1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
|
package main
import (
"fmt"
"io"
"net/http"
"strconv"
)
func (app *application) createDatamapHandler(w http.ResponseWriter, r *http.Request) {
// Parse the multipart form
err := r.ParseMultipartForm(10 << 20) // 10Mb max
if err != nil {
http.Error(w, err.Error(), http.StatusBadRequest)
return
}
// get the uploaded file
file, _, err := r.FormFile("file")
if err != nil {
http.Error(w, "Missing file", http.StatusBadRequest)
return
}
defer file.Close()
// // create a new file on the server
// outFile, err := os.CreateTemp("", "uploaded_csv")
// if err != nil {
// http.Error(w, err.Error(), http.StatusInternalServerError)
// return
// }
// // clean up - we have to do this
// defer os.Remove(outFile.Name())
// // copy the uploaded file to the server file
// _, err = io.Copy(outFile, file)
// if err != nil {
// http.Error(w, err.Error(), http.StatusInternalServerError)
// return
// }
// var b []byte // this doesn't work
// _, err = outFile.Read(b)
// if err != nil {
// http.Error(w, err.Error(), http.StatusInternalServerError)
// return
// }
// fmt.Fprintf(w, string(b))
// Read the contents of the file
fileBytes, err := io.ReadAll(file)
if err != nil {
http.Error(w, err.Error(), http.StatusInternalServerError)
return
}
// Write the file contents to the response
w.Header().Set("Content-Type", "text/csv") // Set the appropriate content type
w.Write(fileBytes)
}
func (app *application) showDatamapHandler(w http.ResponseWriter, r *http.Request) {
id := r.PathValue("id")
app.logger.Info("the id requested", "id", id)
id_int, err := strconv.ParseInt(id, 10, 64)
if err != nil || id_int < 1 {
http.NotFound(w, r)
return
}
fmt.Fprintf(w, "show the details for datamap %d\n", id_int)
}
|
