README

A fast log file viewer for Laravel that is easy to add and configure.

Features

• Compatible with Laravel 8 + 9 + 10
• Read big log files with ease without reaching the memory limit
• Includable in your own blade templates, or using a predefined layout
• Bootstrap 3 + 4 + 5 templates
• Bootstrap 5 comes with a Dark Mode setting

Dark Mode	Light Mode

Installation

1. Install package:

composer require bert-w/laravel-log-viewer

1. (This happens automatically, except if you bypass package discovery) Add the service provider to your config/app.php:

'providers' => [
    // ...
    BertW\LaravelLogViewer\LogViewerServiceProvider::class,
]

The service provider sets up the views, routes, configuration and authentication. A \BertW\LaravelLogViewer\LogViewer::class is also bound as a singleton to the service container. This allows you to inject the log viewer anywhere (for instance in your custom controller) using $logViewer = app(\BertW\LaravelLogViewer\LogViewer::class). 3. a) (optional) Publish configuration file:

php artisan vendor:publish --provider=BertW\LaravelLogViewer\LogViewerServiceProvider

1. b) or copy it manually into config/logviewer.php:

<?php

return [
    /*
    | The base URI for the log viewer.
    */
    'url' => '/logviewer',

    /*
    | The route name prefix to use for the logviewer route names.
    */
    'route_name_prefix' => 'logviewer.',

    /*
    | Display name for log files when they are listed in the interface, which is one of:
    | 'short' (filename only) or 'full' (absolute path).
    */
    'log_display_name' => 'short',

    /*
    | The title for the logviewer page. If `null`, no title is shown.
    */
    'title' => config('app.name') . ' Log Viewer',

    /*
    | The storage path that contains the logs to be displayed in the log viewer.
    */
    'storage_path' => storage_path('logs'),

    /*
    | The amount of lines from a log file that are read per page. The amount of logs that
    | are shown per page depends on this value, and it may differ depending on the
    | length of a single log record (Default: 3200).
    */
    'lines_per_page' => 3200,

    /*
    | The max length in bytes that a single line may have. Content that exceeds this limit will
    | be truncated from view. Note: disabling this feature with `null` may cause memory issues
    | with big log files that exceed this max line length (Default: 16000).
    */
    'max_line_length' => 16000,

    /*
    | The threshold in bytes for a log file to be marked as "big". This allows
    | the frontend to visually indicate that the log file is big (Default: 64MB).
    */
    'big_file_threshold' => 2**26,

    /*
    | The sorting order of the log files how they appear in the interface.
    */
    'sort_by' => ['modified_at', 'desc'],

    /*
    | Preselect the first log file based on the given ordering.
    | If `null`, no log file will be opened by default.
    */
    'preselect' => ['modified_at', 'desc'],
];

1. By default, your log viewer should be available at /logviewer. For customization, see the Customization section below.

Authorization

Setting up authorization for the log viewer is easy: within any loaded service provider (like AppServiceProvider), add the following lines in your register() method:

\BertW\LaravelLogViewer\LogViewer::auth(function(\Illuminate\Http\Request $request) {
    return $request->user()->role === 'admin';
});

By default, if no custom authorization callback is given, the log viewer is only accessible in your local environment.

Customization

Including the log viewer in one of your own templates can be done simply by modifying the view file resources/views/vendor/logviewer/index.blade.php (available after the publish-command), which has the following default:

@extends('logviewer::bootstrap-5.layout')
@section('content')
    <div class="container">
        @include('logviewer::bootstrap-5.index')
    </div>
@endsection

The standard layout contains pre-included Bootstrap CSS/JS files linked from https://cdn.jsdelivr.net.