form - examples_test.go

     1  package form_test
     2  
     3  import (
     4  	"encoding/json"
     5  	"fmt"
     6  	"net/http"
     7  	"net/http/httptest"
     8  	"net/url"
     9  	"strings"
    10  
    11  	"vimagination.zapto.org/form"
    12  )
    13  
    14  func Example() {
    15  	type Form struct {
    16  		Username string   `form:"user,required,regex=^[a-zA-Z0-9_]{3,16}$"`
    17  		Age      int      `form:"age,required,min=18,max=120"`
    18  		Active   bool     `form:"isActive"`
    19  		Tags     []string `form:"tags,regex=^[a-z]+$"`
    20  		IQ       *float64 `form:"iq,min=0,max=200"`
    21  		Token    string   `form:"token,post,required"`
    22  	}
    23  
    24  	handler := func(w http.ResponseWriter, r *http.Request) {
    25  		var f Form
    26  
    27  		if err := form.Process(r, &f); err != nil {
    28  			http.Error(w, err.Error(), http.StatusBadRequest)
    29  
    30  			return
    31  		}
    32  
    33  		json.NewEncoder(w).Encode(f)
    34  	}
    35  
    36  	data := url.Values{}
    37  	data.Set("user", "exampleUser")
    38  	data.Set("age", "30")
    39  	data.Set("isActive", "true")
    40  	data.Add("tags", "example")
    41  	data.Add("tags", "tag")
    42  	data.Set("iq", "123.45")
    43  	data.Set("token", "my_token")
    44  
    45  	req := httptest.NewRequest(http.MethodPost, "/", strings.NewReader(data.Encode()))
    46  
    47  	req.Header.Set("Content-Type", "application/x-www-form-urlencoded")
    48  
    49  	w := httptest.NewRecorder()
    50  
    51  	handler(w, req)
    52  
    53  	fmt.Println(w.Body.String())
    54  
    55  	// Output: {"Username":"exampleUser","Age":30,"Active":true,"Tags":["example","tag"],"IQ":123.45,"Token":"my_token"}
    56  }
    57