Developers are not forced to upgrade if they don't really need it. Upgrade whenever you feel ready.
> Iris uses the [vendor directory](https://docs.google.com/document/d/1Bz5-UB7g2uPBdOx-rw5t9MxJwkfpx90cqG9AFL0JAYo) feature, so you get truly reproducible builds, as this method guards against upstream renames and deletes.
**How to upgrade**: Open your command-line and execute this command: `go get -u github.com/kataras/iris` or let the automatic updater do that for you.
- fix `APIBuilder, Party#StaticWeb` and `APIBuilder, Party#StaticEmbedded` wrong strip prefix inside children parties
- keep the `iris, core/router#StaticEmbeddedHandler` and remove the `core/router/APIBuilder#StaticEmbeddedHandler`, (note the `Handler` suffix) it's global and has nothing to do with the `Party` or the `APIBuilder`
- fix high path cleaning between `{}` (we already escape those contents at the [interpreter](core/router/macro/interpreter) level but some symbols are still removed by the higher-level api builder) , i.e `\\` from the string's macro function `regex` contents as reported at [927](https://github.com/kataras/iris/issues/927) by [commit e85b113476eeefffbc7823297cc63cd152ebddfd](https://github.com/kataras/iris/commit/e85b113476eeefffbc7823297cc63cd152ebddfd)
- sync the `golang.org/x/sys/unix` vendor
## The most important
We've made static files served up to 8 times faster using the new tool, <https://github.com/kataras/bindata> which is a fork of your beloved `go-bindata`, some unnecessary things for us were removed there and contains some additions for performance boost.
## Reqs/sec with [shuLhan/go-bindata](https://github.com/shuLhan/go-bindata) and alternatives
A **new** function `Party#StaticEmbeddedGzip` which has the same input arguments as the `Party#StaticEmbedded` added. The difference is that the **new**`StaticEmbeddedGzip` accepts the `GzipAsset` and `GzipAssetNames` from the `bindata` (go get -u github.com/kataras/bindata/cmd/bindata).
You can still use both `bindata` and `go-bindata` tools in the same folder, the first for embedding the rest of the static files (javascript, css, ...) and the second for embedding the templates!
A full example can be found at: [_examples/file-server/embedding-gziped-files-into-app/main.go](_examples/file-server/embedding-gziped-files-into-app/main.go).
- The only one API Change is the [Application/Context/Router#RouteExists](https://godoc.org/github.com/kataras/iris/core/router#Router.RouteExists), it accepts the `Context` as its first argument instead of last now.
- Fix cors middleware via https://github.com/iris-contrib/middleware/commit/048e2be034ed172c6754448b8a54a9c55debad46, relative issue: https://github.com/kataras/iris/issues/922 (still pending for a verification).
- Add `Context#NextOr` and `Context#NextOrNotFound`
```go
// NextOr checks if chain has a next handler, if so then it executes it
// otherwise it sets a new chain assigned to this Context based on the given handler(s)
// and executes its first handler.
//
// Returns true if next handler exists and executed, otherwise false.
//
// Note that if no next handler found and handlers are missing then
// it sends a Status Not Found (404) to the client and it stops the execution.
NextOr(handlers ...Handler) bool
// NextOrNotFound checks if chain has a next handler, if so then it executes it
// otherwise it sends a Status Not Found (404) to the client and stops the execution.
//
// Returns true if next handler exists and executed, otherwise false.
NextOrNotFound() bool
```
- Add a new `Party#AllowMethods` which if called before any `Handle, Get, Post...` will clone the routes to that methods as well.
- Fix trailing slash from POST method request redirection as reported at: https://github.com/kataras/iris/issues/921 via https://github.com/kataras/iris/commit/dc589d9135295b4d080a9a91e942aacbfe5d56c5
- Add examples for read using custom decoder per type, read using custom decoder via `iris#UnmarshalerFunc` and to complete it add an example for the `context#ReadXML`, you can find them [here](https://github.com/kataras/iris/tree/master/_examples#how-to-read-from-contextrequest-httprequest)via https://github.com/kataras/iris/commit/78cd8e5f677fe3ff2c863c5bea7d1c161bf4c31e.
