DEV Community: vic

An Online Gantt Chart Generator

vic — Thu, 24 Apr 2025 02:59:29 +0000

Go to https://gantt-online.com/ and click the Create Gantt chart button. You can directly edit or add tasks by clicking on the task name (press Enter to add a task), and then click the "Save" button in the top right corner. The URL in your browser will now display the unique hash address for this Gantt chart, allowing you to open this link and continue editing later.

For example: https://gantt-online.com/gatt/5a961c12eee956135f961c4e88

Click the Share tool in the top right corner to get the SVG format online link of the Gantt chart.

For example : https://gantt-online.com/api/svg/5a961c12eee956135f961c4e88/?lang=en&zone=8

The SVG image contains two parameters (which you can modify yourself):

lang (language): en, zh-cn, zh-tw, ja, ko, fr, de, es, pt (9 languages)
zone (timezone): -12 to +12

Since this image is online, the image will automatically refresh with the latest version after you make changes to the Gantt chart. If you reference this image in other documents, it will stay up-to-date in real time, making it perfect for project planning and progress tracking.

If you prefer to download the image, PNG format is also available.

For larger projects with a longer timeline, you can adjust the date granularity by dragging. The granularity supports three options: day, week, and month.

The task sidebar can also be adjusted or hidden as needed.

Private Deployment Gantt chart Project management tools

vic — Fri, 15 Mar 2024 01:18:40 +0000

Dependent Components

Database mysql

Deployment Steps

Go to download the corresponding installation file from https://gantt-online.com/deploy and unzip it
Enter the unzipped folder in the command line window and modify the configuration content of conf.yaml
Execute the command ./gantt-online -c to get the client token (root permission is required on Linux)
Copy the token from Step 3 to create a license authorization code
Copy the license created in Step 4 and fill it into the configuration file conf.yaml
Initialize the service ./gantt-online -i -f conf.yaml (root permission required on Linux)
Start the service ./gantt-online -f conf.yaml (root permission required on Linux)

If on Windows, the command ./gantt-online needs to be changed to gantt-online.exe

Daemon Process Running Method

Linux

Recommends Using systemd

Shortcut ( ./gantt-online -f conf.yaml &)

Recommend using the following method



Copy code
#/usr/lib/systemd/system/gantt-online.service 
#sudo systemctl daemon-reload  

[Unit]  
Description=zz plan   


[Service]
Type=simple
# Fill in the absolute path of your running file and configuration below  
ExecStart=/home/gantt/start -f /home/gantt/conf.yaml  
Restart=always
RestartSec=9  
User=root  
Group= root

[Install]  
WantedBy=multi-user.target

Enable the service systemctl enable gantt-online.service
Start the service systemctl start gantt-online.service
Stop the service systemctl stop gantt-online.service
Restart the service systemctl restart gantt-online.service

mac

( ./gantt-online -f conf.yaml &) or use launchctl to manage

windows

Can use nssm for service management

Dependent Components

Database mysql

Deployment Steps

Go to download the corresponding installation file from https://gantt-online.com/deploy and unzip it
Enter the unzipped folder in the command line window and modify the configuration content of conf.yaml
Execute the command ./gantt-online -c to get the client token (root permission is required on Linux)
Copy the token from Step 3 to create a license authorization code
Copy the license created in Step 4 and fill it into the configuration file conf.yaml
Initialize the service ./gantt-online -i -f conf.yaml (root permission required on Linux)
Start the service ./gantt-online -f conf.yaml (root permission required on Linux)

If on Windows, the command ./gantt-online needs to be changed to gantt-online.exe

Daemon Process Running Method

Linux

Recommends Using systemd

Shortcut ( ./gantt-online -f conf.yaml &)

Recommend using the following method



Copy code
#/usr/lib/systemd/system/gantt-online.service 
#sudo systemctl daemon-reload  

[Unit]  
Description=zz plan   


[Service]
Type=simple
# Fill in the absolute path of your running file and configuration below  
ExecStart=/home/gantt/start -f /home/gantt/conf.yaml  
Restart=always
RestartSec=9  
User=root  
Group= root

