Headless allows you to render JSON from TYPO3 content. You can customize output by changing types, names and nesting of fields.

This extension provides backend part (JSON API) for TYPO3 PWA solution. Second part is a JavaScript application nuxt-typo3 which consumes JSON API and renders the content using Vue.js and Nuxt. See frontend documentation here: https://typo3-initiatives.github.io/nuxt-typo3/

If you have any questions just drop a line in #initiative-pwa Slack channel.

• JSON API for content elements
• JSON API for navigation, layouts
• taking into account all language/translation configuration (e.g. fallback)
• easily extensible with custom fields or custom CE's
• basic support for EXT:form
• support for felogin (comming soon)

• headless support for EXT:news https://github.com/TYPO3-Initiatives/headless_news
• headless support for EXT:solr https://github.com/TYPO3-Initiatives/headless_solr
• headless support for EXT:powermail https://github.com/TYPO3-Initiatives/headless_powermail
• headless support for EXT:gridelements https://github.com/itplusx/headless_gridelements

Extension requires TYPO3 in version at least 9.5.

If you want to take a look at working demo including frontend, backend and demo data, use our DDEV based demo project here: https://github.com/TYPO3-Initiatives/pwa-demo

Install extension using composer
composer require friendsoftypo3/headless

Then, you should include extension typoscript template, and you are ready to go. Also, please remember to don't use fluid styled content on the same page tree together with ext:headless.

Documentation

In headless extension we implemented new JSON Content Object, which allows you to specify what fields you want to output, and how they will look. First of all, let's take a look at simple example

lib.page = JSON
lib.page {
  fields {
    header = TEXT
    header {
      field = header
    }
  }
}

Output

{
    "header" : "headerFieldValue"
}

in addition, keyword fields allow you to nest multiple times fields in json, e.g.

lib.page = JSON
lib.page {
  fields {
    data {
      fields {
        foo = TEXT
        foo {
          field = bar
        }

        foo1 = TEXT
        foo1 {
          field = bar1
        }
      }
    }
  }
}

Output

{
    "data": [
        {
            "foo": "bar",
            "foo1": "bar1"
        }
    ]
}

We introduce new simple content objects to improve JSON API response for frontend developers. We can set correct property types, so frontend does not have to deal with string values for fields with numeric values or field that should be true/false.

lib.page = JSON
lib.page {
  fields {
    data {
      fields {
        foo = INT
        foo {
          # db value of foo_field = 1
          field = foo_field
        }
        bar = BOOL
        bar {
          # db value of bar_field = 0
          field = bar_field
        }
      }
    }
  }
}

Output

{
    "data": [
        {
            "foo": 1,
            "bar": false
        }
    ]
}

You can override every field in output using typoscript. This extension allows you to use standard typoscript objects such as TEXT, COA, CASE.

You can use Data Processors just like in FLUIDTEMPLATE Content Object, e.g.

lib.languages = JSON
lib.languages {
  dataProcessing {
    10 = TYPO3\CMS\Frontend\DataProcessing\LanguageMenuProcessor
    10 {
      languages = auto
      as = languages
    }
  }
}

To change the setting for this extension feature either use Localconfiguration.php: or AdditionalConfiguration.php:

headless.frontendUrls or FrontendBaseUrlInPagePreview (deprecated)

This feature toggle extends current SiteConfiguration (and it's variants) with new field for Frontend Url (url frontend of PWA app). This new field is used when there is a need to preview a page such as: "view" module or right click on a page + show, or the 'eye' icon in page view & allow generating proper cross-domain links for headless instance.

$GLOBALS['TYPO3_CONF_VARS']['SYS']['features']['headless.frontendUrls'] = true;

headless.storageProxy

Enable ability to set storage proxy in site configuration (and it's variants) & serve files via proxy from same domain

Feature flag requires TYPO3 >= 10.4.10

$GLOBALS['TYPO3_CONF_VARS']['SYS']['features']['headless.storageProxy'] = true;

headless.nextMajor

Enable new APIs/behaviors of ext:headless, but contains breaking changes & require upgrade path for you application. Use with caution.

$GLOBALS['TYPO3_CONF_VARS']['SYS']['features']['headless.nextMajor'] = true;

Development for this extension is happening as part of the TYPO3 PWA initiative, see https://typo3.org/community/teams/typo3-development/initiatives/pwa/ If you have any questions, join #initiative-pwa Slack channel.

A special thanks goes to macopedia.com company, which is sponsoring development of this solution.

• Łukasz Uznański (Macopedia)
• Adam Marcinkowski (Macopedia)
• Vaclav Janoch (ITplusX)