Custom dynamic response with Suave?
I want to build a simple counter with Suave.
[<EntryPoint>]
let main argv =
let mutable counter = 0;
let app =
choose
[
GET
>=> choose
[
path "/" >=> OK "Hello, world. ";
path "/count" >=> OK (string counter)
]
POST
>=> choose
[
path "/increment"
>=> (fun context -> async {
counter <- counter + 1
return Some context
})
]
]
startWebServer defaultConfig app
0
However, with my current solution, the count at /count never updates.
I think this is because the WebPart is computed when the app is launched, instead of for each request.
What is the best way to achieve this in Suave?
f# suave
asked Dec 31 '18 at 12:34
sdgfsdhsdgfsdh
8,27083996
add a comment |
I want to build a simple counter with Suave.
[<EntryPoint>]
let main argv =
let mutable counter = 0;
let app =
choose
[
GET
>=> choose
[
path "/" >=> OK "Hello, world. ";
path "/count" >=> OK (string counter)
]
POST
>=> choose
[
path "/increment"
>=> (fun context -> async {
counter <- counter + 1
return Some context
})
]
]
startWebServer defaultConfig app
0
However, with my current solution, the count at /count never updates.
I think this is because the WebPart is computed when the app is launched, instead of for each request.
What is the best way to achieve this in Suave?
f# suave
asked Dec 31 '18 at 12:34
sdgfsdhsdgfsdh
8,27083996
add a comment |
I want to build a simple counter with Suave.
[<EntryPoint>]
let main argv =
let mutable counter = 0;
let app =
choose
[
GET
>=> choose
[
path "/" >=> OK "Hello, world. ";
path "/count" >=> OK (string counter)
]
POST
>=> choose
[
path "/increment"
>=> (fun context -> async {
counter <- counter + 1
return Some context
})
]
]
startWebServer defaultConfig app
0
However, with my current solution, the count at /count never updates.
I think this is because the WebPart is computed when the app is launched, instead of for each request.
What is the best way to achieve this in Suave?
f# suave
asked Dec 31 '18 at 12:34
sdgfsdhsdgfsdh
8,27083996
I want to build a simple counter with Suave.
[<EntryPoint>]
let main argv =
let mutable counter = 0;
let app =
choose
[
GET
>=> choose
[
path "/" >=> OK "Hello, world. ";
path "/count" >=> OK (string counter)
]
POST
>=> choose
[
path "/increment"
>=> (fun context -> async {
counter <- counter + 1
return Some context
})
]
]
startWebServer defaultConfig app
0
However, with my current solution, the count at /count never updates.
I think this is because the WebPart is computed when the app is launched, instead of for each request.
What is the best way to achieve this in Suave?
f# suave
f# suave
asked Dec 31 '18 at 12:34
sdgfsdhsdgfsdh
8,27083996
asked Dec 31 '18 at 12:34
sdgfsdhsdgfsdh
8,27083996
asked Dec 31 '18 at 12:34
sdgfsdhsdgfsdh
8,27083996
asked Dec 31 '18 at 12:34
sdgfsdhsdgfsdh
8,27083996
asked Dec 31 '18 at 12:34
sdgfsdhsdgfsdh
8,27083996
8,27083996
add a comment |
add a comment |
1 Answer
1
active
oldest
votes
You are right in the assumption that Webparts are values, so computed once. (See this).
You need to use a closure to get what you want:
path "/count" >=> (fun ctx ->
async {
let c = counter in return! OK (string c) ctx
})
answered Dec 31 '18 at 13:20
nilekirknilekirk
55655
add a comment |
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1 Answer
1
active
oldest
votes
1 Answer
1
active
oldest
votes
active
oldest
votes
active
oldest
votes
You are right in the assumption that Webparts are values, so computed once. (See this).
You need to use a closure to get what you want:
path "/count" >=> (fun ctx ->
async {
let c = counter in return! OK (string c) ctx
})
answered Dec 31 '18 at 13:20
nilekirknilekirk
55655
add a comment |
You are right in the assumption that Webparts are values, so computed once. (See this).
You need to use a closure to get what you want:
path "/count" >=> (fun ctx ->
async {
let c = counter in return! OK (string c) ctx
})
answered Dec 31 '18 at 13:20
nilekirknilekirk
55655
add a comment |
You are right in the assumption that Webparts are values, so computed once. (See this).
You need to use a closure to get what you want:
path "/count" >=> (fun ctx ->
async {
let c = counter in return! OK (string c) ctx
})
answered Dec 31 '18 at 13:20
nilekirknilekirk
55655
You are right in the assumption that Webparts are values, so computed once. (See this).
You need to use a closure to get what you want:
path "/count" >=> (fun ctx ->
async {
let c = counter in return! OK (string c) ctx
})
answered Dec 31 '18 at 13:20
nilekirknilekirk
55655
answered Dec 31 '18 at 13:20
nilekirknilekirk
55655
answered Dec 31 '18 at 13:20
nilekirknilekirk
55655
answered Dec 31 '18 at 13:20
nilekirknilekirk
55655
55655
add a comment |
add a comment |
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