Created
June 25, 2018 21:04
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Editable form example with Leaf 3
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| <!DOCTYPE html> | |
| <html> | |
| <head> | |
| <title>No JS form example</title> | |
| </head> | |
| <body> | |
| <form action="/form" method="post"> | |
| #for(s in parts) { | |
| <div> | |
| <input name="parts[]" value="#(s)"></input> | |
| <input type="submit" value="-" formaction="/form/delete/#(index)"></input> | |
| </div> | |
| } | |
| <input type="submit" formaction="/form/add" value="Add row"></input> | |
| <input type="submit" value="Save"></input> | |
| </form> | |
| </body> | |
| </html> |
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| import Foundation | |
| import Vapor | |
| private struct TestForm: Content { | |
| // An empty form would cause a decoding error if this field is not Optional... | |
| // Hopefully a future version of Swift will allow default values in decoders | |
| let parts: [String]? | |
| } | |
| public func routes(_ router: Router) throws { | |
| router.get("form") { (req: Request) -> Future<View> in | |
| let cache = try req.make(MemoryKeyedCache.self) | |
| let renderer = try req.make(ViewRenderer.self) | |
| return cache.get("form", as: TestForm.self) | |
| .then { form in renderer.render("index", form ?? TestForm(parts: [])) } | |
| } | |
| router.post("form") { (req: Request) -> Future<Response> in | |
| let cache = try req.make(MemoryKeyedCache.self) | |
| return try req.content.decode(TestForm.self) | |
| .then { cache.set("form", to: $0) } | |
| .transform(to: req.redirect(to: "/form")) | |
| } | |
| router.post("form/add") { (req: Request) -> Future<Response> in | |
| let cache = try req.make(MemoryKeyedCache.self) | |
| return try req.content.decode(TestForm.self) | |
| .then { form in cache.set("form", to: TestForm(parts: (form.parts ?? []) + [""])) } | |
| .transform(to: req.redirect(to: "/form")) | |
| } | |
| router.post("form/delete", Int.parameter) { (req: Request) -> Future<Response> in | |
| let index = try req.parameters.next(Int.self) | |
| let cache = try req.make(MemoryKeyedCache.self) | |
| return try req.content.decode(TestForm.self) | |
| .then { (form: TestForm) -> Future<Void> in | |
| guard var parts = form.parts, index >= 0, index < parts.count else { | |
| return cache.set("form", to: form) | |
| } | |
| parts.remove(at: index) | |
| return cache.set("form", to: TestForm(parts: parts)) | |
| } | |
| .transform(to: req.redirect(to: "/form")) | |
| } | |
| } |
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