如何使用Gulp和gulp-data从单个jade模板生成多个html文件

Question

我正在使用Gulp创建静态网站生成器。我想知道如何将每个数据（JSON）传输到单个jade模板中以生成多个html文件。这是gulp'模板'任务：

gulp.task('templates', function () {
  'use strict';

  var myData = JSON.parse(fs.readFileSync('./_assets/data/content.json'));

  var myPages = myData.pages;
  var myPosts = myData.posts;

  gulp.src('./_assets/templates/index.jade')
    .pipe(data(function (file) {
      return myData;
    }))
    .pipe(jade())
    .pipe(minifyhtml())
    .pipe(gulp.dest('./_site/'))
    .pipe(connect.reload());

  // this is my dumb attempt at trying to 
  // output each piece of data and than 
  // have jade create an html file...
  for (var i in myPages) {
    gulp.src('./_assets/templates/page.jade')
    .pipe(data(function (file) {
      return myPages[i];
    }))
    .pipe(jade())
    .pipe(minifyhtml())
    .pipe(gulp.dest('./_site/'))
    .pipe(connect.reload());    
  }

});

function applyTemplate(data, template) {
  'use strict';
  // I was thinking maybe another function could 
  // take care of applying a template to each json 
  // data object in both 'posts' or 'pages'
  return;
}

这是从我的所有内容生成的数据，并放入名为content.json的JSON结构化文件中

{
  "pages": {
    "projects": {
      "title": "projects",
      "body": ""
    },
    "another": {
      "title": "another",
      "body": ""
    },
    "about": {
      "title": "about",
      "body": "<p>This page is dedicated to the about me section of the site :). Lorem ipsum dolor sit amet, consectetur adipisicing elit. Non in totam suscipit laborum nam nobis. Mollitia, adipisci, iusto impedit molestiae, sapiente numquam laborum dignissimos quam animi eius ipsum eaque voluptate. Lorem ipsum dolor sit amet, consectetur adipisicing elit. Nisi, possimus quia. Deleniti itaque facilis eius, possimus sint molestiae repellendus, repellat, rerum quis aliquam voluptate quidem voluptas dignissimos, perferendis molestias sequi. Lorem ipsum dolor sit amet, consectetur adipisicing elit. Quisquam reiciendis corporis, molestiae tempora similique laudantium eaque fuga, fugit delectus molestias omnis incidunt nostrum expedita! Aliquid temporibus eum dolor, beatae saepe.</p>\n<p>Lorem ipsum dolor sit amet, consectetur adipisicing elit. Dignissimos, commodi, quos. Ratione laborum assumenda aliquam soluta consequatur alias, recusandae corporis, quidem eveniet quo natus nulla voluptates praesentium aperiam ducimus ea!</p>\n<p>Lorem ipsum dolor sit amet, consectetur adipisicing elit. Quae numquam, doloremque dicta magni quaerat consequatur culpa quisquam dolore. Modi at rerum reiciendis esse, deserunt sit culpa repudiandae repellat, id earum. Lorem ipsum dolor sit amet, consectetur adipisicing elit. Asperiores sunt officiis fugit dolor quisquam aut eveniet odio delectus quam quasi debitis quas, eligendi consequatur iste aperiam minus nemo soluta a.</p>\n"
    },
    "page": {
      "title": "page",
      "body": ""
    },
    "test": {
      "title": "test",
      "body": ""
    }
  },
  "posts": {
    "whatsnext": {
      "title": "What's Next?!",
      "date": "04/01/2015",
      "published": true,
      "body": "<p>So I need to come up with some kind of plan of attack towards this project. Ive mostly been just messing around with gulp im going to list out what needs to be done next. Bare with me...(talking to myself?).</p>\n<h3 id=\"things-to-do-\">Things to do:</h3>\n<ul>\n<li>Instead of converting to json just extract front matter and post .md--&gt;.html transfer in the templates</li>\n<li>organize folder structure to better reflect this project and change the templating system to something simple project:<ul>\n<li>_assets/<ul>\n<li>scripts/</li>\n<li>templates/</li>\n<li>styles/</li>\n<li>images/</li>\n<li>etc.../</li>\n</ul>\n</li>\n<li>_content/<ul>\n<li>posts/</li>\n<li>pages/</li>\n</ul>\n</li>\n<li>.gitignore</li>\n<li>gulpfile.js</li>\n<li>prose.yml</li>\n<li>travis.yml</li>\n<li>package.json</li>\n<li>readme.md</li>\n</ul>\n</li>\n<li>Create a simple, global cli to &quot;scaffold&quot; sites that utilize the scope of this project. Some helpful links:<ul>\n<li><a href=\"http://tutorialzine.com/2014/09/creating-your-first-node-js-command-line-application/\">http://tutorialzine.com/2014/09/creating-your-first-node-js-command-line-application/</a></li>\n<li><a href=\"http://cruft.io/posts/node-command-line-utilities\">http://cruft.io/posts/node-command-line-utilities</a></li>\n</ul>\n</li>\n<li>git r done</li>\n</ul>\n"
    },
    "itsalive": {
      "title": "Its Alive!!!",
      "date": "2/24/2015",
      "published": true,
      "body": "<p>My site is finally coming together. I need to check out more on the gulp subject and get everything working correctly. Some helpful links will be <a href=\"http://blog.crushingpennies.com/a-static-site-generator-with-gulp-proseio-and-travis-ci.html\">gulp + prose</a> and another one: <a href=\"http://www.rioki.org/2014/06/09/jekyll-to-gulp.html\">from jekyll to gulp</a>. And now for a weird baby.</p>\n<p><img src=\"../../_assets/images/babycreep.gif\" alt=\"dat baby creep\"></p>\n<p>The goal of this project is to create something that resembles a cms without all of the bloat. I&#39;ve been working with Drupal and its a very powerful tool but it comes at a price for developers. I&#39;m really wanting to cut out php and myself and focus on what the web wants and that is html, css, and JavaScript... nothing more...except for all the other things written in node(js) and maybe some ruby</p>\n"
    },
    "secondpost": {
      "title": "Test",
      "date": "2/24/2015",
      "body": "<p>Lorem ipsum dolor sit amet, consectetur adipisicing elit. Ipsam obcaecati expedita dolorem unde nemo, veritatis quidem velit perspiciatis illum quasi ratione. Provident et reiciendis numquam maxime, alias, aliquid harum omnis. Lorem ipsum dolor sit amet, consectetur adipisicing elit. Modi optio nostrum, incidunt aut! Illo, architecto, numquam? Neque commodi ex tempora. Dolorem rem omnis nulla ab blanditiis saepe at id, dolore.</p>\n<p>Lorem ipsum dolor sit amet, consectetur adipisicing elit. Molestias eius officia officiis quos, obcaecati tempora suscipit optio rem. Deserunt qui, quidem. Fuga hic dolor sit voluptatem qui, dignissimos. Consequuntur, sint!</p>\n<p>Lorem ipsum dolor sit amet, consectetur adipisicing elit. In dignissimos voluptatem nemo quae neque a dolorum provident culpa error corporis, fuga alias corrupti, quaerat illum facere, et repellat voluptatibus similique? Lorem ipsum dolor sit amet, consectetur adipisicing elit. Asperiores veniam impedit esse iure, sint repellat facilis. Rerum excepturi eos hic incidunt quam, quidem sit odio dignissimos tenetur neque beatae illo.</p>\n"
    }
  }
}

