Express.js middleware to set and retrieve session flash messages
## Requirements
For the `express-flasher` module to work, you must first have the `express-session` module enabled in your express app. Please refer to [the express-session documentation](https://www.npmjs.com/package/express-session) on how to set it up.
## Installation
Installating this module is super easy with NPM:
`npm install --save express-flasher`
## Usage
After the module is installed, you can set up the express-flasher by registering the middleware (both middlewares are important!):
```javascript
const flasher = require('express-flasher');
...
app.use(flasher.flash()); // enables the req.flash() method for setting flash messages
app.use(flasher.flashRead()); // reads flash messages and adds it to the view
```
Now you can set messages in your routes:
```javascript
exports.index = function(req, res) {
flash('info', 'This is a flash!');
res.render('index.twig');
};
```
And finally, you can read the flash messages in your views:
```twig
...
{% if flash %}
<divclass="flash-message {{ flash.type }}">
<p>{{ flash.msg }}</p>
</div>
{% endif %}
...
```
## License
This project is licensed under the BSD 2-Clause license.
