerful methods for mapping and reducing data. For more information on Laravel collections, check out the collection documentation.

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[Laravel 13] Explain queries: Retrieving a Single Row / Column From a Table

If you just need to retrieve a single row from a database table, you may use the DB facade's first method. This method will return a single stdClass object:

If you would like to retrieve a single row from a database table, but throw an Illuminate\Database\RecordNotFoundException if no matching row is found, you may use the firstOrFail method. If the RecordNotFoundException is not caught, a 404 HTTP response is automatically sent back to the client:

If you don't need an entire row, you may extract a single value from a record using the value method. This method will return the value of the column directly:

To retrieve a single row by its id column value, use the find method:

<a name="retrieving-a-list-of-column-values"></a>
[Laravel 13] Explain queries: Chunking Results

If you need to work with thousands of database records, consider using the chunk method provided by the DB facade. This method retrieves a small chunk of results at a time and feeds each chunk into a closure for processing. For example, let's retrieve the entire users table in chunks of 100 records at a time:

You may stop further chunks from being processed by returning false from the closure:

If you are updating database records while chunking results, your chunk results could change in unexpected ways. If you plan to update the retrieved records while chunking, it is always best to use the chunkById method instead. This method will automatically paginate the results based on the record's primary key:

Since the chunkById and lazyById methods add their own "where" conditions to the query being executed, you should typically logically group your own conditions within a closure:

> [!WARNING]
> When updating or deleting records inside the chunk callback, any changes to the primary key or foreign keys could affect the chunk query. This could potentially result in records not being included in the chunked results.

<a name="streaming-results-lazily"></a>
[Laravel 13] Explain queues: Queues

- Introduction
    - Connections vs. Queues
    - Driver Notes and Prerequisites
- Creating Jobs
    - Generating Job Classes
    - Class Structure
    - Unique Jobs
    - Debounced Jobs
    - Encrypted Jobs
- Job Middleware
    - Rate Limiting
    - Preventing Job Overlaps
    - Throttling Exceptions
    - Skipping Jobs
- Dispatching Jobs
    - Delayed Dispatching
    - Synchronous Dispatching
    - Bulk Dispatching
    - Preparing Jobs Before Dispatch
    - Jobs & Database Transactions
    - Job Chaining
    - Customizing The Queue and Connection
    - Specifying Max Job Attempts / Timeout Values
    - SQS FIFO and Fair Queues
    - Queue Failover
    - Error Handling
- Job Batching
    - Defining Batchable Jobs
    - Dispatching Batches
    - Chains and Batches
    - Adding Jobs to Batches
    - Inspecting Batches
    - Cancelling Batches
    - Batch Failures
    - Pruning Batches
    - Storing Batches in DynamoDB
- Queueing Closures
- Running the Queue Worker
    - The queue:work Command
    - Queue Priorities
    - Queue Workers and Deployment
    - Reacting to Worker Signals
    - Job Expirations and Timeouts
    - Pausing and Resuming Queue Workers
- Supervisor Configuration
- Dealing With Failed Jobs
    - Cleaning Up After Failed Jobs
    - Retrying Failed Jobs
    - Ignoring Missing Models
    - Pruning Failed Jobs
    - Storing Failed Jobs in DynamoDB
    - Disabling Failed Job Storage
    - Failed Job Events
- Clearing Jobs From Queues
- Monitoring Your Queues
- Testing
    - Faking a Subset of Jobs
    - Testing Job Chains
    - Testing Job Batches
    - Testing Job / Queue Interactions
- Job Events

<a name="introduction"></a>
[Laravel 13] Explain queues: Introduction

While building your web application, you may have some tasks, such as parsing and storing an uploaded CSV file, that take too long to perform during a typical web request. Thankfully, Laravel allows you to easily create queued jobs that may be processed in the background. By moving time intensive tasks to a queue, your application can respond to web requests with blazing speed and provide a better user experience to your customers.