- Add one more example for custom router macro functions, relative to https://github.com/kataras/iris/issues/918, you can find it [there](https://github.com/kataras/iris/blob/master/_examples/routing/dynamic-path/main.go#L144-L158), via https://github.com/kataras/iris/commit/a7690c71927cbf3aa876592fab94f04cada91b72
- Add wrappers for `Pongo`'s `AsValue()` and `AsSaveValue()` by @neenar via PR: https://github.com/kataras/iris/pull/913
- Remove unnecessary reflection usage on `context#UnmarshalBody` via https://github.com/kataras/iris/commit/4b9e41458b62035ea4933789c0a132c3ef2a90cc
Fix subdomains' `StaticEmbedded`&`StaticWeb` not found errors, as reported by [@speedwheel](https://github.com/speedwheel) via [facebook page's chat](https://facebook.com/iris.framework).
A new minor version family because it contains a **BREAKING CHANGE** and a new `Party#Reset` function.
### Party#Done behavior change & new Party#DoneGlobal introduced
As correctly pointed out by @likakuli at https://github.com/kataras/iris/issues/901, the old `Done` registered
handlers globally instead of party's and its children routes, this was not by accident because `Done` was introduced
before the `UseGlobal` idea and it didn't change for the shake of stability. Now it's time to move on, the new `Done` should be called before the routes that they care about those done handlers and the **new**`DoneGlobal` works like the old `Done`; order doesn't matter and it appends those done handlers
to the current registered routes and the future, globally (to all subdomains, parties every route in the Application).
The [routing/writing-a-middleware](_examples/routing/writing-a-middleware) examples are updated, read those to understand what's going on, although if you used iris before and you know the vocabulary we use you don't have to, the `DoneGlobal` and `Done` are clearly separated.
### Party#Reset
A new `Party#Reset()` function introduced in order to be able to clear parent's Party's begin and done handlers that are registered via `Use` and `Done` at a previous state, nothing crazy about this, it just clears the `middleware` and `doneHandlers` of the current Party instance, see `core/router#APIBuilder` for more.
### Update your codebase
Just replace all existing `.Done(` with `.DoneGlobal(` using a rich code editor (like the [VSCode](https://marketplace.visualstudio.com/items?itemName=kataras2006.iris)) which supports `find and replace all` and you're ready to Go:)
- Multi-Level subdomain redirect helper, you can find an example [here](https://github.com/kataras/iris/blob/master/_examples/subdomains/redirect/main.go)
- Cache middleware which makes use of the `304` status code, request fires from client to server but server respond with a status code, client is responsible to render the cached, you can find an example [here](https://github.com/kataras/iris/blob/master/_examples/cache/client-side/main.go)
-`websocket/Connection#IsJoined(roomName string)` new method to check if a user is joined to a room. An un-joined connections cannot send messages, this check is optionally.
More:
- update vendor/golang/crypto package to its latest version again, they have a lot of fixes there, as you know we're always following the dependencies for any fixes and meanful updates.
- [don't force-set content type on gzip response writer's WriteString and Writef if already there](https://github.com/kataras/iris/commit/af79aad11932f1a4fcbf7ebe28274b96675d0000)
- [add context#StatusCodeNotSuccessful variable for customize even the rfc2616-sec10](https://github.com/kataras/iris/commit/c56b7a3f04d953a264dfff15dadd2b4407d62a6f)
- [fix example comment on routing/dynamic-path/main.go#L101](https://github.com/kataras/iris/commit/0fbf1d45f7893cb1393759b7362444f3d381d182)
**Every server should be upgraded to this version**, it contains fixes for the _tls-sni challenge disabled_ some days ago by letsencrypt.org which caused almost every https-enabled golang server to be unable to be functional, therefore support for the _http-01 challenge type_ added. Now the server is testing all available letsencrypt challenges.
Not any serious problems were found to be resolved here but one, the first one which is important for devs that used the [cache](cache) package.
