Zmpl v2

Update to Zmpl v2, update demo app to be compatible with v2 syntax. Add
deprecation warning for v1 (v1 is default for now - will force v2 soon).

build.zig

@@ -7,11 +7,20 @@ pub const StaticRequest = @import("src/jetzig.zig").StaticRequest;
 pub const http = @import("src/jetzig/http.zig");
 pub const data = @import("src/jetzig/data.zig");
 pub const views = @import("src/jetzig/views.zig");
+const zmpl_build = @import("zmpl");
 
 pub fn build(b: *std.Build) !void {
     const target = b.standardTargetOptions(.{});
     const optimize = b.standardOptimizeOption(.{});
-    const template_path = b.option([]const u8, "zmpl_templates_path", "Path to templates") orelse "src/app/views/";
+    const template_path_option = b.option([]const u8, "zmpl_templates_path", "Path to templates") orelse
+        "src/app/views/";
+    const template_path: []const u8 = if (std.fs.path.isAbsolute(template_path_option))
+        try b.allocator.dupe(u8, template_path_option)
+    else
+        std.fs.cwd().realpathAlloc(b.allocator, template_path_option) catch |err| switch (err) {
+            error.FileNotFound => "",
+            else => return err,
+        };
 
     const lib = b.addStaticLibrary(.{
         .name = "jetzig",
@@ -28,37 +37,48 @@ pub fn build(b: *std.Build) !void {
     jetzig_module.addImport("mime_types", mime_module);
     lib.root_module.addImport("jetzig", jetzig_module);
 
+    const zmpl_version = b.option(
+        enum { v1, v2 },
+        "zmpl_version",
+        "Zmpl syntax version (default: v1)",
+    ) orelse .v2;
+
+    if (zmpl_version == .v1) {
+        std.debug.print(
+            \\[WARN] Zmpl v1 is deprecated and will soon be removed.
+            \\       Update to v2 by modifying `jetzigInit` in your `build.zig`:
+            \\
+            \\       try jetzig.jetzigInit(b, exe, .{{ .zmpl_version = .v2 }});
+            \\
+            \\       See https://jetzig.dev/documentation.html for information on migrating to Zmpl v2.
+            \\
+        , .{});
+    }
+
     const zmpl_dep = b.dependency(
         "zmpl",
         .{
             .target = target,
             .optimize = optimize,
             .zmpl_templates_path = template_path,
             .zmpl_auto_build = false,
+            .zmpl_version = zmpl_version,
+            .zmpl_constants = try zmpl_build.addTemplateConstants(b, struct {
+                jetzig_view: []const u8,
+                jetzig_action: []const u8,
+            }),
         },
     );
 
     const zmpl_module = zmpl_dep.module("zmpl");
+
     // This is the way to make it look nice in the zig build script
     // If we would do it the other way around, we would have to do
     // b.dependency("jetzig",.{}).builder.dependency("zmpl",.{}).module("zmpl");
     b.modules.put("zmpl", zmpl_dep.module("zmpl")) catch @panic("Out of memory");
 
     const zmd_dep = b.dependency("zmd", .{ .target = target, .optimize = optimize });
 
-    const ZmplBuild = @import("zmpl").ZmplBuild;
-    const ZmplTemplate = @import("zmpl").Template;
-    var zmpl_build = ZmplBuild.init(b, lib, template_path);
-    const TemplateConstants = struct {
-        jetzig_view: []const u8,
-        jetzig_action: []const u8,
-    };
-    const ZmplOptions = struct {
-        pub const template_constants = TemplateConstants;
-    };
-    const manifest_module = try zmpl_build.compile(ZmplTemplate, ZmplOptions);
-    zmpl_module.addImport("zmpl.manifest", manifest_module);
-
     lib.root_module.addImport("zmpl", zmpl_module);
     jetzig_module.addImport("zmpl", zmpl_module);
     jetzig_module.addImport("args", zig_args_dep.module("args"));
@@ -86,17 +106,17 @@ pub fn build(b: *std.Build) !void {
     test_step.dependOn(&run_main_tests.step);
 }
 
-/// Placeholder for potential options we may add in future without breaking
-/// backward-compatibility.
-pub const JetzigInitOptions = struct {};
+/// Build-time options for Jetzig.
+pub const JetzigInitOptions = struct {
+    zmpl_version: enum { v1, v2 } = .v1,
+};
 
 pub fn jetzigInit(b: *std.Build, exe: *std.Build.Step.Compile, options: JetzigInitOptions) !void {
-    _ = options;
     const target = b.host;
     const optimize = exe.root_module.optimize orelse .Debug;
     const jetzig_dep = b.dependency(
         "jetzig",
-        .{ .optimize = optimize, .target = b.host },
+        .{ .optimize = optimize, .target = target, .zmpl_version = options.zmpl_version },
     );
     const jetzig_module = jetzig_dep.module("jetzig");
     const zmpl_module = jetzig_dep.module("zmpl");
@@ -159,5 +179,6 @@ pub fn jetzigInit(b: *std.Build, exe: *std.Build.Step.Compile, options: JetzigIn
     exe_static_routes.root_module.addImport("jetzig_app", &exe.root_module);
 
