Add A Status Field For Shifts In Frontend And Backend

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Introduction

Managing shift states in a frontend and backend application can be a complex task, especially when multiple booleans are used to determine the state of a shift. In this article, we will explore how to simplify shift state management by introducing a single status field with three possible values: not_started, started, and finished. This adjustment will be applied to both the frontend and backend, ensuring a seamless user experience.

The Current State of Shift Management

Currently, the shift entity in the frontend does not have a dedicated status field. Instead, multiple booleans are used to determine the state of a shift. This approach can lead to confusion and make it difficult to manage shift states. For instance, a shift can be in one of the following states:

  • Not started
  • Started
  • Finished

To simplify state management, a single field should be introduced with the following possible values:

  • 0 -> not_started
  • 1 -> started
  • 2 -> finished

Frontend Changes

Modifying the Angular Frontend

To simplify shift state management, the Angular frontend should be modified to use a single status field instead of multiple booleans. This can be achieved by introducing a new status field in the shift component.

// shift.component.ts
import { Component, OnInit } from '@angular/core';

@Component({
  selector: 'app-shift',
  templateUrl: './shift.component.html',
  styleUrls: ['./shift.component.css']
})
export class ShiftComponent implements OnInit {
  shift: any = {};
  statuses = [
    { value: 0, label: 'Not Started' },
    { value: 1, label: 'Started' },
    { value: 2, label: 'Finished' }
  ];

  constructor() { }

  ngOnInit(): void {
  }

  // Update the shift status when the start_date field is filled
  updateStatusStarted(shift: any): void {
    shift.state = 1;
  }

  // Update the shift status when the end_date field is filled
  updateStatusFinished(shift: any): void {
    shift.state = 2;
  }
}

Ensuring Correct Handling of Shift Statuses

To ensure that the shift component correctly handles the three statuses, the following logic should be implemented:

  • When the start_date field is filled, the status should change to started.
  • When the end_date field is filled, the status should change to finished.
// shift.component.html
<div>
  <label>Start Date:</label>
  <input type="date" [(ngModel)]="shift.start_date" (ngModelChange)="updateStatusStarted(shift)">
</div>

<div>
  <label>End Date:</label>
  <input type="date" [(ngModel)]="shift.end_date" (ngModelChange)="updateStatusFinished(shift)">
</div>

<div>
  <label>Status:</label>
  <select [(ngModel)]="shift.state">
    <option *ngFor="let status of statuses" [value]="status.value">{{ status.label }}</option>
  </select>
</div>

Backend Changes

Adding a New State Field to the Shifts Table

To simplify shift state management, a new state field should be added to the shifts table using the ENUM type.

-- Create a new ENUM type for shift states
CREATE TYPE STATE AS ENUM ('not_started', 'started', 'finished');

-- Add a new state field to the shifts table
ALTER TABLE shifts
ADD COLUMN state STATE NOT NULL DEFAULT 'not_started';

Implementing Logic to Automatically Update the Shift Status

To automatically update the shift status when the start_date or end_date field is filled, the following logic should be implemented using Laravel's built-in features, similar to a trigger.

// Update the shift status when the start_date field is filled
static::updating(function ($shift) {
    if ($shift->start_date && !$shift->getOriginal('clock_on_time')) {
        $shift->state = 1; // started
    }
    if ($shift->end_date && !$shift->getOriginal('clock_off_time')) {
        $shift->state = 2; // finished
    }
});

Schema Update

To update the schema, the following code should be used:

// Update the shifts table schema
Schema::table('shifts', function (Blueprint $table) {
    $table->tinyInteger('state')->default(0)->comment('0 = not_started, 1 = started, 2 = finished');
});

Conclusion

Introduction

In our previous article, we explored how to simplify shift state management by introducing a single status field with three possible values: not_started, started, and finished. This adjustment was applied to both the frontend and backend, ensuring a seamless user experience. In this article, we will answer some frequently asked questions (FAQs) related to simplifying shift state management.

Q&A

Q: Why do we need to simplify shift state management?

A: Simplifying shift state management can help reduce the complexity of managing shift states. By using a single status field, we can easily determine the state of a shift and make it easier to manage.

Q: What are the benefits of using a single status field?

A: Using a single status field can provide several benefits, including:

  • Simplified state management
  • Reduced complexity
  • Improved user experience

Q: How do we implement a single status field in the frontend?

A: To implement a single status field in the frontend, you can use a library like Angular. You can create a new component and add a select dropdown to display the possible statuses.

Q: How do we implement a single status field in the backend?

A: To implement a single status field in the backend, you can use a database management system like MySQL. You can create a new table and add a column to store the status of a shift.

Q: What are the possible values for the status field?

A: The possible values for the status field are:

  • 0 -> not_started
  • 1 -> started
  • 2 -> finished

Q: How do we update the status field automatically?

A: To update the status field automatically, you can use a trigger in the backend. You can create a trigger that updates the status field when the start_date or end_date field is filled.

Q: What is the schema update for the shifts table?

A: The schema update for the shifts table is as follows:

// Update the shifts table schema
Schema::table('shifts', function (Blueprint $table) {
    $table->tinyInteger('state')->default(0)->comment('0 = not_started, 1 = started, 2 = finished');
});

Q: How do we handle multiple shifts with the same status?

A: To handle multiple shifts with the same status, you can use a library like Laravel. You can create a new model and add a method to retrieve shifts with a specific status.

Q: What are the best practices for simplifying shift state management?

A: Some best practices for simplifying shift state management include:

  • Using a single status field
  • Implementing a trigger to update the status field automatically
  • Using a library like Laravel to handle multiple shifts with the same status

Conclusion

In this article, we answered some frequently asked questions (FAQs) related to simplifying shift state management. By using a single status field, we can simplify state management and reduce the complexity of shift state management. We hope this article has provided you with a better understanding of how to simplify shift state management.