CODEWITHSUNDEEP
javascriptnode.jsgruntjs
gregory
gregory

Reputation: 1140

Generate dynamic filenames with grunt.js

Is it possible to generate dynamic filenames outside the built-in grunt tasks (e.g. concat or min)? I tried to use something like <config:concat.dist.dest> or <%= dirs.dest %> as it is described in the docs. But this never gets interpreted / compiled, it just writes out the string.

Update: That's what I tried based on jakub.g's answer. My grunt.js looks like this:

// ... grunt file contents
    jquery: {
      exclude: [],
      version: '1.8.3',
      dest: '../dist/js/jquery-' + grunt.task.directive('<config:jquery.version>') + '.js',
      minify: false
    }, // ... even more grunt file contents

grunt.task.directive('<config:jquery.version>') returns null. So the filename was named jquery-null.js.

I then tried grunt.template.process('<%= grunt.jquery.version %>') and grunt.config.process('<%= grunt.jquery.version %>'), but none of them worked.

Upvotes: 1

Views: 1484

Answers (1)

jakub.g
jakub.g

Reputation: 41248

This is hidden under the hood of Grunt magic in the built-in tasks and in fact not documented clear enough.

You need to use sth like grunt.task.directive(dest) to evaluate things like <config:..>. in a custom task.

For <%= foo %>, have a look at Grunt templates.

Furthermore, wildcards like * and ** and also not expanded by default, if you want to use them in custom tasks, you may use grunt.file.expandFiles().

Upvotes: 1

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