How to define a middleware?

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Describe the bug
@page "/" File("Index.html") is not working, it trows

┌ Error: error handling request
│   exception =
│    UndefVarError: File not defined

To Reproduce
Steps to reproduce the behavior:

1. Set up environment
2. Arguments
3. Function/method
4. See error

Expected behavior
Load the html page

Environment

• Repository
• OS: Manaro Linux
• REPL

all request return NotFound

julia-v0.7-rc2

Hi, I am exploring web server's for Julia to serve results from a deep neural network written in Julia. I love that Merly's style is in the tradition of Flask: declarative and simple.

I'd like to know about Merly's internal like

• Is it based on a Middleware framework?
• Is is asynchronous or uses "green threads"?
• How well does it scale?
• Is it compatible with the latest Julia?

Thanks!

error al procesar los siguientes parámetros:

?lat=17.0637447&lon=-96.7253164&accuracy=100&countryCode=**&lang=en&phoneId=dummyPhone&version=8.4&radius=1500

Describe the bug
UndefVarError is thrown when running README Example.
app = Merly.app(); app.start() is working.
How can I use start method ?

To Reproduce
Steps to reproduce the behavior:

Run below on julia repl

using Merly

u="hello"

@page "/" "Hello World!"
@page "/hello/:usr>" "<b>Hello {{usr}}!</b>"

@route GET "/get/:data>" begin
  "get this back: {{data}}"
end

@route POST "/post" begin
  res.body = "I did something!"
end

@route POST|PUT|DELETE "/" begin
  println("params: ",req.params)
  println("query: ",req.query)
  println("body: ",req.body)

  res.headers["Content-Type"]= "text/plain"

  "I did something!"
end

Get("/data", (req,res)->(begin
  res.headers["Content-Type"]= "text/plain"
  u*"data"
end))


Post("/data", (req,res)->(begin
  println("params: ",req.params)
  println("query: ",req.query)
  println("body: ",req.body)
  res.headers["Content-Type"]= "text/plain"
  global u="bye"
  "I did something!"
end))


start(verbose = false)

Expected behavior
Run Merly app without Error.

Environment

• Julia: v1.5.0
• OS: macOS v10.14.6
• IDE: REPL

Is it possible to use merly and websocket.jl(https://github.com/JuliaWeb/WebSockets.jl) at same time?

Describe the bug
I get a "variable not defined" error from both the Redis and Formatting packages when using @route GET "/url" but not when using Get("/url", (res, req)). I prefer the @route syntax so it's slightly inconvenient for me.

To Reproduce
Steps to reproduce the behavior:

using Merly, Redis, Formatting

server = Merly.app()
conn = RedisConnection()

@route GET "/test-redis" begin
    res.body = Redis.get(conn, "key")
end

@route GET "/test-format" begin
    res.body = Formatting.format("Hello {:s}", "world")
end

server.start()

curl -v "http://localhost:8000/test-redis"
curl -v "http://localhost:8000/test-format"

Expected behavior
A GET route that can connect to a Redis database or format a string. Instead get "UndefVarError: Redis not defined". I also tested HTTP and JSON packages and they are both defined when using @route.

Environment

• OS: Ubuntu and Fedora both do this

This is an AWESOME project. Thank you so much for writing it! 👍 I just found it and ripped out some of the code to use in a similar julia microframework (with a radically different routing engine)

Have you written any benchmarks for Merly's routing? If you haven't and I find some time, I'll try to share some back with you. If you're interested in working on that, we can pair program if you'd like. 😈

I tried using

server.use ("CORS")

but it is only working for GET requests,
CORS do not work with POST requests

@route GET "/get" begin
  "get this back: "
end

@route POST "/get" begin
  "get this back: "
end