Feat: add option to sort list of endpoints (swaggo#288)

README.md

@@ -178,3 +178,4 @@ func main() {
 | InstanceName             | string | "swagger"  | The instance name of the swagger document. If multiple different swagger instances should be deployed on one gin router, ensure that each instance has a unique name (use the _--instanceName_ parameter to generate swagger documents with _swag init_). |
 | PersistAuthorization     | bool   | false      | If set to true, it persists authorization data and it would not be lost on browser close/refresh.                                                                                                                                                         |
 | Oauth2DefaultClientID    | string | ""         | If set, it's used to prepopulate the _client_id_ field of the OAuth2 Authorization dialog.                                                                                                                                                                |
+| OperationsSorter         | string | "alpha"    | Controls the order which APIs are sorted. Default sorts endpoints alphabetically, it also supports "method" to sort by method or a custom sort function: \`Function=(a => a)\`                                                                                                |

swagger.go

@@ -1,6 +1,7 @@
 package ginSwagger
 
 import (
+	"fmt"
 	htmlTemplate "html/template"
 	"net/http"
 	"os"
@@ -24,6 +25,7 @@ type swaggerConfig struct {
 	DeepLinking              bool
 	PersistAuthorization     bool
 	Oauth2DefaultClientID    string
+	OperationsSorter         string
 }
 
 // Config stores ginSwagger configuration variables.
@@ -37,6 +39,7 @@ type Config struct {
 	DeepLinking              bool
 	PersistAuthorization     bool
 	Oauth2DefaultClientID    string
+	OperationsSorter         string
 }
 
 func (config Config) toSwaggerConfig() swaggerConfig {
@@ -51,6 +54,7 @@ func (config Config) toSwaggerConfig() swaggerConfig {
 		Title:                 config.Title,
 		PersistAuthorization:  config.PersistAuthorization,
 		Oauth2DefaultClientID: config.Oauth2DefaultClientID,
+		OperationsSorter:      config.OperationsSorter,
 	}
 }
 
@@ -75,6 +79,18 @@ func DeepLinking(deepLinking bool) func(*Config) {
 	}
 }
 
+// OperationsSorter sets the swagger operationsSorter configuration. Either "alpha", "method" or Function=(a => a)
+// default is "alpha" (alphabetically sorted).
+func OperationsSorter(operationsSorter string) func(*Config) {
+	return func(c *Config) {
+		if operationsSorter == "alpha" || operationsSorter == "method" {
+			c.OperationsSorter = fmt.Sprintf(`"%s"`, operationsSorter)
+			return
+		}
+		c.OperationsSorter = operationsSorter
+	}
+}
+
 // DefaultModelsExpandDepth set the default expansion depth for models
 // (set to -1 completely hide the models).
 func DefaultModelsExpandDepth(depth int) func(*Config) {
@@ -117,6 +133,7 @@ func WrapHandler(handler *webdav.Handler, options ...func(*Config)) gin.HandlerF
 		DeepLinking:              true,
 		PersistAuthorization:     false,
 		Oauth2DefaultClientID:    "",
+		OperationsSorter:         `"alpha"`,
 	}
 
 	for _, c := range options {
@@ -138,6 +155,15 @@ func CustomWrapHandler(config *Config, handler *webdav.Handler) gin.HandlerFunc
 		config.Title = "Swagger UI"
 	}
 
+	if config.OperationsSorter == "" {
+		config.OperationsSorter = `"alpha"`
+	}
+
+	//wraps the operationsSorter string options in quotes to both support "alpha", "method" and custom functions
+	if config.OperationsSorter == "alpha" || config.OperationsSorter == "method" {
+		config.OperationsSorter = fmt.Sprintf(`"%s"`, config.OperationsSorter)
+	}
+
 	// create a template with name
 	index, _ := htmlTemplate.New("swagger_index.html").Parse(swaggerIndexTpl)
 	js, _ := textTemplate.New("swagger_index.js").Parse(swaggerJSTpl)
@@ -257,6 +283,7 @@ window.onload = function() {
     validatorUrl: null,
     oauth2RedirectUrl: {{.Oauth2RedirectURL}},
     persistAuthorization: {{.PersistAuthorization}},
+	operationsSorter: {{.OperationsSorter}},
     presets: [
       SwaggerUIBundle.presets.apis,
       SwaggerUIStandalonePreset

swagger_test.go

@@ -254,3 +254,20 @@ func TestOauth2DefaultClientID(t *testing.T) {
 	configFunc(&cfg)
 	assert.Equal(t, "", cfg.Oauth2DefaultClientID)
 }
+
+func TestOperationSorter(t *testing.T) {
+	var cfg Config
+	assert.Equal(t, "", cfg.OperationsSorter)
+
+	configFunc := OperationsSorter("method")
+	configFunc(&cfg)
+	assert.Equal(t, `"method"`, cfg.OperationsSorter)
+
+	configFunc = OperationsSorter(`alpha`)
+	configFunc(&cfg)
+	assert.Equal(t, `"alpha"`, cfg.OperationsSorter)
+
+	configFunc = OperationsSorter("")
+	configFunc(&cfg)
+	assert.Equal(t, "", cfg.OperationsSorter)
+}