     const run_static_routes_cmd = b.addRunArtifact(exe_static_routes);
+    run_static_routes_cmd.expectExitCode(0);
     exe.step.dependOn(&run_static_routes_cmd.step);
 }

build.zig.zon

@@ -7,8 +7,8 @@
             .hash = "1220bfc5c29bc930b5a524c210712ef65c6cde6770450899bef01164a3089e6707fa",
         },
         .zmpl = .{
-            .url = "https://github.com/jetzig-framework/zmpl/archive/ffdbd3767da28d5ab07c1a786ea778152d2f79f6.tar.gz",
-            .hash = "12202cf05fd4ba2482a9b4b89c632b435310a76ac501b7a3d87dfd41006748dd138d",
+            .url = "https://github.com/jetzig-framework/zmpl/archive/d907a96ffa28721477f5c8895732a4a9396276f5.tar.gz",
+            .hash = "1220e96969db44c451577e6a59a0d99af73b4370781c9361e3ea7e0d6f24c7f13abb",
         },
         .args = .{
             .url = "https://github.com/MasterQ32/zig-args/archive/01d72b9a0128c474aeeb9019edd48605fa6d95f7.tar.gz",

demo/build.zig

@@ -18,7 +18,7 @@ pub fn build(b: *std.Build) !void {
 
     // All dependencies **must** be added to imports above this line.
 
-    try jetzig.jetzigInit(b, exe, .{});
+    try jetzig.jetzigInit(b, exe, .{ .zmpl_version = .v2 });
 
     b.installArtifact(exe);
 

demo/src/app/views/iguanas/index.zmpl

@@ -1,6 +1,7 @@
 <div>
-  var it = zmpl.value.?.array.iterator();
-  while (it.next()) |iguana| {
-    <div>{(iguana.string.value)}</div>
+@zig {
+  for (zmpl.items(.array)) |iguana| {
+    <div>{{iguana}}</div>
   }
+}
 </div>

demo/src/app/views/init.zig

@@ -25,10 +25,7 @@ pub fn index(request: *jetzig.Request, data: *jetzig.Data) !jetzig.View {
     // param. JSON data is also accepted when the `content-type: application/json` header is
     // present.
     const params = try request.params();
-
-    if (params.get("message")) |value| {
-        try root.put("message_param", value);
-    }
+    try root.put("message_param", params.get("message"));
 
     // Set arbitrary response headers as required. `content-type` is automatically assigned for
     // HTML, JSON responses.

demo/src/app/views/init/_content.zmpl

@@ -1,5 +1,7 @@
-// Renders the `message` response data value.
-<h3 class="message text-[#39b54a]">{.message}</h3>
+@args message: *ZmplValue
+
+<!-- Renders the `message` response data value. -->
+<h3 class="message text-[#39b54a]">{{message}}</h3>
 
 <div><img class="p-3 mx-auto" src="/jetzig.png" /></div>
 

demo/src/app/views/init/index.zmpl

@@ -9,12 +9,14 @@
 
   <body>
     <div class="text-center pt-10 m-auto">
-      // If present, renders the `message_param` response data value, add `?message=hello` to the
-      // URL to see the output:
-      <h2 class="param text-3xl text-[#f7931e]">{.message_param}</h2>
+      <!-- If present, renders the `message_param` response data value, add `?message=hello` to the
+           URL to see the output: -->
+      <h2 class="param text-3xl text-[#f7931e]">{{.message_param}}</h2>
 
-      // Renders `src/app/views/init/_content.zmpl` with the same template data available:
-      <div>{^init/content}</div>
+      <!-- Renders `src/app/views/init/_content.zmpl`, passing in the `message` field from template data. -->
+      <div>
+        @partial init/content(message: .message)
+      </div>
     </div>
   </body>
 </html>

demo/src/app/views/layouts/application.zmpl

@@ -9,7 +9,7 @@
   </head>
 
   <body>
-    <main>{zmpl.content}</main>
+    <main>{{zmpl.content}}</main>
     <script src="/prism.js"></script>
   </body>
 </html>

demo/src/app/views/nested/route/markdown.md

@@ -0,0 +1,7 @@
+# Dynamic Markdown Routes
+
+_Markdown_ can be stored in any path in `src/app/views/` and _Jetzig_ will automatically render it if it matches a URI.
+
+This _Markdown_ page can be accessed at `/nested/route/markdown.html` and `/nested/route/markdown`.
+
+This functionality is particularly useful if you want to load _Markdown_ content with [htmx](https://htmx.org/).

