Node-RED:Рецепты/Как работать с куки - История изменений

EducationBot в 14:25, 14 мая 2023

2023-05-14T14:25:18Z

← Предыдущая версия		Версия от 18:25, 14 мая 2023
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	[[File:nodered_recipe_work-with-cookies.png\|center]]		[[File:nodered_recipe_work-with-cookies.png\|center]]

	<syntaxhighlight lang="javascript~~" enclose="div~~">		<syntaxhighlight lang="javascript">
	[{"id":"c362b989.954ae8","type":"http in","z":"3045204d.cfbae","name":"","url":"/hello-cookie","method":"get","swaggerDoc":"","x":130,"y":1020,"wires":[["21ddf71f.d00518"]]},{"id":"21ddf71f.d00518","type":"function","z":"3045204d.cfbae","name":"Format cookies","func":"msg.payload = JSON.stringify(msg.req.cookies,null,4);\nreturn msg;","outputs":1,"noerr":0,"x":340,"y":1020,"wires":[["f3aa98c1.befc18"]]},{"id":"f3aa98c1.befc18","type":"template","z":"3045204d.cfbae","name":"page","field":"payload","fieldType":"msg","format":"handlebars","syntax":"mustache","template":"<html>\n <head></head>\n <body>\n <h1>Cookies</h1>\n <p></p><a href=\"hello-cookie/add\">Add a cookie</a> • <a href=\"hello-cookie/clear\">Clear cookies</a></p>\n <pre>{{ payload }}</pre>\n </body>\n</html>","x":530,"y":1020,"wires":[["f52e2880.180968"]]},{"id":"f52e2880.180968","type":"http response","z":"3045204d.cfbae","name":"","x":750,"y":1020,"wires":[]},{"id":"9a2a9a4.0fc0768","type":"change","z":"3045204d.cfbae","name":"Redirect to /hello-cookie","rules":[{"t":"set","p":"statusCode","pt":"msg","to":"302","tot":"num"},{"t":"set","p":"headers","pt":"msg","to":"{}","tot":"json"},{"t":"set","p":"headers.location","pt":"msg","to":"/hello-cookie","tot":"str"}],"action":"","property":"","from":"","to":"","reg":false,"x":550,"y":1080,"wires":[["f52e2880.180968"]]},{"id":"afefb90.53dcf48","type":"function","z":"3045204d.cfbae","name":"Add a cookie","func":"msg.cookies = { };\nmsg.cookies[\"demo-\"+(Math.floor(Math.random()*1000))] = Date.now();\nreturn msg;","outputs":1,"noerr":0,"x":330,"y":1060,"wires":[["9a2a9a4.0fc0768"]]},{"id":"d5205a2c.db9018","type":"function","z":"3045204d.cfbae","name":"Clear cookies","func":"// Find demo cookies and clear them\nvar cookieNames = Object.keys(msg.req.cookies).filter(function(cookieName) { return /^demo-/.test(cookieName);});\nmsg.cookies = {};\n\ncookieNames.forEach(function(cookieName) {\n msg.cookies[cookieName] = null;\n});\n\nreturn msg;","outputs":1,"noerr":0,"x":340,"y":1100,"wires":[["9a2a9a4.0fc0768"]]},{"id":"fda60c66.04975","type":"http in","z":"3045204d.cfbae","name":"","url":"/hello-cookie/add","method":"get","swaggerDoc":"","x":140,"y":1060,"wires":[["afefb90.53dcf48"]]},{"id":"35285a76.1f8636","type":"http in","z":"3045204d.cfbae","name":"","url":"/hello-cookie/clear","method":"get","swaggerDoc":"","x":140,"y":1100,"wires":[["d5205a2c.db9018"]]}]		