[Install]  
WantedBy=multi-user.target

Enable the service systemctl enable gantt-online.service
Start the service systemctl start gantt-online.service
Stop the service systemctl stop gantt-online.service
Restart the service systemctl restart gantt-online.service

mac

( ./gantt-online -f conf.yaml &) or use launchctl to manage

windows

Can use nssm for service management

An Excellent Online Gantt Chart Creation Tool

vic — Thu, 14 Mar 2024 04:44:01 +0000

An Excellent Online Gantt Chart Creation Tool

gantt-online

Supports drag and drop
Supports task relationships (start-to-start, start-to-finish, finish-to-finish)
Supports task view and resource view
Online sharing
Supports generating SVG vector images and PNG images
Supports custom color labels and time settings
Supports adding task details
Supports guest mode
.... Welcome to try it out

Effortlessly Manage Complex Projects with Our Intuitive Gantt Chart Tool

vic — Fri, 09 Jun 2023 06:43:29 +0000

https://www.gantt-online.com/

Gantt Chart | Project Management Tool
Clear at a glance: personnel, tasks, schedule, work hours, cycle, dependencies
Easy management for projects of any size and complexity.

You can create a Gantt chart without logging in, and once you save it, a unique address will be generated. You can share this address with your team or remember it to continue editing next time without logging in.

A simple image edge detection method

vic — Tue, 15 Jun 2021 09:52:30 +0000

A simple image edge detection method

General steps:

Zoom pictures to improve efficiency
Picture grayscale
Calculate edges based on brightness

The third step is the most critical. There are many ways to directly contrast the adjacent brightness.

Instructions:

Install

composer require lizhichao/one-img

Example


$img_path = '1.jpg';
$img = new \OneImg\Border();
$img->setImg($img_path)
    ->scale(300, 300)
    ->outline()
    ->save(); //Output to browser

effect

Code warehouse

https://github.com/lizhichao/doImg

My other warehouse welcome star

A minimalist high-performance php framework ，can respond to requests within 1ms

vic — Thu, 20 May 2021 07:33:48 +0000

One - A minimalist high-performance php framework that supports the [swoole | php-fpm] environment

Fast - can respond to requests within 1ms even under php-fpm
Simple - let you focus on what you do with one instead of how to use one
Flexible - each component is loosely coupled, can be flexibly matched and used, and the method of use is consistent
- Native sql can be used with model relation with, relation can cross database types
- session can be used under http, websocket or even tcp, udp and cli
- ...
High efficiency - operational performance, development efficiency, and easy maintenance.
Lightweight - no other dependencies, the total code amount of all components from routing and orm does not exceed 500k. If there is no complicated calling relationship in secondary development, you can quickly grasp the design principle

hello world

install

composer create-project lizhichao/one-app app
cd app
php App/swoole.php 

# stop ： `php App/swoole.php -o stop`  
# reload ： `php App/swoole.php -o reload`  
# Daemon start ： `php App/swoole.php -o start`  

curl http://127.0.0.1:8081/

performance

reference：

Main components

Router
- Support greedy matching and priority
- Support ws/tcp/http……any protocol
- Good performance, adding tens of thousands of routes will not reduce the parsing performance
- Routing grouping, middleware...all there should be
ORM
- Support database: mysql, clickHouse,
- Relation processing: one-to-one, one-to-many, many-to-one, polymorphism... There are various relations, which can be related across database types
- Cache: Automatically refresh data, support configuration of various cache granularities
- Event: All operations can be captured, including you use native SQL to operate the database
- Database connection: synchronous, asynchronous, blocking, disconnection and reconnection are all supported
- sql template: automatically generate template id, you can understand what types of sql the project has, and the proportion of the number of calls, and provide data support for later data optimization.
- Statement reuse: Provide SQL execution performance
rpc
- Can automatically generate remote method mapping, support ide prompt
- Direct call mapping method == call remote method, support chain call
- Support rpc middleware, authentication, encryption and decryption, caching...
Log
- Complete information: record the complete file name + line number to quickly locate the code location
- requestId: You can easily view the entire request log information and service relationship

Router


Router::get('/', \App\Controllers\IndexController::class . '@index');

// router with params
Router::get('/user/{id}', \App\Controllers\IndexController::class . '@user');

// router with group
Router::group(['namespace'=>'App\\Test\\WebSocket'],function (){
    // websocket router
    Router::set('ws','/a','TestController@abc'); 
    Router::set('ws','/b','TestController@bbb'); 
});

