Checks if we are on root dir.

app/assets/javascripts/repo/index.js

@@ -23,6 +23,7 @@ function initRepo() {
   Store.checkIsCommitable();
   Store.projectId = repo.dataset.projectId;
   Store.tempPrivateToken = repo.dataset.tempToken;
+  Store.projectUrl = repo.dataset.projectUrl;
 
   this.vm = new Vue({
     el: repo,

app/assets/javascripts/repo/repo_helper.js

@@ -100,6 +100,21 @@ const RepoHelper = {
     return 0;
   },
 
+  isRoot(url) {
+    // the url we are requesting -> split by the project URL. Grab the right side.
+    const isRoot = !!url.split(Store.projectUrl)[1]
+    // remove the first "/"
+    .slice(1)
+    // split this by "/"
+    .split('/')
+    // remove the first two items of the array... usually /tree/master.
+    .slice(2)
+    // we want to know the length of the array.
+    // If greater than 0 not root.
+    .length;
+    return isRoot;
+  },
+
   getContent(treeOrFile, cb) {
     let file = treeOrFile;
     // const loadingData = RepoHelper.setLoading(true);
@@ -139,6 +154,7 @@ const RepoHelper = {
         }
       } else {
         // it's a tree
+        if(!file) Store.isRoot = RepoHelper.isRoot(Service.url);
         file = RepoHelper.setDirectoryOpen(file);
         const newDirectory = RepoHelper.dataToListOfFiles(data);
         Store.addFilesToDirectory(file, Store.files, newDirectory);

app/assets/javascripts/repo/repo_sidebar.vue

@@ -82,6 +82,7 @@ export default RepoSidebar;
         :is-mini="isMini"
         :project-name="projectName"/>
       <repo-previous-directory
+        v-if="isRoot"
         :prev-url="prevURL"
         @linkclicked="linkClicked(prevURL)"/>
       <repo-loading-file

app/assets/javascripts/repo/repo_store.js

@@ -11,9 +11,11 @@ const RepoStore = {
   editButton: '',
   editMode: false,
   isTree: false,
+  isRoot: false,
   prevURL: '',
   projectId: '',
   projectName: '',
+  projectUrl: '',
   trees: [],
   blobs: [],
   submodules: [],