- fix a single one cache handler didn't work across multiple route handlers at the same time https://github.com/kataras/iris/pull/852, as reported at https://github.com/kataras/iris/issues/850
- do not allow concurrent access to the `ExecuteWriter -> Load` when `view#Engine##Reload` was true, as requested at https://github.com/kataras/iris/issues/872
- badge for open-source projects powered by Iris, learn how to add that badge to your open-source project at [FAQ.md](FAQ.md) file
- upstream update for `golang/crypto` to apply the fix about the [tls-sni challenge disabled](https://letsencrypt.status.io/pages/incident/55957a99e800baa4470002da/5a55777ed9a9c1024c00b241) https://github.com/golang/crypto/commit/13931e22f9e72ea58bb73048bc752b48c6d4d4ac (**relative to iris.AutoTLS**)
1. The Chinese README_ZH.md and HISTORY_ZH.md was translated by @Zeno-Code via https://github.com/kataras/iris/pull/858
2. New Russian README_RU.md translations by @merrydii via https://github.com/kataras/iris/pull/857
3. New Greek README_GR.md and HISTORY_GR.md translations via https://github.com/kataras/iris/commit/8c4e17c2a5433c36c148a51a945c4dc35fbe502a#diff-74b06c740d860f847e7b577ad58ddde0 and https://github.com/kataras/iris/commit/bb5a81c540b34eaf5c6c8e993f644a0e66a78fb8
You can [contact](mailto:Kovalenkodiana8@gmail.com) her for any design-related enquiries or explore and send a direct message via [instagram](https://www.instagram.com/merry.dii/).
> The new version adds 75 plus new commits, the PR is located [here](https://github.com/kataras/iris/pull/849) read the internal changes if you are developing a web framework based on Iris. Why 9 was skipped? Because.
The new package [hero](hero) contains features for binding any object or function that `handlers` may use, these are called dependencies. Hero funcs can also return any type of values, these values will be dispatched to the client.
> You may saw binding before but you didn't have code editor's support, with Iris you get truly safe binding thanks to the new `hero` package. It's also fast, near to raw handlers performance because Iris calculates everything before server ran!
Below you will see some screenshots we prepared for you in order to be easier to understand:
`hero funcs` are very easy to understand and when you start using them **you never go back**.
Examples:
- [Basic](_examples/hero/basic/main.go)
- [Overview](_examples/hero/overview)
## MVC
You have to understand the `hero` package in order to use the `mvc`, because `mvc` uses the `hero` internally for the controller's methods you use as routes, the same rules applied to those controller's methods of yours as well.
With this version you can register **any controller's methods as routes manually**, you can **get a route based on a method name and change its `Name` (useful for reverse routing inside templates)**, you can use any **dependencies** registered from `hero.Register` or `mvc.New(iris.Party).Register` per mvc application or per-controller, **you can still use `BeginRequest` and `EndRequest`**, you can catch **`BeforeActivation(b mvc.BeforeActivation)` to add dependencies per controller and `AfterActivation(a mvc.AfterActivation)` to make any post-validations**, **singleton controllers when no dynamic dependencies are used**, **Websocket controller, as simple as a `websocket.Connection` dependency** and more...
Examples:
**If you used MVC before then read very carefully: MVC CONTAINS SOME BREAKING CHANGES BUT YOU CAN DO A LOT MORE AND EVEN FASTER THAN BEFORE**
**PLEASE READ THE EXAMPLES CAREFULLY, WE'VE MADE THEM FOR YOU**
Old examples are here as well. Compare the two different versions of each example to understand what you win if you upgrade now.
| [Overview - Plus Repository and Service layers](_examples/mvc/overview) | [OLD Overview - Plus Repository and Service layers](https://github.com/kataras/iris/tree/v8/_examples/mvc/overview) |
| [Login showcase - Plus Repository and Service layers](_examples/mvc/login) | [OLD Login showcase - Plus Repository and Service layers](https://github.com/kataras/iris/tree/v8/_examples/mvc/login) |
When you just want one value and not key-value pairs, you used to use an empty string on the `ViewData`, which is fine, especially if you preload these from a previous handler/middleware in the request handlers chain.
`sessions/session#GetString` can now return a filled value even if the stored value is a type of integer, just like the memstore, the context's temp store, the context's path parameters and the context's url parameters.