[{"id":"c362b989.954ae8","type":"http in","z":"3045204d.cfbae","name":"","url":"/hello-cookie","method":"get","swaggerDoc":"","x":130,"y":1020,"wires":[["21ddf71f.d00518"]]},{"id":"21ddf71f.d00518","type":"function","z":"3045204d.cfbae","name":"Format cookies","func":"msg.payload = JSON.stringify(msg.req.cookies,null,4);\nreturn msg;","outputs":1,"noerr":0,"x":340,"y":1020,"wires":[["f3aa98c1.befc18"]]},{"id":"f3aa98c1.befc18","type":"template","z":"3045204d.cfbae","name":"page","field":"payload","fieldType":"msg","format":"handlebars","syntax":"mustache","template":"<html>\n <head></head>\n <body>\n <h1>Cookies</h1>\n <p></p><a href=\"hello-cookie/add\">Add a cookie</a> • <a href=\"hello-cookie/clear\">Clear cookies</a></p>\n <pre>{{ payload }}</pre>\n </body>\n</html>","x":530,"y":1020,"wires":[["f52e2880.180968"]]},{"id":"f52e2880.180968","type":"http response","z":"3045204d.cfbae","name":"","x":750,"y":1020,"wires":[]},{"id":"9a2a9a4.0fc0768","type":"change","z":"3045204d.cfbae","name":"Redirect to /hello-cookie","rules":[{"t":"set","p":"statusCode","pt":"msg","to":"302","tot":"num"},{"t":"set","p":"headers","pt":"msg","to":"{}","tot":"json"},{"t":"set","p":"headers.location","pt":"msg","to":"/hello-cookie","tot":"str"}],"action":"","property":"","from":"","to":"","reg":false,"x":550,"y":1080,"wires":[["f52e2880.180968"]]},{"id":"afefb90.53dcf48","type":"function","z":"3045204d.cfbae","name":"Add a cookie","func":"msg.cookies = { };\nmsg.cookies[\"demo-\"+(Math.floor(Math.random()*1000))] = Date.now();\nreturn msg;","outputs":1,"noerr":0,"x":330,"y":1060,"wires":[["9a2a9a4.0fc0768"]]},{"id":"d5205a2c.db9018","type":"function","z":"3045204d.cfbae","name":"Clear cookies","func":"// Find demo cookies and clear them\nvar cookieNames = Object.keys(msg.req.cookies).filter(function(cookieName) { return /^demo-/.test(cookieName);});\nmsg.cookies = {};\n\ncookieNames.forEach(function(cookieName) {\n msg.cookies[cookieName] = null;\n});\n\nreturn msg;","outputs":1,"noerr":0,"x":340,"y":1100,"wires":[["9a2a9a4.0fc0768"]]},{"id":"fda60c66.04975","type":"http in","z":"3045204d.cfbae","name":"","url":"/hello-cookie/add","method":"get","swaggerDoc":"","x":140,"y":1060,"wires":[["afefb90.53dcf48"]]},{"id":"35285a76.1f8636","type":"http in","z":"3045204d.cfbae","name":"","url":"/hello-cookie/clear","method":"get","swaggerDoc":"","x":140,"y":1100,"wires":[["d5205a2c.db9018"]]}]
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Строка 33:		Строка 33:
	Свойство '''«msg.req.cookies»''' – это объект с парами ''«ключ/значение»'', содержащий куки, которые были созданы в текущем запросе.		Свойство '''«msg.req.cookies»''' – это объект с парами ''«ключ/значение»'', содержащий куки, которые были созданы в текущем запросе.

