Databases
StackOverflow2013
Postsdbo
PO
 

Note that there are some explanatory texts on larger screens.

plurals
  1. PO
    primarykey
    data
    text
    <p>Although it is possible to do this with channels, I would prefer a hash (map) that is protected by a mutex, since it is easier in this case.</p> <p>To give you an idea and get you going:</p> <pre><code>package main import ( "fmt" "net/http" "sync" ) type state struct { *sync.Mutex // inherits locking methods Vals map[string]string // map ids to values } var State = &amp;state{&amp;sync.Mutex{}, map[string]string{}} func get(rw http.ResponseWriter, req *http.Request) { State.Lock() defer State.Unlock() // ensure the lock is removed after leaving the the function id := req.URL.Query().Get("id") // if you need other types, take a look at strconv package val := State.Vals[id] delete(State.Vals, id) rw.Write([]byte("got: " + val)) } func post(rw http.ResponseWriter, req *http.Request) { State.Lock() defer State.Unlock() id := req.FormValue("id") State.Vals[id] = req.FormValue("val") rw.Write([]byte("go to http://localhost:8080/?id=42")) } var form = `&lt;html&gt; &lt;body&gt; &lt;form action="/" method="POST"&gt; ID: &lt;input name="id" value="42" /&gt;&lt;br /&gt; Val: &lt;input name="val" /&gt;&lt;br /&gt; &lt;input type="submit" value="submit"/&gt; &lt;/form&gt; &lt;/body&gt; &lt;/html&gt;` func formHandler(rw http.ResponseWriter, req *http.Request) { rw.Write([]byte(form)) } // for real routing take a look at gorilla/mux package func handler(rw http.ResponseWriter, req *http.Request) { switch req.Method { case "POST": post(rw, req) case "GET": if req.URL.String() == "/form" { formHandler(rw, req) return } get(rw, req) } } func main() { fmt.Println("go to http://localhost:8080/form") // thats the default webserver of the net/http package, but you may // create custom servers as well err := http.ListenAndServe("localhost:8080", http.HandlerFunc(handler)) if err != nil { fmt.Println(err) } } </code></pre>
    singulars
    1. This table or related slice is empty.
    1. POGolang: Shared communication in async http server
      singulars
      1. PTQuestion
    1. PTAnswer
    1. USmetakeule
    1. USmetakeule
    plurals
    1. This table or related slice is empty.
    1. This table or related slice is empty.
    1. POGolang: Shared communication in async http server
      singulars
      1. PTQuestion
    1. This table or related slice is empty.
    1. VO
      singulars
      1. PO
      1. This table or related slice is empty.
      1. VTAcceptedByOriginator
    2. VO
      singulars
      1. PO
      1. This table or related slice is empty.
      1. VTUpMod
    3. VO
      singulars
      1. PO
      1. This table or related slice is empty.
      1. VTUpMod
    1. COI'm getting req.PostForm undefined (type *http.Request has no field or method PostForm)
      singulars
      1. PO
      1. USkwolfe
    2. COstrange it worked for me (go1.1)... however I updated the source, it should work now and is a bit shorter...
      singulars
      1. PO
      1. USmetakeule
    3. CO@kwolfe I looked it up - they changed the field from *http.Request.Form (go1.0) to *http.Request.FormValue (go1.1). However the rewritten variant *http.Request.FormValue() works with both versions. I would strongly suggest you update to go 1.1.1 since the online documentation reflects that version and it's much faster.
      singulars
      1. PO
      1. USmetakeule
 

Querying!

 
Guidance
A row detail

Detail views are divided into sections. All the information in the data section comes from columns in the selected row. The other sections display data from other, related rows.

Related data can be related in a to-one or a to-many fashion. Captions of data related in a to-many fashion link to a list view showing a filtered view of the table.

Try moving around until you find a non-empty to-many entry and click on the label to get to one. You can move back to the root by clicking on the database name in the header.

SQuiL has stopped working due to an internal error.

If you are curious you may find further information in the browser console, which is accessible through the devtools (F12).

Reload