🎩 What? Why?

When linking Decidim instance to social media image is usually broken (see screenshot below) because it doesn't include base url (e.g. https://meta.decidim.org). Correct usage of social meta tags is described for example in Twitter docs.

Testing

1. Go to any decidim instance (e.g. https://meta.decidim.org/)
2. Open console (F12 in Firefox)
3. Type these commands

document.querySelector("meta[name='twitter:image']").content

document.querySelector("meta[property='og:image']").content

4. Content should be like https://meta.decidim.org/rails/active_storage/blobs/123--foobar.png

📋 Checklist

🚨 Please review the guidelines for contributing to this repository.

• ❓ CONSIDER adding a unit test if your PR resolves an issue.
• ✔️ DO check open PR's to avoid duplicates.
• ✔️ DO keep pull requests small so they can be easily reviewed.
• ✔️ DO build locally before pushing.
• ✔️ DO make sure tests pass.
• ✔️ DO make sure any new changes are documented in docs/.
• ✔️ DO add and modify seeds if necessary.
• ✔️ DO add CHANGELOG upgrade notes if required.
• ✔️ DO add to GraphQL API if there are new public fields.
• ✔️ DO add link to MetaDecidim if it's a new feature.
• ❌AVOID breaking the continuous integration build.
• ❌AVOID making significant changes to the overall architecture.

📷 Screenshots

♥️ Thank you!