🚀 [Feature]: Using Number as Valid Boolean Query Parameter

[afifurrohman-id]

Feature Description

It would be better right if Query Parameter Number is Valid Boolean Value using QueryBool() method

The mechanism just like a python when casting type int to bool.
0 is false otherwise is true

Additional Context (optional)

curl https://example.com/?is_ok=1&is=0

Code Snippet (optional)

package main

import "github.com/gofiber/fiber/v2"
import "log"

func main() {
  app := fiber.New()

  app.Get("/", func (ctx *fiber.Ctx) {
     fmt.Println(ctx.QueryBool("is_ok")) // true
     fmt.Println(ctx.QueryBool("is")) // false

     return nil
  })

  log.Fatal(app.Listen(":3000"))
}

Checklist:

• I agree to follow Fiber's Code of Conduct.
• I have checked for existing issues that describe my suggestion prior to opening this one.
• I understand that improperly formatted feature requests may be closed without explanation.

[ReneWerner87]

@dozheiny what do you think ?

[dozheiny]

The QueryBool function uses strconv.ParseBool function for parsing boolean value types. And it supports 1 and 0 values.
But for a -1 or any other value, it didn't support it and returned an error.
Should we add support for integers values not in the strconv.ParseBool?

[dozheiny]

Also, check this out: https://stackoverflow.com/questions/727196/boolean-true-positive-1-or-negative-1

[ReneWerner87]

The current behavior and internal usage is clear. What is your opinion to change the return value to true if the internal function returns an error because the values are not in the intersection.

[dozheiny]

In #2329 and #2391, We discussed and changed it to false from true.

[dozheiny]

I think returning a false value if it returns an error is better than returning a true.

[ReneWerner87]

I agree and would rather not take the python approach
But the approach where we use false as value if our value list for the boolean value detection is not matched (which corresponds to the underlying golang functionality)

To consider multiple opinions I would like to vote with thumbs up or thumbs down in the initial feature request comment
@gofiber/contributors @gofiber/maintainers

[gaby]

Any non-zero value should return True. For example:

curl https://example.com/?is_ok=-1

Should return True.

[sixcolors]

As a proponent of developer autonomy, I believe query parameter handling should typically be managed by the application developer. Nonetheless, gofiber provides Query* functions for convenience. Therefore, I maintain that QueryBool() should default to the Zero Value, false, for bool when no default is provided:

• Consistency: Modifying QueryBool() could disrupt applications that depend on it for parsing query parameters as boolean values. Maintaining the current behavior ensures the gofiber framework remains consistent and predictable.

• Go Standards: Adapting QueryBool() to Python’s type casting would conflict with Go’s explicit type conversion conventions and the strings package’s ParseBool() function, which only recognizes specific string values, “1”, “t”, “T”, “true”, “TRUE”, “True”, as true. See https://go.dev/ref/spec#The_zero_value, https://go.dev/ref/spec#Conversions, https://pkg.go.dev/strconv#ParseBool and https://go.dev/play/p/ula8bAP4iJw.

• Developer Control: gofiber’s QueryBool() supports an optional default value, allowing developers to specify what should happen when a query parameter is missing or invalid. For example, c.QueryBool("key", true) returns true when a parameter is absent or unparseable.

Preserving the current implementation of QueryBool() respects Go’s conventions and developers’ expectations, ensuring framework consistency and reliability.

[wangjq4214]

As a proponent of developer autonomy, I believe query parameter handling should typically be managed by the application developer. Nonetheless, gofiber provides Query* functions for convenience. Therefore, I maintain that QueryBool() should default to the Zero Value, false, for bool when no default is provided:

• Consistency: Modifying QueryBool() could disrupt applications that depend on it for parsing query parameters as boolean values. Maintaining the current behavior ensures the gofiber framework remains consistent and predictable.
• Go Standards: Adapting QueryBool() to Python’s type casting would conflict with Go’s explicit type conversion conventions and the strings package’s ParseBool() function, which only recognizes specific string values, “1”, “t”, “T”, “true”, “TRUE”, “True”, as true. See https://go.dev/ref/spec#The_zero_value, https://go.dev/ref/spec#Conversions, https://pkg.go.dev/strconv#ParseBool and https://go.dev/play/p/ula8bAP4iJw.
• Developer Control: gofiber’s QueryBool() supports an optional default value, allowing developers to specify what should happen when a query parameter is missing or invalid. For example, c.QueryBool("key", true) returns true when a parameter is absent or unparseable.

Preserving the current implementation of QueryBool() respects Go’s conventions and developers’ expectations, ensuring framework consistency and reliability.

I agree.