Expose echo.add() method for dynamic route registration

[nicklaw5]

This exposes the echo.add (becomes echo.Add) method which makes it easy to iterate over a map of routes and dynamically register them.

For example:

package main

import (
	"log"
	"net/http"

	"github.com/labstack/echo"
)

type Route struct {
	Path    string
	Method  string
	Handler echo.HandlerFunc
}

var routes = []*Route{
	&Route{
		Path:   "/api/users",
		Method: echo.GET,
		Handler: func(c echo.Context) error {
			return c.String(http.StatusOK, "Listing users...")
		},
	},
	&Route{
		Path:   "/api/users",
		Method: echo.POST,
		Handler: func(c echo.Context) error {
			return c.String(http.StatusOK, "Creating user...")
		},
	},
}

func main() {
	e := echo.New()

	for _, route := range routes {
		e.Add(route.Method, route.Path, route.Handler)
	}

	if err := e.Start(":8888"); err != nil {
		log.Fatalf("Failed to start server: %s", err.Error())
	}
}

[codecov]

Codecov Report

Merging #965 into master will not change coverage.
The diff coverage is 100%.

@@          Coverage Diff           @@
##           master    #965   +/-   ##
======================================
  Coverage    78.2%   78.2%           
======================================
  Files          27      27           
  Lines        1831    1831           
======================================
  Hits         1432    1432           
  Misses        278     278           
  Partials      121     121

Impacted Files	Coverage Δ
echo.go	87.1% <100%> (ø)	⬆️
group.go	93.02% <100%> (ø)	⬆️

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[vishr]

Can you put a godoc like Any or similar methods?

[nicklaw5]

godoc added.

[vishr]

Not for all methods, it should be "for an HTTP method and path ..."

[nicklaw5]

Sorry, my head's not int the game today 😞

Should it be "for an HTTP method..." or "for a HTTP method..."?

[vishr]

Lets stick to an.

[vishr]

@nicklaw5 thanks for your contribution 🎉