Netlify Functions - Using path as input to function

Timbersaw · January 30, 2022, 2:37pm

Hi team,

Newbie here. Not much experience with JS/Netlify/Web development. I’m creating a netlify function and would like to use part of the url as in. Example:

www.mysite.com/.netlify/functions/myfunction/employee_code

Is it possible to have such a function where ‘employee_code’ is take as a parameter/argument for the ‘myfunction’ function? I know Query String Parameters is one way, but wondering if the path can be used too? Any example would be greatly appreciated.

Thanks in advance!

hrishikesh · January 30, 2022, 2:45pm

There’s no built-in way. You’d have to setup a middleware using Express.js or something similar. If that’s not acceptable, query parameters is the only way to go.

Timbersaw · January 30, 2022, 2:53pm

Got it. Thanks! Any good guides on how to use query parameters?

hrishikesh · January 30, 2022, 3:00pm

No guide as such, but it’s fairly simple. Here’s an old repo of mine in which I had used it:

github.com

Hrishikesh-K/ThreadTalk.JS/blob/main/src/functions/getComments.js#L32


      
          // Delete the user before proceeding
          return fetch(identity.url + '/admin/users/' + user.sub, {
            method: 'DELETE',
            headers: {
              Authorization: 'Bearer ' + identity.token
            }
          })
            .then(() => {
              
              // Set title from query string
              const title = event.queryStringParameters.title
              
              // Check setup before proceeding
              return setupComments(title)
                .then(() => {
              
                  // Get the documents from the index
                  return commentsDB.query(faunaDB.query.Paginate(faunaDB.query.Match(faunaDB.query.Index(title + 'Index'))))
                    .then(indexedComments => {
                  
                      // Since we get an array, we check for its length to determine if we actually received comments

event.queryStringParameters is an object like:

{
  param1: 'foo',
  param2: 'bar'
}

You can choose to use object destructuring if needed