// Middleware
Router::group([
    'middle' => [
        \App\Test\MixPro\TestMiddle::class . '@checkSession'
    ]
], function () {
    Router::get('/mix/ws', HttpController::class . '@ws');
    Router::get('/user/{id}', \App\Controllers\IndexController::class . '@user');
    Router::post('/mix/http/send', HttpController::class . '@httpSend');
});

orm

Define the model

namespace App\Model;

use One\Database\Mysql\Model;

// There is no need to specify the primary key in the model, the framework will cache the database structure
// Automatically match the primary key, automatically filter the fields in the non-table structure
class User extends Model
{
    // Define the table name corresponding to the model
    CONST TABLE = 'users';

    // define relationship
    public function articles()
    {
        return $this->hasMany('id',Article::class,'user_id');
    }

    // define event
    // Whether to enable automatic caching
    // ……
}

Use model

The database connection is a single column under fpm,
All database operations are automatically switched to connection pool in swoole mode

// Query a record
$user = User::find(1);

// Related query
$user_list = User::whereIn('id',[1,2,3])->with('articles')->findAll()->toArray();

// update
$r = $user->update(['name' => 'aaa']);
// or
$r = user::where('id',1)->update(['name' => 'aaa']);
// $r To influence the number of records

Cache

// Set cache without expiration time
Cache::set('ccc',1);

// Set the cache to expire in 1 minute
Cache::set('ccc',1,60);


Cache::get('ccc');

// or cache ccc expires 10s under tag1
Cache::get('ccc',function (){
    return 'info';
},10,['tag1']);

// Refresh all caches under tag1
Cache::flush('tag1');

Code warehouse

https://github.com/lizhichao/one

A simple log collector listening log file written to clickhouse

vic — Wed, 19 May 2021 03:16:06 +0000

A simple log collector, Monitor files through tail -F command, write to the Clickhouse. Very low occupancy of resources, It can process more than 100 thousand log information per second

install

composer require lizhichao/log2ck

example

tail -F apapche/access.log | php apache_log.php -h tcp://127.0.0.1:9000 -u default -p 123456 -d logs -t apache_log

options :

-h clickhouse host port
-u clickhouse user name
-p clickhouse password
-d clickhouse database name
-t clickhouse table name

principle

Use clickhouse to support streaming writing

Code factory library used

https://github.com/lizhichao/log2ck

https://github.com/lizhichao/one-ck

A simple parameter validator

vic — Wed, 19 May 2021 02:22:44 +0000

A simple parameter validator

$_POST  = [
    'email' => 'xxxx',
    'age'   => 2
];
$vt     = new Validator();
$result = $vt->validate($_POST, [
    'name'  => 'required|min_len:5|max_len:10', // required 5<= strlen(name) <=10
    'email' => 'required|email', // required email
    'age'   => 'uint|min:18|max:200'  // options Positive integer 18<= age <=200
])->isOk();

if ($result === false) {
    print_r($vt->getErrs());
}


//Array
//(
//    [0] => name can not be empty
//    [1] => email incorrect format
//    [2] => age not less than 18
//)

Built-in rules

required
numeric numbers include floating point numbers
min cannot be less than
max cannot be greater than
min_len cannot be shorter than
max_len cannot be longer than
int integer
uint positive integer
email mailbox format
ip ip format
stop prevents bubbling (when a rule is not met, the remaining rules are not verified)

If not enough? Customizable rules

$vt->addRule('between', [
    'msg' => ':attribute can only be between :arg1-:arg2',
    'fn'  => function ($value, $arg1, $arg2) {
        return $value >= $arg1 && $value <= $arg2;
    }
]);

$vt->validate(['a' => 10], [
    'a' => 'required|between:3,10'
]);

// Check whether a value exists in the database
$vt->addRule('exist', [
    'msg' => 'the :attribute already exists',
    'fn'  => function ($value, $table, $filed) {
        return Model::from($table)->where($filed,$value)->find() !== null;
    }
]);

$vt->validate(['email' => 'sss@ss.com'], [
    'email' => 'required|exist:users,email'
]);

Can be used here
https://github.com/lizhichao/one