選択できるのは25トピックまでです。 トピックは、先頭が英数字で、英数字とダッシュ('-')を使用した35文字以内のものにしてください。
 
 
 
 
Kevin C. Coram cd7644a767
Refactor createForm() to provide composible factory methods
1年前
.vscode initial commit 1年前
apps Document 'own form controls' application 1年前
libs Refactor createForm() to provide composible factory methods 1年前
tools initial commit 1年前
.editorconfig initial commit 1年前
.gitignore initial commit 1年前
.prettierignore initial commit 1年前
.prettierrc Configure prettier to use trailing commas 1年前
LICENSE Add MIT License file 1年前
README.md Add reference to blog article describing the 'own form controls' pattern 1年前
README_NX.md Rename generated README file 1年前
angular.json Remove e2e tests 1年前
jest.config.js Use Nrwl jest resolver plugin 1年前
nx.json Remove e2e tests 1年前
package-lock.json Additional Jest configuration and dependencies 1年前
package.json Additional Jest configuration and dependencies 1年前
tsconfig.json Refactor rename lib/contact-model -> lib/contact 1年前
tslint.json nx g @nrwl/angular:app parent-form 1年前

README.md

Nested Forms - An exploration of alternatives

The official Angular documentation discussing Reactive Forms shows how one can use groups and arrays to organize a form, and to dynamically add to it. The drawback of the example on that page is that everything is in a single component.

Once a component starts to grow in size and complexity, it becomes desirable to decompose it into multiple smaller components. At this point, there are a number of ways to break up the form into a set of nested form elements.

Project Purpose

This project explores several approaches to implementing nested forms/components. The project is structured using the Nrwl Nx monorepository framework, with shared models and services in a library, and separate applications to explore each approach.

Each application implements a simple contact management form, capturing simple demographics information and a list of postal addresses.

Base Line - The Single component

The Base Line application implements the contact manangement form in a single angular component, directly using the example techniques from the Reactive Forms documentation.

Components Creating Own Form Controls

Searching the Internet for examples of nested forms in Angular shows one popular approach is to have each sub-component be responsible for creating its own form controls. The parent form is passed in as an @Input, and the component adds its components to the form using the addControl(name, control) method. See, for example, Nested Reactive Forms in Angular2.

The Parent Form application explores this approach.

Parent Component Creates Form and Passes Form Controls Into Child Components

Another approach is to allow the outermost, or parent, component create the full Reactive Form. Each child component is given the FormGroup containing the portion of the form that it is responsible for rendering.

The Global Form application explores this approach.