Fix thumbs for new uploads to private repos

.all-contributorsrc

@@ -457,6 +457,16 @@
       "contributions": [
         "doc"
       ]
+    },
+    {
+      "login": "Quicksaver",
+      "name": "Luís Miguel",
+      "avatar_url": "https://avatars3.githubusercontent.com/u/802086?v=4",
+      "profile": "https://github.com/Quicksaver",
+      "contributions": [
+        "bug",
+        "code"
+      ]
     }
   ]
 }

README.md

@@ -1,5 +1,5 @@
 # Netlify CMS
-[![All Contributors](https://img.shields.io/badge/all_contributors-56-orange.svg)](#contributors)
+[![All Contributors](https://img.shields.io/badge/all_contributors-57-orange.svg)](#contributors)
 [![](https://badges.gitter.im/Join%20Chat.svg)](https://gitter.im/netlify/netlifycms)
 
 A CMS for static site generators. Give non-technical users a simple way to edit
@@ -57,6 +57,7 @@ Thanks goes to these wonderful people ([emoji key](https://github.com/kentcdodds
 | [<img src="https://avatars1.githubusercontent.com/u/979966?v=4" width="100px;"/><br /><sub><b>Artem Govorov</b></sub>](http://dm.gl)<br /> | [<img src="https://avatars3.githubusercontent.com/u/2683300?v=4" width="100px;"/><br /><sub><b>Cédric Delpoux</b></sub>](http://xuopled.netlify.com/)<br /> | [<img src="https://avatars3.githubusercontent.com/u/83225?v=4" width="100px;"/><br /><sub><b>imorente</b></sub>](https://github.com/imorente)<br /> | [<img src="https://avatars3.githubusercontent.com/u/5230460?v=4" width="100px;"/><br /><sub><b>David Francoeur</b></sub>](http://davidfrancoeur.com)<br /> | [<img src="https://avatars3.githubusercontent.com/u/1954977?v=4" width="100px;"/><br /><sub><b>Rusta</b></sub>](https://github.com/Rusta)<br /> | [<img src="https://avatars1.githubusercontent.com/u/1299786?v=4" width="100px;"/><br /><sub><b>Henrik Lau Eriksson</b></sub>](http://henrik.laueriksson.com)<br /> | [<img src="https://avatars0.githubusercontent.com/u/1294877?v=4" width="100px;"/><br /><sub><b>Kraig Walker</b></sub>](https://www.kraigwalker.com)<br /> |
 | [<img src="https://avatars1.githubusercontent.com/u/2994311?v=4" width="100px;"/><br /><sub><b>Rich Cook</b></sub>](http://www.TalesofMurder.com)<br /> | [<img src="https://avatars3.githubusercontent.com/u/1309950?v=4" width="100px;"/><br /><sub><b>Damien Van Der Windt</b></sub>](https://github.com/damienvdw)<br /> | [<img src="https://avatars2.githubusercontent.com/u/1571899?v=4" width="100px;"/><br /><sub><b>Matt Jared</b></sub>](http://mattjared.github.io/)<br /> | [<img src="https://avatars1.githubusercontent.com/u/1100280?v=4" width="100px;"/><br /><sub><b>bruce-one</b></sub>](https://github.com/bruce-one)<br /> | [<img src="https://avatars3.githubusercontent.com/u/103008?v=4" width="100px;"/><br /><sub><b>Frank Taillandier</b></sub>](https://frank.taillandier.me)<br />[📖](https://github.com/netlify/netlify-cms/commits?author=DirtyF "Documentation") | [<img src="https://avatars0.githubusercontent.com/u/2936813?v=4" width="100px;"/><br /><sub><b>Aquib Master</b></sub>](http://aquibm.com/)<br />[💻](https://github.com/netlify/netlify-cms/commits?author=aquibm "Code") | [<img src="https://avatars0.githubusercontent.com/u/3147296?v=4" width="100px;"/><br /><sub><b>Eric Jinks</b></sub>](http://ericjinks.com)<br />[💻](https://github.com/netlify/netlify-cms/commits?author=Jinksi "Code") |