Laravel queues provide a unified queueing API across a variety of different queue backends, such as Amazon SQS, Redis, or even a relational database.

Laravel's queue configuration options are stored in your application's config/queue.php configuration file. In this file, you will find connection configurations for each of the queue drivers that are included with the framework, including the database, Amazon SQS, Redis, and Beanstalkd drivers, as well as a synchronous driver that will execute jobs immediately (for use during development or testing). A null queue driver is also included which discards queued jobs.

> [!NOTE]
> Laravel Horizon is a beautiful dashboard and configuration system for your Redis powered queues. Check out the full Horizon documentation for more information.

<a name="connections-vs-queues"></a>
[Laravel 13] Explain queues: Connections vs. Queues

Before getting started with Laravel queues, it is important to understand the distinction between "connections" and "queues". In your config/queue.php configuration file, there is a connections configuration array. This option defines the connections to backend queue services such as Amazon SQS, Beanstalk, or Redis. However, any given queue connection may have multiple "queues" which may be thought of as different stacks or piles of queued jobs.

Note that each connection configuration example in the queue configuration file contains a queue attribute. This is the default queue that jobs will be dispatched to when they are sent to a given connection. In other words, if you dispatch a job without explicitly defining which queue it should be dispatched to, the job will be placed on the queue that is defined in the queue attribute of the connection configuration:

Some applications may not need to ever push jobs onto multiple queues, instead preferring to have one simple queue. However, pushing jobs to multiple queues can be especially useful for applications that wish to prioritize or segment how jobs are processed, since the Laravel queue worker allows you to specify which queues it should process by priority. For example, if you push jobs to a high queue, you may run a worker that gives them higher processing priority:

<a name="driver-prerequisites"></a>
[Laravel 13] Explain rate limiting: Basic Usage

The Illuminate\Support\Facades\RateLimiter facade may be used to interact with the rate limiter. The simplest method offered by the rate limiter is the attempt method, which rate limits a given callback for a given number of seconds.

The attempt method returns false when the callback has no remaining attempts available; otherwise, the attempt method will return the callback's result or true. The first argument accepted by the attempt method is a rate limiter "key", which may be any string of your choosing that represents the action being rate limited:

If necessary, you may provide a fourth argument to the attempt method, which is the "decay rate", or the number of seconds until the available attempts are reset. For example, we can modify the example above to allow five attempts every two minutes:

<a name="manually-incrementing-attempts"></a>
[Laravel 13] Explain rate limiting: Manually Incrementing Attempts

If you would like to manually interact with the rate limiter, a variety of other methods are available. For example, you may invoke the tooManyAttempts method to determine if a given rate limiter key has exceeded its maximum number of allowed attempts per minute:

When rate limiting an endpoint that may receive many simultaneous requests, you may wish to check the value returned by the increment method instead of using tooManyAttempts and increment as separate operations. When using the redis, memcached, or database cache stores, this value is incremented atomically, ensuring each concurrent request receives a unique count:

Alternatively, you may use the remaining method to retrieve the number of attempts remaining for a given key. If a given key has retries remaining, you may invoke the increment method to increment the number of total attempts:

If you would like to increment the value for a given rate limiter key by more than one, you may provide the desired amount to the increment method:

<a name="determining-limiter-availability"></a>
[Laravel 13] Explain redis: Introduction

Redis is an open source, advanced key-value store. It is often referred to as a data structure server since keys can contain strings, hashes, lists, sets, and sorted sets.

Before using Redis with Laravel, we encourage you to install and use the PhpRedis PHP extension via PECL. The extension is more complex to install compared to "user-land" PHP packages but may yield better performance for applications that make heavy use of Redis. If you are using Laravel Sail, this extension is already installed in your application's Docker container.

If you are unable to install the PhpRedis extension, you may install the predis/predis package via Composer. Predis is a Redis client written entirely in PHP and does not require any additional extensions:

<a name="configuration"></a>