vapor - 将 PostgreSQL 添加到 vapor 项目

Question

我添加了 .package(url: "https://github.com/vapor-community/postgresql-provider.git", .upToNextMajor(from: "2.1.0")) 到我的 Package.swift 文件，运行 vapor update 并让它重新生成 Xcode 项目。当我添加 PostgreSQLProvider 的导入时，Xcode 找不到它。我已经通过自制软件安装了 postgresql 和 pkg-config。

我正在使用 Xcode 9 和 Swift 4

Answer 1

看起来您正在使用 Swift 4 包管理器。它的 API 已更新，因此您必须显式地将依赖项添加到目标:

// swift-tools-version:4.0

import PackageDescription

let package = Package(
    name: "Project",
    products: [
        .library(name: "App", targets: ["App"]),
        .executable(name: "Run", targets: ["Run"])
    ],
    dependencies: [
        .package(url: "https://github.com/vapor/vapor.git", .upToNextMajor(from: "2.1.0")),
        .package(url: "https://github.com/vapor/fluent-provider.git", .upToNextMajor(from: "1.2.0")),
        .package(url: "https://github.com/vapor-community/postgresql-provider.git", .exact("2.1.0"))
    ],
    targets: [
        .target(name: "App", dependencies: ["Vapor", "FluentProvider", "PostgreSQLProvider"],
                exclude: [
                    "Config",
                    "Public",
                    "Resources",
                ]),
        .target(name: "Run", dependencies: ["App"]),
        .testTarget(name: "AppTests", dependencies: ["App", "Testing"])
    ]
)

见上文，我将PostgreSQLProvider 包添加到App 目标的dependencies 数组中。