我对 vapor/leaf/html 的理解有几个主要的差距。我正在使用 vapor 的 beta 分支创建的“todo”示例。
首先，我制作了自己的流畅模型(没有我知道的问题):
import FluentSQLite
import Vapor
final class affordatmodel: SQLiteModel {
var id: Int?
var propertyCost: String
var targetEquity: String
var interestRate: String
var amortization: String
var sponsor1: String
var sponsor2: String
var rent: String
var rentInflation: String
var propertyTaxes: String
var propertyTaxesInflation: String
var strataFees: String
var strataFeesInflation: String
init(propertyCost: String, targetEquity: String, interestRate: String, amortization: String, sponsor1: String, sponsor2: String, rent: String, rentInflation: String, propertyTaxes: String, propertyTaxesInflation: String, strataFees: String, strataFeesInflation: String) {
self.propertyCost = propertyCost
self.targetEquity = targetEquity
self.interestRate = interestRate
self.amortization = amortization
self.sponsor1 = sponsor1
self.sponsor2 = sponsor2
self.rent = rent
self.rentInflation = rentInflation
self.propertyTaxes = propertyTaxes
self.propertyTaxesInflation = propertyTaxesInflation
self.strataFees = strataFees
self.strataFeesInflation = strataFeesInflation
}
}
/// Allows to be used as a dynamic migration.
extension affordatmodel: Migration { }
/// Allows to be encoded to and decoded from HTTP messages.
extension affordatmodel: Content { }
/// Allows to be used as a dynamic parameter in route definitions.
extension affordatmodel: Parameter { }
然后我创建一个实例并将其发送到叶模板:
let defaultData = affordatmodel(propertyCost: "700000", targetEquity: "300000", interestRate: "1", amortization: "20", sponsor1: "500000", sponsor2: "200000", rent: "1200", rentInflation: "1", propertyTaxes: "8000", propertyTaxesInflation: "1", strataFees: "0", strataFeesInflation: "0")
return leaf.render("welcome", ["affordat": defaultData])
我的 Leaf 模板成功地使用默认数据填充了 html(此处显示正文):
<body class="container">
<h1>Payment and Principal Calculations</h1>
<form action="/affordat" method="POST">
<div class="form-group">
<label for="propertyCost">Property Cost</label>
<input type="number" class="form-control" name="propertyCost" placeholder="#(affordat.propertyCost)">
</div>
<div class="form-group">
<label for="targetEquity">Target Equity</label>
<input type="number" class="form-control" name="targetEquity" placeholder="#(affordat.targetEquity)">
</div>
<div class="form-group">
<label for="interestRate">Interest Rate</label>
<input type="number" class="form-control" name="interestRate" placeholder="#(affordat.interestRate)">
</div>
<div class="form-group">
<label for="amortization">Amortization (years)</label>
<input type="number" class="form-control" name="amortization" placeholder="#(affordat.amortization)">
</div>
<div class="form-group">
<label for="sponsor1">Sponsor 1 Funds</label>
<input type="number" class="form-control" name="sponsor1" placeholder="#(affordat.sponsor1)">
</div>
<div class="form-group">
<label for="sponsor2">Sponsor 2 Funds</label>
<input type="number" class="form-control" name="sponsor2" placeholder="#(affordat.sponsor2)">
</div>
<div class="form-group">
<label for="rent">Rent</label>
<input type="number" class="form-control" name="rent" placeholder="#(affordat.rent)">
</div>
<div class="form-group">
<label for="rentInflation">Rent Inflation (will be used exactly)</label>
<input type="number" class="form-control" name="rentInflation" placeholder="#(affordat.rentInflation)">
</div>
<div class="form-group">
<label for="propertyTaxes">Property Taxes (first year est.)</label>
<input type="number" class="form-control" name="propertyTaxes" placeholder="#(affordat.propertyTaxes)">
</div>
<div class="form-group">
<label for="propertyTaxesInflation">Property Taxes Inflation (est.)</label>
<input type="number" class="form-control" name="propertyTaxesInflation" placeholder="#(affordat.propertyTaxesInflation)">
</div>
<div class="form-group">
<label for="strataFees">Strata Fees (first year est.)</label>
<input type="number" class="form-control" name="strataFees" placeholder="#(affordat.strataFees)">
</div>
<div class="form-group">
<label for="strataFeesInflation">Strata Fees Inflation (est.)</label>
<input type="number" class="form-control" name="strataFeesInflation" placeholder="#(affordat.strataFeesInflation)">
</div>
<input type="hidden" name="_csrf" value="{{csrfToken}}">
<button type="submit" class="btn btn-primary">Refresh Calculations</button>
</form>
</body>
太好了，所以我知道如何将流畅的数据转换为 HTML。我的问题是我不知道如何取回它。当“发布”发生时，数据似乎没有传递给 Controller 。我的路线是:
router.post("affordat", use: affordatController.create)
我的 Controller 的相关部分如下所示:
import Vapor
final class AffordatController {
func create(_ req: Request) throws -> Future<affordatmodel> {
return try req.content.decode(affordatmodel.self).flatMap(to: affordatmodel.self) { affordatmodel1 in
return affordatmodel1.save(on: req)
}
}
}
这显示了我的一个模型，带有 ID #，但没有数据。我有点理解为什么，因为我似乎并没有真正将发布数据发送到 Controller 。 我应该如何将 POST 数据发送到 Controller ？问题出在我的叶子模板、我的路由还是我的 Controller 中？
最佳答案
看起来应该可以。您可以在浏览器的网络检查器中检查发送到服务器的数据。确保保留日志，这样您就可以看到 POST 请求和发送到服务器的数据。
如果您在请求中的每个点都设置断点，您可以看到数据是什么。
顺便说一句，看起来您正在提交一个空表单，所以它只是将所有内容都填入空白字符串。您的意思是在表单输入中使用 value 而不是 placeholder 吗？值将为用户预填充数据，占位符将向用户显示值作为建议，但不会在表单提交中发送数据。
关于swift - 如何使用 POST/表单叶模板传递数据？，我们在Stack Overflow上找到一个类似的问题： https://stackoverflow.com/questions/49594004/