{"id":1276,"date":"2023-08-03T05:00:00","date_gmt":"2023-08-03T12:00:00","guid":{"rendered":"https:\/\/www.angulartraining.com\/daily-newsletter\/?p=1276"},"modified":"2023-08-02T15:31:23","modified_gmt":"2023-08-02T22:31:23","slug":"how-to-create-custom-form-controls-with-angular","status":"publish","type":"post","link":"https:\/\/www.angulartraining.com\/daily-newsletter\/how-to-create-custom-form-controls-with-angular\/","title":{"rendered":"How to create custom form controls with Angular?"},"content":{"rendered":"\n

When working with lots of forms, you’ll likely use similar controls repeatedly: A country selection dropdown, a state selection dropdown, a date-range picker with specific constraints, etc. <\/p>\n\n\n\n

Instead of duplicating our code, which is never a good idea, Angular allows us to create custom form controls that integrate with Angular’s form validation<\/a> mechanism.<\/p>\n\n\n\n

This feature requires our custom control component to implement an interface called ControlValueAccessor<\/a><\/code> that has the following methods:<\/p>\n\n\n

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\"\"<\/figure>\n<\/div>\n\n\n

<\/p>\n\n\n\n

I have a detailed tutorial<\/a> and code example<\/a> if you want to dive deeper into that topic. <\/p>\n\n\n\n

It’s also worth noting that you don’t have to start from scratch when implementing a control value accessor. Angular has a DefaultValueAccessor<\/code> directive<\/a> (the one used by FormControl<\/code>, NgModel<\/code>, etc., in Angular forms) that can be invoked with the selector ngDefaultControl<\/code>, and there are a few more options available<\/a>, such as the SelectControlValueAccessor<\/a><\/code>.<\/p>\n","protected":false},"excerpt":{"rendered":"

When working with lots of forms, you’ll likely use similar controls repeatedly: A country selection dropdown, a state selection dropdown, a date-range picker with specific constraints, etc. Instead of duplicating our code, which is never a good idea, Angular allows us to create custom form controls that integrate with Angular’s form validation mechanism. This feature […]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[4,8,22],"tags":[],"class_list":["post-1276","post","type-post","status-publish","format-standard","hentry","category-angular","category-components","category-forms"],"aioseo_notices":[],"_links":{"self":[{"href":"https:\/\/www.angulartraining.com\/daily-newsletter\/wp-json\/wp\/v2\/posts\/1276","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.angulartraining.com\/daily-newsletter\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.angulartraining.com\/daily-newsletter\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.angulartraining.com\/daily-newsletter\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.angulartraining.com\/daily-newsletter\/wp-json\/wp\/v2\/comments?post=1276"}],"version-history":[{"count":2,"href":"https:\/\/www.angulartraining.com\/daily-newsletter\/wp-json\/wp\/v2\/posts\/1276\/revisions"}],"predecessor-version":[{"id":1279,"href":"https:\/\/www.angulartraining.com\/daily-newsletter\/wp-json\/wp\/v2\/posts\/1276\/revisions\/1279"}],"wp:attachment":[{"href":"https:\/\/www.angulartraining.com\/daily-newsletter\/wp-json\/wp\/v2\/media?parent=1276"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.angulartraining.com\/daily-newsletter\/wp-json\/wp\/v2\/categories?post=1276"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.angulartraining.com\/daily-newsletter\/wp-json\/wp\/v2\/tags?post=1276"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}