add count for current topic in random topic component

src/actions/topics.js

@@ -40,7 +40,7 @@ export function getRandomTopicVideos(allTopics, numVideos=4) {
   return dispatch => {
     const randomTopic = getRandomTopic(allTopics);
     dispatch(loadingRandomTopicVideos());
-    fetchVideosByTopic(randomTopic, 0, 4)
+    fetchVideosByTopic(randomTopic.name, 0, 4)
       .then(videos => {
         dispatch(loadedRandomTopicVideos(randomTopic, videos));
       });

src/components/RandomTopic.js

@@ -21,7 +21,7 @@ class RandomTopic extends React.Component {
             See All Topics
           </Link>
           <Link to="/topics">
-            See All videos of {this.props.topicName} ()
+            See All videos of {this.props.topicName} ({this.props.topicCount})
           </Link>
         </Grid>
       </section>
@@ -33,7 +33,8 @@ class RandomTopic extends React.Component {
 RandomTopic.propTypes = {
   topicName: PropTypes.string,
   videos: PropTypes.array,
-  loading: PropTypes.bool
+  loading: PropTypes.bool,
+  topicCount: PropTypes.number
 };
 
 export default (RandomTopic);

src/containers/Home.js

@@ -45,7 +45,7 @@ const mapStateToProps = state => ({
   allTopics: state.topics.allTopics,
   loadingAllTopics: state.topics.loadingAllTopics,
   randomTopic: state.topics.randomTopic,
-  randomTopicCount: static.topics.randomTopicCount,
+  randomTopicCount: state.topics.randomTopicCount,
   loadingRandomTopic: state.topics.loadingRandomTopic,
   randomTopicVideos: state.topics.randomTopicVideos
 });