	<syntaxhighlight lang="javascript~~" enclose="div~~">		<syntaxhighlight lang="javascript">
	var mySessionId = msg.req.cookies['sessionId'];		var mySessionId = msg.req.cookies['sessionId'];
	</syntaxhighlight>		</syntaxhighlight>
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	Пример ниже задает две куки: одну с названием '''«name»''' и значением '''«Nick»''', а вторую – с названием '''«session»''', значением '''«1234»''' и сроком действия 15 минут.		Пример ниже задает две куки: одну с названием '''«name»''' и значением '''«Nick»''', а вторую – с названием '''«session»''', значением '''«1234»''' и сроком действия 15 минут.

	<syntaxhighlight lang="javascript~~" enclose="div~~">		<syntaxhighlight lang="javascript">
	msg.cookies = {		msg.cookies = {
	name: 'nick',		name: 'nick',

Myagkij в 06:12, 7 августа 2022

2022-08-07T06:12:39Z

← Предыдущая версия		Версия от 10:12, 7 августа 2022
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	{{Node-RED/Панель перехода}}		{{Node-RED/Панель перехода}}

	{{Перевод от Сubewriter}}		{{Перевод от Сubewriter}}
	{{Myagkij-редактор}}		{{Myagkij-редактор}}

	~~{{Черновик}}~~

	=Как работать с куки<ref>[https://cookbook.nodered.org/http/work-with-cookies cookbook.nodered.org - Work with cookies]</ref>=		=Как работать с куки<ref>[https://cookbook.nodered.org/http/work-with-cookies cookbook.nodered.org - Work with cookies]</ref>=
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	=См.также=		=См.также=
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	=Внешние ссылки=		=Внешние ссылки=

Myagkij: /* Внешние ссылки */

2022-05-06T14:13:29Z

Внешние ссылки

← Предыдущая версия		Версия от 18:13, 6 мая 2022
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	[[Категория:Рецепты Node-RED]]		[[Категория:Рецепты Node-RED]]
	[[Категория:Рецепты]]		[[Категория:Рецепты]]
			{{Навигационная таблица/Node-RED библиотеки}}
			{{Навигационная таблица/Телепорт}}

Myagkij в 15:21, 29 апреля 2019

2019-04-29T15:21:43Z

Новая страница

{{Node-RED/Панель перехода}}

{{Перевод от Сubewriter}}
{{Myagkij-редактор}}

{{Черновик}}

=Как работать с куки<ref>[https://cookbook.nodered.org/http/work-with-cookies cookbook.nodered.org - Work with cookies]</ref>=

== Проблема ==

Вам нужно создать [[HTTP-поток]], использующий куки.

== Решение ==

У сообщений, отправляемых нодой '''«HTTP in»''', есть свойство '''«msg.req.cookies»''', содержащее список куки, сохраненных в текущем запросе.

Нода '''«HTTP response»''' будет использовать свойство '''«msg.cookies»''' для сохранения и очищения куки.

== Пример ==

[[File:nodered_recipe_work-with-cookies.png|center]]