正如您所看到的，来自'content.json'的数据很容易被解析并通过管道传输到我的jade模板中。我不知道如何使用数据生成多个html文件，并为每种类型的数据使用一个模板文件

示例：'pages.jade'将“应用”到content.json文件中的每个页面页面，并作为单独的html文件输出，如'about.html'，'anotherpage.html'。

如果您需要更多信息，请告诉我，非常感谢您花时间查看我的问题！

• 克里斯

Answer 1

我提出了两种可能的解决方案。我使用的是swig，但对于任何其他模板语言都应该是相同的。

第一个解决方案可能看起来有些“hackish＆＃39;”，因为它使用符号链接来模拟＆＃34;每个JSON文件的HTML模板。 也就是说，对于我们想要创建的每个HTML文件，我们都有一个符号链接指向我们的单个swig模板文件。因此，我们有product-A.html -> product.swig.tpl，product-B.html -> product.swig.tpl，product-C.html -> product.swig.tpl等等（所有符号链接和swig模板都存储在_assets/html/文件夹中。
然后，我们在_assets/data/文件夹（product-A.json，product-B.json，product-C.json等文件夹中提供了JSON文件。

代码：

var gulp = require('gulp');
var swig = require('gulp-swig');
var data = require('gulp-data');
var path = require('path');

var config = {
        html: {
          src: '_assets/html/*.html',
          dest: '_build/html'
        },
        data: {
          src: '_assets/data/*.json'
        }
      }

var getJsonData = function(file) {
  return require('./data/' + path.basename(file.path, path.extname(file.path)) + '.json');
};

gulp.task('templates', function() {
  return gulp.src(config.html.src)
    .pipe(data(getJsonData))
    .pipe(swig())
    .pipe(gulp.dest(config.html.dest))
});

第二个解决方案使用gulp-foreach 在此示例中，_assets/html/中有一个模板（例如，product.html），然后，我们在_assets/data/上有一堆JSON文件（例如，product-A.json ，product-B.json，product-C.json等等。

var gulp = require('gulp');
var swig = require('gulp-swig');
var data = require('gulp-data');
var foreach = require('gulp-foreach');
var rename = require('gulp-rename');
var path = require('path');

var config = {
        html: {
          src: '_assets/html/*.html',
          dest: '_build/html'
        },
        data: {
          src: '_assets/data/*.json'
        }
      }

var getJsonData = function(file) {
  return require(file.path);
};

gulp.task('templates', function() {
  return gulp.src(config.data.src)
    .pipe(foreach(function(stream, file){
        var jsonFile = file; // We create this 'jsonFile' variable because the 'file' variable is overwritten on the next gulp.src.
        var jsonBasename = path.basename(jsonFile.path, path.extname(jsonFile.path));
        return gulp.src(config.html.src)
          .pipe(data(getJsonData(jsonFile)))
          .pipe(swig())
          .pipe(rename(function(htmlFile) {
            htmlFile.basename = jsonBasename;
          }))
          .pipe(gulp.dest(config.html.dest))
      })
    )
});

因此，基本上，我们使用我们的JSON文件集创建一个流，并且对于每个文件，我们选取​​单个模板，从我们的JSON文件中获取数据并将其应用于模板。然后，我们在将缓冲区输出到目标之前重命名缓冲区，以避免每个循环在同一文件上写入（覆盖）。 然后，我们最终在_build/html上发布了大量HTML文件：product-A.html，product-C.html，product-C.html