fix: 修复课程详情页点击'继续学习'可能出错的问题

learnOnline/pages/course/player.js

@@ -75,12 +75,21 @@ Page({
         return item.children.length
       })
       this.setData({ loaded: true, course: response })
-      const activeChapter = this.findChapter(this.data.chapterId, response.chapters)
+      let activeChapter = null
+      if (this.data.chapterId) {
+        activeChapter = this.findChapter(this.data.chapterId, response.chapters)
+      } else {
+        activeChapter = response.chapters
+          .reduce((result, item) => {
+            return result.concat(item.children)
+          }, [])
+          .shift()
+      }
       if (activeChapter) {
         // 更新选中的章节
         this.updateActiveChapter(activeChapter)
         // 设置默认展开
-        this.setData({ 'collapseActiveNames[0]': activeChapter.parent_id })
+        this.setData({ 'collapseActiveNames[0]': activeChapter.parent_id, chapterId: activeChapter.id })
       }
     })
   },

learnOnline/pages/learnSystem/courseContent/courseContent.js

@@ -256,7 +256,7 @@ Page({
    */
   startLearn: function (e) {
     let _data = this.data.latestVideo
-    let cid = _data.cid, sid = _data.sid;
+    let cid = this.data.headerInfo.id, sid = this.data.headerInfo.sid;
     wx.navigateTo({
       url: `/pages/course/player?semester_id=${sid}&id=${cid}&chapter_id=${_data.id}`
     })