<syntaxhighlight lang="javascript" enclose="div">
[{"id":"c362b989.954ae8","type":"http in","z":"3045204d.cfbae","name":"","url":"/hello-cookie","method":"get","swaggerDoc":"","x":130,"y":1020,"wires":[["21ddf71f.d00518"]]},{"id":"21ddf71f.d00518","type":"function","z":"3045204d.cfbae","name":"Format cookies","func":"msg.payload = JSON.stringify(msg.req.cookies,null,4);\nreturn msg;","outputs":1,"noerr":0,"x":340,"y":1020,"wires":[["f3aa98c1.befc18"]]},{"id":"f3aa98c1.befc18","type":"template","z":"3045204d.cfbae","name":"page","field":"payload","fieldType":"msg","format":"handlebars","syntax":"mustache","template":"<html>\n <head></head>\n <body>\n <h1>Cookies</h1>\n <p></p><a href=\"hello-cookie/add\">Add a cookie</a> • <a href=\"hello-cookie/clear\">Clear cookies</a></p>\n <pre>{{ payload }}</pre>\n </body>\n</html>","x":530,"y":1020,"wires":[["f52e2880.180968"]]},{"id":"f52e2880.180968","type":"http response","z":"3045204d.cfbae","name":"","x":750,"y":1020,"wires":[]},{"id":"9a2a9a4.0fc0768","type":"change","z":"3045204d.cfbae","name":"Redirect to /hello-cookie","rules":[{"t":"set","p":"statusCode","pt":"msg","to":"302","tot":"num"},{"t":"set","p":"headers","pt":"msg","to":"{}","tot":"json"},{"t":"set","p":"headers.location","pt":"msg","to":"/hello-cookie","tot":"str"}],"action":"","property":"","from":"","to":"","reg":false,"x":550,"y":1080,"wires":[["f52e2880.180968"]]},{"id":"afefb90.53dcf48","type":"function","z":"3045204d.cfbae","name":"Add a cookie","func":"msg.cookies = { };\nmsg.cookies[\"demo-\"+(Math.floor(Math.random()*1000))] = Date.now();\nreturn msg;","outputs":1,"noerr":0,"x":330,"y":1060,"wires":[["9a2a9a4.0fc0768"]]},{"id":"d5205a2c.db9018","type":"function","z":"3045204d.cfbae","name":"Clear cookies","func":"// Find demo cookies and clear them\nvar cookieNames = Object.keys(msg.req.cookies).filter(function(cookieName) { return /^demo-/.test(cookieName);});\nmsg.cookies = {};\n\ncookieNames.forEach(function(cookieName) {\n msg.cookies[cookieName] = null;\n});\n\nreturn msg;","outputs":1,"noerr":0,"x":340,"y":1100,"wires":[["9a2a9a4.0fc0768"]]},{"id":"fda60c66.04975","type":"http in","z":"3045204d.cfbae","name":"","url":"/hello-cookie/add","method":"get","swaggerDoc":"","x":140,"y":1060,"wires":[["afefb90.53dcf48"]]},{"id":"35285a76.1f8636","type":"http in","z":"3045204d.cfbae","name":"","url":"/hello-cookie/clear","method":"get","swaggerDoc":"","x":140,"y":1100,"wires":[["d5205a2c.db9018"]]}]
</syntaxhighlight>

В примере выше созданы три конечные [[HTTP-точки]]:

* '''«/hello-cookie»''' – возвращает страницу со списком всех созданных куки
* '''«/hello-cookie/add»''' – добавляет новую куки и перенаправляет обратно на '''«/hello-cookie»'''
* '''«/hello-cookie/clear»''' – очищает все куки, созданные этим примером, и перенаправляет обратно на '''«/hello-cookie»'''

== Разбор ==

Свойство '''«msg.req.cookies»''' – это объект с парами ''«ключ/значение»'', содержащий куки, которые были созданы в текущем запросе.

<syntaxhighlight lang="javascript" enclose="div">
var mySessionId = msg.req.cookies['sessionId'];
</syntaxhighlight>

Чтобы создать куки в ответе, в свойстве '''«msg.cookies»''' должен храниться похожий объект с парами ''«ключ/значение»''.

Значение может быть либо строкой (чтобы задать значение куки при помощи настроек по умолчанию), либо объектом с опциями.

Пример ниже задает две куки: одну с названием '''«name»''' и значением '''«Nick»''', а вторую – с названием '''«session»''', значением '''«1234»''' и сроком действия 15 минут.

<syntaxhighlight lang="javascript" enclose="div">
msg.cookies = {
name: 'nick',
session: {
value: '1234',
maxAge: 900000
}
}
</syntaxhighlight>

Здесь могут быть следующие настройки:
* '''«domain» (String)''' – доменное имя для куки
* '''«expires» (Date)''' – время действия куки в среднем времени по Гринвичу (GMT). Если не задано или задано '''«0»''', создает сессионную куки
* '''«maxAge» (String)''' – время действия куки относительно текущего времени в миллисекундах
* '''«path» (String)''' – путь для куки. Значение по умолчанию: '''«/»'''
* '''«value» (String)''' – значение для куки

Чтобы удалить куки, выставьте ее значение на '''«null»'''.

=См.также=

=Внешние ссылки=

<references />
[[Категория:Рецепты Node-RED]]
[[Категория:Рецепты]]