@mention people in a textarea
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Latest commit fb26d4d Sep 6, 2017 @jfschwarz jfschwarz committed on GitHub Update README.md

README.md

React Mentions

Build Status Dependency Status npm version

A React component that let's you mention people in a textarea like you are used to on Facebook or Twitter.

Used in production at:

Please let us know if you are using react-mentions, we'd love to add you to this list.

Getting started

Install the react-mentions package via npm:

npm install react-mentions --save

Require the react-mentions package, which exports the two relevant React components for rendering the mentions textarea:

import { MentionsInput, Mention } from 'react-mentions'

MentionsInput is the main component rendering the textarea control. It takes one or multiple Mention components as its children. Each Mention component represents a data source for a specific class of mentionable objects, such as users, template variables, issues, etc.

Example:

<MentionsInput value={this.state.value} onChange={this.handleChange}>
    <Mention trigger="@"
        data={this.props.users}
        renderSuggestion={this.renderUserSuggestion} />
    <Mention trigger="#"
        data={this.requestTag}
        renderSuggestion={this.renderTagSuggestion} />
</MentionsInput>

You can find more examples here: gh-pages/views/examples

Configuration

The MentionsInput supports the following props for configuring the widget:

Prop name Type Default value Description
value string '' The value containing markup for mentions
onChange function (event, newValue, newPlainTextValue, mentions) empty function A callback that is invoked when the user changes the value in the mentions input
markup string '@[__display__](__id__)' A template string for the markup to use for mentions
singleLine boolean false Renders a single line text input instead of a textarea, if set to true
displayTransform function (id, display, type) returns display Accepts a function for customizing the string that is displayed for a mention
onBlur function (event, clickedSuggestion) empty function Passes true as second argument if the blur was caused by a mousedown on a suggestion
allowSpaceInQuery boolean false Keep suggestions open even if the user separates keywords with spaces.

Each data source is configured using a Mention component, which has the following props:

Prop name Type Default value Description
trigger regexp or string '@' Defines the char sequence upon which to trigger querying the data source
type string null Identifier for the data source, when using multiple data sources (optional)
data array or function (search, callback) null An array of the mentionable data entries (objects with id & display keys, or a filtering function that returns an array based on a query parameter
renderSuggestion function (entry, search, highlightedDisplay, index) null Allows customizing how mention suggestions are rendered (optional)
onAdd function (id, display) empty function Callback invoked when a suggestion has been added (optional)
appendSpaceOnAdd boolean false Append a space when a suggestion has been added (optional)

If a function is passed as the data prop, that function will be called with the current search query as first, and a callback function as second argument. The callback can be used to provide results asynchronously, e.g., after fetch requests. (It can even be called multiple times to update the list of suggestions.)

Styling

react-mentions supports css, css modules, and inline styles. It is shipped with only some essential inline style definitions and without any css. Some example inline styles demonstrating how to customize the appearance of the MentionsInput can be found at gh-pages/views/examples/defaultStyle.js.

If you want to use css, simply assign a className prop to MentionsInput. All DOM nodes rendered by the component will then receive class name attributes that are derived from the base class name you provided.

If you want to avoid global class names and use css modules instead, you can provide the automatically generated class names as classNames to the MentionsInput. See gh-pages/views/examples/CssModules.js for an example of using react-mentions with css modules.

You can also assign className and style props to the Mention elements to define how to highlight the mentioned words.

Contributing

Spawn a development server with an example page and module hot loading all set up:

npm start

Update the examples page on Github Pages:

npm run pages-publish