Middleware is a fundamental module that provides the default middleware for buffalo applications.

The default middleware is setup by default on a new Buffalo app.

$ buffalo new myapp

Buffalo CLI will generate application scafflod and actions/app.go will be configured to use default middlewares by default.

$ go get github.com/gobuffalo/middleware

contenttype middleware provides a feature that sets the fallback content type (which is used when the client sent nothing) or overrides the client-specified content type. This middleware will be enabled by default in your app when you generate a new API application with buffalo new --api command.

csrf middleware provides CSRF protection for Buffalo apps. This middleware will be enabled by default in your app when you generate a new application scaffold with buffalo new command.

forcessl middleware provides a feature that automatically redirects requests that is not use HTTPS. This middleware will be enabled by default in your app when you generate a new application scaffold with buffalo new command. It is configured to enforce the redirection in the production mode only. You could customize it in actions/app.go if you need a different behavior.

i18n middleware provides internationalization support in your application:

• User language detection from configurable sources
• Translation helper using locales bundles from github.com/nicksnyder/go-i18n
• Localized views

See https://gobuffalo.io/documentation/guides/localization/ for further information about Buffalo translation features and configuration.

paramlogger middleware provides the request parameter logging feature. This middleware will be enabled by default in your app when you generate a new application scaffold with buffalo new command.

By default, it filters out pre-defined sensitive parameters and they will be printed as [FILTERED] in the log. (keywords are case insensitive)

Currently, the pre-defined parameters are:

• password
• passwordconfirmation
• creditcard
• cvc

paramlogger also allows to exclude user-defined parameters by specifying those in the ParameterExclusionList before using the ParamegerLogger middleware in the app.

    paramlogger.ParameterExclusionList = append(paramlogger.ParameterExclusionList, "secret", "phone_number")
    app.Use(paramlogger.ParameterLogger)

or

    paramlogger.ParameterExclusionList = []string{
        "password",
        "passwordconfirmation",
        "secret",
        "phone_number",
    }
    app.Use(paramlogger.ParameterLogger)

• https://gobuffalo.io/documentation/request_handling/middleware/
• https://gobuffalo.io/documentation/guides/localization/