Server-side template rendering using Handlebars.
npm install handlebars-webpack-plugin --save-dev
Usage
In your webpack config register and setup the handlebars plugin
const path = require("path");
const HandlebarsPlugin = require("handlebars-webpack-plugin");
const webpackConfig = {
plugins: [
new HandlebarsPlugin({
// path to hbs entry file(s). Also supports nested directories if write path.join(process.cwd(), "app", "src", "**", "*.hbs"),
entry: path.join(process.cwd(), "app", "src", "*.hbs"),
// output path and filename(s). This should lie within the webpacks output-folder
// if ommited, the input filepath stripped of its extension will be used
output: path.join(process.cwd(), "build", "[name].html"),
// you can also add a [path] variable, which will emit the files with their relative path, like
// output: path.join(process.cwd(), "build", [path], "[name].html"),
// data passed to main hbs template: `main-template(data)`
data: require("./app/data/project.json"),
// or add it as filepath to rebuild data on change using webpack-dev-server
data: path.join(__dirname, "app/data/project.json"),
// globbed path to partials, where folder/filename is unique
partials: [
path.join(process.cwd(), "app", "src", "components", "*", "*.hbs")
],
// register custom helpers. May be either a function or a glob-pattern
helpers: {
nameOfHbsHelper: Function.prototype,
projectHelpers: path.join(process.cwd(), "app", "helpers", "*.helper.js")
},
// hooks
// getTargetFilepath: function (filepath, outputTemplate) {},
// getPartialId: function (filePath) {}
onBeforeSetup: function (Handlebars) {},
onBeforeAddPartials: function (Handlebars, partialsMap) {},
onBeforeCompile: function (Handlebars, templateContent) {},
onBeforeRender: function (Handlebars, data, filename) {},
onBeforeSave: function (Handlebars, resultHtml, filename) {},
onDone: function (Handlebars, filename) {}
})
]
};Partial ids are registered by parentFolder/filename (without file extensions)
Use handlebars in your main and partials like, i.e.
Options
target filepaths
Per default, the generated filepath of the html-results is defined by the output-property in the plugin-options. To changed the output folder and name, you can pass your custom filepath-helper to the plugin-options like
{
/**
* Modify the default output path of each entry-template
* @param {String} filepath - the source of the template
* @param {String} outputTemplate - the filepath template defined in `output`
* @param {String} rootFolder - the filepaths rootFolder
* @return {String} final path, where the rendered html-file should be saved
*/
getTargetFilepath: function getTargetFilepath(filepath, outputTemplate, rootFolder) {
const fileName = path.basename(filepath).replace(path.extname(filepath), "");
return outputTemplate.replace("[name]", fileName);
};
}You can find the default implementation in utils/getTargetFilepath.
partial ids
Per default, partials are identified with folder/filename in a hbs-template. e.g. a file in app/partials/page/header.hbs will be registered under page/header and can be included with
To change the partial's id you can pass a custom partial-generator to the plugin-options like
{
/**
* Modify the hbs partial-id created for a loaded partial
* @param {String} filePath - filePath to the loaded partial
* @return {String} hbs-partialId, per default folder/partialName is used
*/
getPartialId: function (filePath) {
return filePath.match(/\/([^/]+\/[^/]+)\.[^.]+$/).pop();
}
}Html Webpack Plugin
Use the html-webpack-plugin to generate partials, that are dynamically registered to the handlebars-webpack-plugin
- the
HtmlWebpackPluginshould be placed before the HandlebarsWebpackPlugin - multiple HtmlWebpackPlugins may be used
- per default, the partials get registered to
html/<outputfilename>, i.e. a filename/dist/partials/head.hbswill be registered ashtml/headto handlebars
plugins: [
new HtmlWebpackPlugin({
title: "Generic Head Title",
// the template you want to use
template: path.join(__dirname, "src", "generatedpartial", "head.hbs"),
// the output file name
filename: path.join(__dirname, "dist", "partials", "head.hbs"),
inject: "head"
}),
new HandlebarsWebpackPlugin({
htmlWebpackPlugin: {
enabled: true, // register all partials from html-webpack-plugin, defaults to `false`
prefix: "html", // where to look for htmlWebpackPlugin output. default is "html"
HtmlWebpackPlugin // optionally: pass in HtmlWebpackPlugin if it cannot be resolved
},
entry: path.join(process.cwd(), "src", "hbs", "*.hbs"),
output: path.join(process.cwd(), "dist", "[name].html"),
partials: [
path.join(process.cwd(), "html",/* <-- this should match htmlWebpackPlugin.prefix */ "*", "*.hbs"),
path.join(process.cwd(), "src", "hbs", "*", "*.hbs")
]
})
]Utilities
Merging input-data
In case you have several json-files that need to be passed to handlebars-compilation, you can build this within your webpack-configuration file. A simple helper can be found in utils/mergeJSON.js,
which finds all json files and build a dataObject with { <filename>: <data> }. Example:
const mergeJSON = require('handlebars-webpack-plugin/utils/mergeJSON');
const projectData = mergeJSON(path.join(__dirname, "data/**/*.json"));
// ...
new HandlebarsPlugin({
// ...
data: projectData
});For custom merge behaviour you can add your own merge-helper, following the implementation from utils/mergeJSON.js.
Contributors