 | [<img src="https://avatars3.githubusercontent.com/u/784848?v=4" width="100px;"/><br /><sub><b>Tony Alves</b></sub>](https://github.com/talves)<br />[💻](https://github.com/netlify/netlify-cms/commits?author=talves "Code") | [<img src="https://avatars3.githubusercontent.com/u/782?v=4" width="100px;"/><br /><sub><b>Ernie Bello</b></sub>](http://ern.me)<br />[🐛](https://github.com/netlify/netlify-cms/issues?q=author%3Aebello "Bug reports") | [<img src="https://avatars3.githubusercontent.com/u/6202476?v=4" width="100px;"/><br /><sub><b>Alexander Kushi-Willis</b></sub>](https://ackushiw.com)<br />[📖](https://github.com/netlify/netlify-cms/commits?author=ackushiw "Documentation") | [<img src="https://avatars3.githubusercontent.com/u/54089?v=4" width="100px;"/><br /><sub><b>Igor Kuznetsov</b></sub>](http://www.igk.ru)<br />[🐛](https://github.com/netlify/netlify-cms/issues?q=author%3Aigk1972 "Bug reports") [💻](https://github.com/netlify/netlify-cms/commits?author=igk1972 "Code") [🔌](#plugin-igk1972 "Plugin/utility libraries") | [<img src="https://avatars2.githubusercontent.com/u/1312538?v=4" width="100px;"/><br /><sub><b>Tim Erickson</b></sub>](http://neutyp.com)<br />[🎨](#design-neutyp "Design") | [<img src="https://avatars0.githubusercontent.com/u/871552?v=4" width="100px;"/><br /><sub><b>David Jones</b></sub>](http://davidejones.com)<br />[📖](https://github.com/netlify/netlify-cms/commits?author=davidejones "Documentation") | [<img src="https://avatars0.githubusercontent.com/u/27744332?v=4" width="100px;"/><br /><sub><b>Henrique Cavalieri</b></sub>](https://kaordica.com.br)<br />[📖](https://github.com/netlify/netlify-cms/commits?author=hcavalieri "Documentation") |
+| [<img src="https://avatars3.githubusercontent.com/u/802086?v=4" width="100px;"/><br /><sub><b>Luís Miguel</b></sub>](https://github.com/Quicksaver)<br />[🐛](https://github.com/netlify/netlify-cms/issues?q=author%3AQuicksaver "Bug reports") [💻](https://github.com/netlify/netlify-cms/commits?author=Quicksaver "Code") |
 <!-- ALL-CONTRIBUTORS-LIST:END -->
 
 This project follows the [all-contributors](https://github.com/kentcdodds/all-contributors) specification. Contributions of any kind welcome!

src/backends/github/implementation.js

@@ -136,8 +136,18 @@ export default class GitHub {
       const response = await this.api.persistFiles(null, [mediaFile], options);
       const repo = this.repo || this.getRepoFromResponseUrl(response.url);
       const { value, size, path, fileObj } = mediaFile;
-      const url = `https://raw.githubusercontent.com/${repo}/${this.branch}${path}`;
-      return { id: response.sha, name: value, size: fileObj.size, url, path: trimStart(path, '/') };
+      let url = `https://raw.githubusercontent.com/${repo}/${this.branch}${path}`;
+
+      // Assets uploaded to private repos will need valid access tokens.
+      const files = await this.api.listFiles(this.config.get('media_folder'));
+      for (let file of files) {
+        if (file.sha === mediaFile.sha) {
+          url = file.download_url;
+          break;
+        }
+      }
+
+      return { id: mediaFile.sha, name: value, size: fileObj.size, url, path: trimStart(path, '/') };
     }
     catch(error) {
       console.error(error);