Can I pass custom parameters in the addRequest so that I can use in the router-hander callback function?

[ParadiseWitch]

Can I pass custom parameters in the addRequest so that I can use in the router-hander callback function?

maybe like this:

const router = createPlaywrightRouter()
router.addHandler('detail', async ({ request, page, log, crawler }, param) => {
  // get param...
  log.info(param) // 'my custom param'
})

const crawler = new PlaywrightCrawler({ requestHandler: router  })
await crawler.addRequests([{
  url: `http://www.xxx.com`,
  label: 'detail',
  param: 'my custom param'
}])
await crawler.run()

[metalwarrior665]

Request.userData https://crawlee.dev/api/core/class/Request#userData

[ParadiseWitch]

Thx!!!

[djodjo02130]

@metalwarrior665 Can we pass function in userData ?

[LeMoussel]

You can pass string & call function from this string. Something like this

//    functions.js
var myFunc= function(){
   console.log("function 'myFunc' called")
}
module.exports={
    //  name_exported : internal_name
    myFunc: myFunc
}

//    index.js
import methods from './functions.js'   

const myFunctionString = "myFunc" // function name in userData
methods[myFunctionString]()

[metalwarrior665]

Theoretically yes but requests are also persisted and at that point if would not get serialized so it would not work after stopping the program and then resuming from persisted storage.

Actually it doesn't work even in memory, non serializable stuff is stripped away completely