canopy-forms-select

name	canopy-forms-select
description	Best practices for the Canopy Select component. Trigger when adding dropdown form fields, single-selection lists, or option pickers in an Angular project using Canopy.
license	MIT
metadata	{"source":"https://github.com/Legal-and-General/canopy/tree/master/projects/canopy/src/lib/forms/select/docs/guide.mdx"}

Canopy Select — Best Practices

This skill provides usage guidance, dos and don'ts, and input reference for the Canopy lg-select-field component from @legal-and-general/canopy.

Apply this skill whenever you use LgSelectFieldComponent or LgSelectDirective.

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Import

import { LgSelectFieldComponent, LgSelectDirective } from '@legal-and-general/canopy';

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Basic Usage

Use Angular reactive forms. The lgSelect directive goes on the <select> element inside lg-select-field.

<lg-select-field formControlName="colour">
  Colour
  <lg-hint>Choose your preferred colour</lg-hint>
  <select lgSelect>
    <option value="">Select</option>
    <option value="red">Red</option>
    <option value="blue">Blue</option>
    <option value="green">Green</option>
  </select>
</lg-select-field>

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LgSelectDirective Inputs

Input	Type	Default	Description
id	string	auto-generated	HTML id attribute.
name	string	auto-generated	HTML name attribute.

LgSelectFieldComponent Inputs

Input	Type	Default	Description
id	string	auto-generated	Propagates to the select id and label for.
block	boolean	false	Makes the select full-width on small screens.

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Accessibility

• Always provide label text inside lg-select-field as projected content — the component renders the associated <label> element automatically.
• Use lg-hint to provide extra context where needed.
• Provide a meaningful default option or empty value ("Select" or "Choose an option").
• Ensure option text is clear and descriptive.
• Keyboard users must be able to open the select with Space/Enter and navigate options with arrow keys.
• List options in a predictable order (alphabetical, chronological, most frequently used).

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Dos and Don'ts

Do

1. Do use a select when the preset option list is long (more than five options) and space is limited.
2. Do list options in a predictable format: alphabetical, chronological, or most frequently used.

Don't

1. Don't use a select when typing may be faster, such as for date of birth or postcode — use text input instead.
2. Don't use a select to present a single selection — use a checkbox instead.
3. Don't use a select for a very large number of options — consider an autocomplete approach instead.
4. Don't capitalise option text — use sentence case for easy reading.