/
flash.js
59 lines (53 loc) · 1.56 KB
/
flash.js
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// Express - Flash - Copyright TJ Holowaychuk <tj@vision-media.ca> (MIT Licensed)
exports.Flash = Plugin.extend({
extend: {
/**
* Initialize extensions.
*/
init: function(){
Request.include({
/**
* Get / set flash _key_ and _val_.
*
* When a flash _key_ and _val_ are present,
* it will persist in the session until outputted.
* The _val_ pushed is returned.
*
* When no arguments are given, all flashes are
* returned keyed by their type.
*
* Example:
*
* this.flash('info', 'email sent')
* this.flash('info', 'email received')
* this.flash('info')
* // => ['email sent', 'email received']
*
* this.flash('info')
* // => null
*
* @param {string} key
* @param {string} val
* @return {mixed}
* @api public
*/
flash: function(key, val) {
if (!this.session.flash) this.session.flash = {}
if (!key) {
var flashes = this.session.flash
this.session.flash = {}
return flashes
}
if (!(key in this.session.flash)) this.session.flash[key] = []
if (val)
return this.session.flash[key].push(val), val
else if (key) {
var vals = this.session.flash[key]
delete this.session.flash[key]
if (vals.length) return vals
}
}
})
}
}
})