demo/src/app/views/quotes/get.zmpl

@@ -1,2 +1,2 @@
-<div>"{.quote}"</div>
-<div><b>--{.author}</b></div>
+<div>"{{.quote}}"</div>
+<div><b>--{{.author}}</b></div>

demo/src/app/views/quotes/post.zmpl

@@ -1 +1 @@
-<div>{.param}</div>
+<div>{{.param}}</div>

demo/src/app/views/root/_quotes.zmpl

@@ -1,5 +1,6 @@
+@args message: *ZmplValue
 <div>
-  <h1 class="text-3xl text-center p-3 pb-6 font-bold">{.message}</h1>
+  <h1 class="text-3xl text-center p-3 pb-6 font-bold">{{message}}</h1>
 </div>
 
 <button hx-get="/quotes/random" hx-trigger="click" hx-target="#quote" class="bg-[#39b54a] text-white font-bold py-2 px-4 rounded">Click Me</button>

demo/src/app/views/root/index.zmpl

@@ -1,8 +1,11 @@
 <div class="text-center pt-10 m-auto">
+
   <div><img class="p-3 mx-auto" src="/jetzig.png" /></div>
 
-  // Renders `src/app/views/root/_quotes.zmpl`:
-  <div>{^root/quotes}</div>
+  <!-- Renders `src/app/views/root/_quotes.zmpl`: -->
+  <div>
+    @partial root/quotes(message: .message)
+  </div>
 
   <div>
     <a href="https://github.com/jetzig-framework/zmpl">

demo/zmpl_options.zig

@@ -0,0 +1 @@
+hello

src/GenerateRoutes.zig

@@ -181,6 +181,8 @@ fn writeRoute(self: *Self, writer: std.ArrayList(u8).Writer, route: Function) !v
     std.mem.replaceScalar(u8, view_name, '\\', '/');
     defer self.allocator.free(view_name);
 
+    const template = try std.mem.concat(self.allocator, u8, &[_][]const u8{ view_name, "/", route.name });
+
     std.mem.replaceScalar(u8, module_path, '\\', '/');
 
     const output = try std.fmt.allocPrint(self.allocator, output_template, .{
@@ -190,7 +192,7 @@ fn writeRoute(self: *Self, writer: std.ArrayList(u8).Writer, route: Function) !v
         if (route.static) "static" else "dynamic",
         if (route.static) "true" else "false",
         uri_path,
-        full_name,
+        template,
         module_path,
         try std.mem.join(self.allocator, ", \n", route.params.items),
     });

src/jetzig/http/Query.zig

@@ -107,7 +107,7 @@ fn dataValue(self: Query, value: ?[]const u8) *jetzig.data.Data.Value {
     if (value) |item_value| {
         return self.data.string(item_value);
     } else {
-        return self.data._null();
+        return jetzig.zmpl.Data._null(self.data.getAllocator());
     }
 }
 

src/jetzig/http/Server.zig

@@ -232,7 +232,7 @@ fn renderMarkdown(
         );
         defer self.allocator.free(prefixed_name);
 
-        if (zmpl.manifest.find(prefixed_name)) |layout| {
+        if (zmpl.find(prefixed_name)) |layout| {
             rendered.view.data.content = .{ .data = markdown_content };
             rendered.content = try layout.render(rendered.view.data);
         } else {
@@ -249,7 +249,7 @@ fn renderView(
     self: *Self,
     route: *jetzig.views.Route,
     request: *jetzig.http.Request,
-    template: ?zmpl.manifest.Template,
+    template: ?zmpl.Template,
 ) !RenderedView {
     // View functions return a `View` to help encourage users to return from a view function with
     // `return request.render(.ok)`, but the actual rendered view is stored in
@@ -290,18 +290,18 @@ fn renderView(
 fn renderTemplateWithLayout(
     self: *Self,
     request: *jetzig.http.Request,
-    template: zmpl.manifest.Template,
+    template: zmpl.Template,
     view: jetzig.views.View,
     route: *jetzig.views.Route,
 ) ![]const u8 {
     try addTemplateConstants(view, route);
 
     if (request.getLayout(route)) |layout_name| {
         // TODO: Allow user to configure layouts directory other than src/app/views/layouts/
-        const prefixed_name = try std.mem.concat(self.allocator, u8, &[_][]const u8{ "layouts_", layout_name });
+        const prefixed_name = try std.mem.concat(self.allocator, u8, &[_][]const u8{ "layouts", "/", layout_name });
         defer self.allocator.free(prefixed_name);
 
-        if (zmpl.manifest.find(prefixed_name)) |layout| {
+        if (zmpl.find(prefixed_name)) |layout| {
             return try template.renderWithLayout(layout, view.data);
         } else {
             try self.logger.WARN("Unknown layout: {s}", .{layout_name});