为什么发布请求在本地而不是在远程工作？ 搜索的网址不同

Question

I have a page with buttons at a specific url. here they are locally and remotly

local : http://localhost:4000/individual/comp6/57d614b711d268030080eda9/

remote : https://linknon.herokuapp.com/individual/comp6/57d614b711d268030080eda9/ (THIS IS NOT MY REAL LINK)

when I click on the button and have app.post("/individual/"+ comp + "/usefulness", postHandler) in my code, localhost works (the db get updated)

but when I go on line and click on the button I get Failed to load resource: the server responded with a status of 404 (Not Found) it could not get https://linknon.herokuapp.com/individual/comp6/57d614b711d268030080eda9/usefulness .I found that to be weird . Why did it work on local and not remote ?

my app.post("/individual/"+ comp + "/usefulness", postHandler) doesnt include the id after the company name (the company name is the comp var). I'm assuming that for remote I had to add in Id for some reason. I tried something like using regular expression (never did that b4) app.post("/individual/.+/usefulness", postHandler) did not work on local and wondering if it would work on remote.

I also do post requests in the same module like this

app.post("/usefulness", postHandler);
app.post("/reviewfor/usefulness", postHandler);

those seem to work

I feel like they all have in common usefulness at the end so maybe a regular expression would work.

Answer 1

This is your problem. Don't use variables this way when defining routes:

app.post("/individual/"+ comp + "/usefulness", postHandler)

It mixes up app-load-time variables ( comp in this case) with what should be per-request variables. Express handles per-request variables with route parameters. So you need something like:

app.post("/individual/:comp/usefulness", postHandler)

Then in the body of postHandler you can access req.params.comp which will be the specific value from the URL on this request like comp1 , comp2 , comp3 etc.