Go r.FormValue是空的

Question

我有一个html表单,我将值放入数据库中.但是当我插入它们时,值会出现在数据库中,如"".

这是我插入值的方式:

title, author, description := r.Form("title"), r.FormValue("author"), r.FormValue("description")

    fmt.Println(title, author, description)

    rows, err := db.Query("INSERT INTO apps (title, author, description) VALUES ($1, $2, $3)",
        title, author, description)
    PanicIf(err)

    defer rows.Close()

    http.Redirect(w, r, "/myapps", http.StatusFound)

    db.Close()

Html:

<form action="/apps" method="POST">
    <div class="form-group">
        <label>Name</label>
        <input type="text" class="form-control" name="title" />
    </div>
    <div class="form-group">
        <label>Author</label>
        <input type="text" class="form-control" name="author" />
    </div>
    <div class="form-group">
        <label>Description</label>
        <input type="text" class="form-control" name="description" />
    </div>

    <input type="submit" value="Create" class="btn btn-success" />
    <a href="/myapps">
        <input type="button" value="Return" class="btn btn-primary" />
    </a>
</form>

formvalues可能有问题吗？

Answer 1

在使用/ 之前, 必须先调用r.ParseForm().r.Formr.PostForm

来自:http://golang.org/src/pkg/net/http/request.go#L168

// Form contains the parsed form data, including both the URL
// field's query parameters and the POST or PUT form data.
// This field is only available after ParseForm is called.
// The HTTP client ignores Form and uses Body instead.
Form url.Values

// PostForm contains the parsed form data from POST or PUT
// body parameters.
// This field is only available after ParseForm is called.
// The HTTP client ignores PostForm and uses Body instead.
PostForm url.Values