A new IHP release, mostly containing bug fixes and productivty improvements to existing features 🛠️

IHP is a modern batteries-included haskell web framework, built on top of Haskell and Nix. Blazing fast, secure, easy to refactor and the best developer experience with everything you need - from prototype to production.

Major Changes

🚪Stripe Cancelations are Supported now:
The IHP Stripe Integration now supports two further events that allow your app to automatically handle with unsubscribes:
```
    on CustomerSubscriptionUpdated { subscription = stripeSubscription } = do
        -- ...
    on CustomerSubscriptionDeleted { subscriptionId } = do
        -- ...
```
Learn how to handle unsubscribes in the docs.
🧰 Haskell Language Server: Performance Improvements
The Haskell Language Server provided by IHP is now compiled with the --enable-executable-dynamic flag. This flag significantly improved performance of using HLS in IHP code bases as reported by multiple people.

If you still have performance issues, please submit issues directly here haskell/haskell-language-server#2340

🍪 Cookies:
While IHP had supported session cookies for a long time now, we never got to add a simple function to add your own non-session cookies. Now it's finally there, meet setCookie:

import Web.Cookie

action MyAction = do
    setCookie defaultSetCookie
            { setCookieName = "exampleCookie"
            , setCookieValue = "exampleValue"
            }

📃 Multi-line Strings:
IHP apps now have [trimming|some text|] in scope by default. This trimming quasi quoter provides a useful way to write multi line strings, like this:
```
let myString = [trimming|
    My
    multi line
    string
|]
```
It's called trimming because the function automatically trims/removes the indentation spaces at the left. So the above string is My\nmulti line\nstring instead of <4 spaces>My\n<4 spaces>multi line\n<4 spaces>\nstring.

📫 Mail Improvements:
You can now easily set reply-to, cc, bcc or custom headers when using the IHP Mailer system:

instance BuildMail ConfirmationMail where
    subject = "Subject"
    to ConfirmationMail { .. } = Address { addressName = Just "F L", addressEmail = "fname.lname@example.com" }
    from = "hi@example.com"
    html ConfirmationMail { .. } = [hsx|
        Hello World
    |]

    -- New:

    replyTo ConfirmationMail { .. } =
        Just Address { addessName = "Support", addressEmail = "support@example.com" }
    
    cc ConfirmationMail { .. } =
        [ Address { addessName = "Some one", addressEmail = "someone@example.com" } ]
    
    bcc ConfirmationMail { .. } =
        [ Address { addessName = "Some one", addressEmail = "someone@example.com" } ]

    -- Custom headers
    headers ConfirmationMail { .. } =
        [ ("X-Mailer", "mail4j 2.17.0")
        , ("In-Reply-To", "<123456@list.example.com>")
        ]

🗑️ deleteRecordByIds
You can now easier delete records when you only know their ids:

let postId :: [Id Post] = ["5280e9a5-3105-45b3-8aea-6a081c596a11", "6761216b-c508-4c88-80fc-66316a1dc88c"]
deleteRecordByIds postId

🆕 fetchLatest
There's now a helper to fetch latest record of something:

latestUser <- query @User |> fetchLatest

-- Previously you had to write query:
latestUser <- query @User
        |> orderByDesc #createdAt
        |> fetchOneOrNothing

Other Changes

Full Changelog: v0.17.0...v0.18.0

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→ See the UPGRADE.md for upgrade instructions.

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v0.18.0 (Beta 25.01.2022)

Major Changes

Other Changes

Feature Voting

Updating