form

type MyForm struct {
	A  string
	A1 *string

	B  int
	B1 *int

	C  float64
	C1 *float64

	D  time.Time
	D1 *time.Time

	E  uint
	E1 *uint

	F  bool
	F1 *bool
}

encoder := form.NewEncoder()

parent := html.Node{
	Type:     html.ElementNode,
	Data:     atom.Form.String(),
	DataAtom: atom.Form,
}

a1 := "some string"
b1 := 2121
c1 := 3333.0
d1 := time.Date(2024, 8, 28, 0, 0, 0, 0, time.UTC)
e1 := uint(302910)
f1 := true

err := encoder.EncodeValue(&parent, MyForm{
	A:  "A string",
	A1: &a1,
	B:  2,
	B1: &b1,
	C:  3.0,
	C1: &c1,
	D:  time.Date(2023, 8, 28, 0, 0, 0, 0, time.UTC),
	D1: &d1,
	E:  uint(109812309),
	E1: &e1,
	F:  false,
	F1: &f1,
})
if err != nil {
	fmt.Println(err)
	return
}

PrettyRender(os.Stdout, &parent)

Output:

<form>
    <input name="A" type="text" value="A string"/>
    <input name="A1" type="text" value="some string"/>
    <input name="B" type="number" value="2" min="-9223372036854775808" max="9223372036854775807"/>
    <input name="B1" type="number" value="2121" min="-9223372036854775808" max="9223372036854775807"/>
    <input name="C" type="number" step="any" value="3.000000"/>
    <input name="C1" type="number" step="any" value="3333.000000"/>
    <input name="D" type="datetime-local" value="2023-08-28T00:00:00"/>
    <input name="D1" type="datetime-local" value="2024-08-28T00:00:00"/>
    <input name="E" type="number" value="109812309" min="0" max="18446744073709551615"/>
    <input name="E1" type="number" value="302910" min="0" max="18446744073709551615"/>
    <input name="F" type="checkbox"/>
    <input name="F1" type="checkbox" checked="true"/>
</form>

package main

import (
	"fmt"
	"os"

	"gitlab.com/sj1k/form"
	"golang.org/x/net/html"
	"golang.org/x/net/html/atom"
)

func main() {

	type Signup struct {
		Name string `label:"Some label here!"`
		Pass string `label:"Enter a password!" attr:"type=password"`
		Age  int
	}

	// AttrbuteWrapper extracts and applies attributes from struct tags.
	// This will load attributes from the `attr` tag.
	attrWrapper := form.NewAttributeWrapper()

	// LabelWrapper wraps the input with a <label> element if the `label:""` tag exists.
	labelWrapper := form.NewLabelWrapper()

	encoder := form.NewEncoder()
	encoder.SetWrappers(&labelWrapper, &attrWrapper)

	parent := CreateFormNode()

	err := encoder.EncodeValue(&parent, &Signup{})
	if err != nil {
		fmt.Println(err)
		return
	}

	PrettyRender(os.Stdout, &parent)

}

func CreateFormNode() html.Node {
	return html.Node{
		Type:     html.ElementNode,
		Data:     atom.Form.String(),
		DataAtom: atom.Form,
	}
}

Output:

<form>
    <label>Some label here!
        <input name="Name" type="text"/>
    </label>
    <label>Enter a password!
        <input type="password" name="Pass"/>
    </label>
    <input name="Age" type="number" value="0" min="-9223372036854775808" max="9223372036854775807"/>
</form>