Are you ready to simplify the way you manage forms in your Angular applications? Welcome to the world of NG Dynamic Forms, a powerful library designed to automate the creation of dynamic forms seamlessly. In this guide, we will walk you through the essential steps to set up NG Dynamic Forms and utilize its features effectively.

Table of Contents

• Getting Started
• Running the Sample
• Basic Usage
• UI Modules
• Form Groups
• Form Arrays
• Custom Templates
• FAQ
• Troubleshooting

Getting Started

To start using NG Dynamic Forms, you need to install the core package:

npm install @ng-dynamic-forms/core -S

Next, install a UI package of your choice:

npm install @ng-dynamic-forms/ui-material -S

Running the Sample

To get a glimpse of NG Dynamic Forms in action, follow these steps:

1. Clone the Git repository:

git clone https://github.com/udos86/ng-dynamic-forms.git

2. Navigate to the project directory:

cd ng-dynamic-forms

3. Install dependencies:

npm install

4. Build the library:

npm run build:lib

5. Run the application:

ng serve

Basic Usage

To utilize NG Dynamic Forms, follow these foundational steps:

1. Import the UI module:

import { DynamicFormsMaterialUIModule } from '@ng-dynamic-forms/ui-material';

2. Define your form model:

import { DynamicFormModel, DynamicCheckboxModel, DynamicInputModel } from '@ng-dynamic-forms/core';
export const MY_FORM_MODEL: DynamicFormModel = [
    new DynamicInputModel({ id: 'sampleInput', label: 'Sample Input', maxLength: 42, placeholder: 'Sample input' }),
    new DynamicCheckboxModel({ id: 'sampleCheckbox', label: 'I do agree' }),
];

3. Create a FormGroup via DynamicFormService:

import { DynamicFormService } from '@ng-dynamic-forms/core';

export class MyDynamicFormComponent {
    formModel: DynamicFormModel = MY_FORM_MODEL;
    formGroup = this.formService.createFormGroup(this.formModel);
    constructor(private formService: DynamicFormService) {}
}

4. Add a DynamicFormComponent to your template:

<form [formGroup]="formGroup">
    <dynamic-material-form [group]="formGroup" [model]="formModel"></dynamic-material-form>
</form>

UI Modules

NG Dynamic Forms supports a variety of UI libraries. You can easily integrate your preferred library by installing the relevant UI package. Below are some of the supported UI libraries:

• Material
• ngx-bootstrap
• NG Bootstrap
• Foundation
• Ionic
• PrimeNG

Form Groups

NG Dynamic Forms allows you to group form controls logically. This makes it easier to manage complex forms. You can create a nested structure like this:

export const MY_FORM_MODEL: DynamicFormModel = [
    new DynamicFormGroupModel({
        id: 'fullName',
        legend: 'Name',
        group: [
            new DynamicInputModel({ id: 'firstName', label: 'First Name' }),
            new DynamicInputModel({ id: 'lastName', label: 'Last Name' })
        ]
    }),
];

Form Arrays

If users need to add multiple entries such as addresses or products, NG Dynamic Forms provides support for Form Arrays. You can create a structure like this:

export const MY_FORM_MODEL: DynamicFormModel = [
    new DynamicFormArrayModel({
        id: 'myFormArray',
        groupFactory: () => [
            new DynamicInputModel({ id: 'myInput', label: 'My Input' }),
        ]
    })
];

Custom Templates

To enhance your forms, you can create custom templates for various form controls. Use ng-template to specify a template inside your form control:

<dynamic-material-form [group]="formGroup" [model]="formModel">
    <ng-template modelId="myInput">
        <p>Some custom markup for input</p>
    </ng-template>
</dynamic-material-form>

FAQ

Here are answers to some frequently asked questions:

• Why should I use NG Dynamic Forms?
  To streamline form management and prevent errors related to template synchronization.
• When not to use NG Dynamic Forms?
  For very simple forms or when highly customized UI specifications are required.

Troubleshooting

If you encounter issues while using NG Dynamic Forms, here are some troubleshooting tips:

• Ensure that all dependencies are correctly installed.
• Verify the configuration of your form model and ensure all IDs are unique.
• Check for version compatibility between NG Dynamic Forms and your UI library.
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With NG Dynamic Forms, form management becomes a breeze. Feel free to explore the offerings and enhance your Angular applications with our robust solutions!