Display parent commit id at the commit details page.

src/main/scala/util/JGitUtil.scala

@@ -52,10 +52,13 @@ object JGitUtil {
    * @param committer  the commiter name
    * @param shortMessage the short message
    * @param fullMessage the full message
+   * @param parents the list of parent commid id
    */
-  case class CommitInfo(id: String, time: Date, committer: String, shortMessage: String, fullMessage: String){
+  case class CommitInfo(id: String, time: Date, committer: String, shortMessage: String, fullMessage: String, parents: List[String]){
-    def this(rev: org.eclipse.jgit.revwalk.RevCommit) =
+    
-      this(rev.getName, rev.getCommitterIdent.getWhen, rev.getCommitterIdent.getName, rev.getShortMessage, rev.getFullMessage)
+    def this(rev: org.eclipse.jgit.revwalk.RevCommit) = this(
+        rev.getName, rev.getCommitterIdent.getWhen, rev.getCommitterIdent.getName, rev.getShortMessage, rev.getFullMessage,
+        rev.getParents().map(_.name).toList)
 
     val description = {
       val i = fullMessage.trim.indexOf("\n")

src/main/twirl/repo/commit.scala.html

@@ -22,7 +22,21 @@
       <td>
         <a href="@path/@commit.committer" class="username">@commit.committer</a> <span class="description">@helpers.datetime(commit.time)</span>
         <div class="pull-right align-right monospace small">
+          @if(commit.parents.size == 0){
+            <span class="description">0 parent</span>
+          }
+          @if(commit.parents.size == 1){
+            <span class="description">1 parent</span>
+            <a href="@path/@repository.owner/@repository.name/commit/@commit.parents(0)" class="commit-id">@commit.parents(0).substring(0, 7)</a>
+          }
           <span class="description">commit</span> @commit.id
+          @if(commit.parents.size > 1){
+            <br>
+            <span class="description">@commit.parents.size parent</span>
+            @commit.parents.map { parent =>
+              @parent
+            }.mkString(" + ")
+          }
         </div>
       </td>
     </tr>