AJAX载入文章数据

app/templates/userpage_get.html

@@ -45,22 +45,25 @@
 {#    {% endfor %}#}
 
     {% if result_of_generate_article != "had read all articles" %}
-        <a id="next_btn" class="btn btn-success" href="/{{ username }}/reset" role="button"> 下一篇 Next Article </a>
+        <button class="btn btn-success" id="load_next_article" onclick="load_next_article()"> 下一篇 Next Article </button>
+<!--        <a id="next_btn" class="btn btn-success" href="/{{ username }}/reset" role="button"> 下一篇 Next Article </a>-->
     {% endif %}
     {% if session.get('visited_articles') and session.get('visited_articles')['index']>0 %}
-        <a id="pre_btn" class="btn btn-success" href="/{{ username }}/back" role="button"> 上一篇 Previous Article </a>
+<!--        <a id="pre_btn" class="btn btn-success" href="/{{ username }}/back" role="button"> 上一篇 Previous Article </a>-->
+        <button class="btn btn-success" id="load_pre_article" onclick="load_pre_article()"> 上一篇 Previous Article </button>
     {% endif %}
 
-    <p><b>阅读文章并回答问题</b></p>
+    <p><b>阅读文章并回答问题{{result_of_generate_article}}</b></p>
     <div id="text-content">
         {% if result_of_generate_article == 'found' %}
-            <div class="alert alert-success" role="alert">According to your word list, your level is <span class="badge bg-success">{{ today_article["user_level"] }}</span>  and we have chosen an article with a difficulty level of <span class="badge bg-success">{{ today_article["text_level"] }}</span> for you.</div>
+        <div id="found">
-                <p class="text-muted">Article added on: {{ today_article["date"] }}</p><br/>
+            <div class="alert alert-success" role="alert">According to your word list, your level is <span class="badge bg-success" id="user_level">{{ today_article["user_level"] }}</span>  and we have chosen an article with a difficulty level of <span class="badge bg-success" id="text-level">{{ today_article["text_level"] }}</span> for you.</div>
+                <p class="text-muted" id="date">Article added on: {{ today_article["date"] }}</p><br/>
             <div class="p-3 mb-2 bg-light text-dark"><br/>
-            <p class="display-5">{{ today_article["article_title"] }}</p><br/>
+            <p class="display-5" id="article_title">{{ today_article["article_title"] }}</p><br/>
             <p class="lead"><font id="article" size=2>{{ today_article["article_body"] }}</font></p><br/>
-            <p><small class="text-muted">{{ today_article['source'] }}</small></p><br/>
+            <p><small class="text-muted" id="source">{{ today_article['source'] }}</small></p><br/>
-            <p><b>{{ today_article['question'] }}</b></p><br/>
+            <p><b id="question">{{ today_article['question'] }}</b></p><br/>
                 <script type="text/javascript">
                     function toggle_visibility(id) { {# https://css-tricks.com/snippets/javascript/showhide-element/#}
                         const e = document.getElementById(id);
@@ -73,12 +76,13 @@
                 <button onclick="toggle_visibility('answer');">ANSWER</button>
                 <div id="answer" style="display:none;">{{ today_article['answer'] }}</div><br/>
             </div>
+        </div>
         {% elif result_of_generate_article == "not found" %}
-            <div class="alert alert-success" role="alert">
+            <div class="alert alert-success" role="alert" id="not_found">
                 <p class="text-muted"><span class="badge bg-success">Notes:</span><br>No article is currently available for you. You can try again a few times or mark new words in the passage to improve your level.</p>
             </div>
         {% elif result_of_generate_article == "had read all articles" %}
-            <div class="alert alert-success" role="alert">
+            <div class="alert alert-success" role="alert" id="read_all">
                 <p class="text-muted"><span class="badge bg-success">Notes:</span><br>You've read all the articles.</p>
             </div>
         {% endif %}
@@ -146,6 +150,50 @@
         <script src="{{ js }}"></script>
     {% endfor %}
 {% endif %}
+<script>
+    function load_next_article(){
+        $.ajax({
+            url: '/get_next_article/{{username}}',
+            dataType: 'json',
+            success: function(data) {
+
+                // 更新页面内容
+                    if(data){
+                        $('#user_level').html(data['user_level']);
+                        $('#text_level').html(data["text_level"]);
+                        $('#date').html('Article added on: '+data["date"]);
+                        $('#article_title').html(data["article_title"]);
+                        $('#article').html(data["article_body"]);
+                        $('#source').html(data['source']);
+                        $('#question').html(data["question"]);
+                        $('#answer').html(data["answer"]);
+                    }
+
+            }
+        });
+
+    }
+    function load_pre_article(){
+        $.ajax({
+            url: '/get_pre_article/{{username}}',
+            dataType: 'json',
+            success: function(data) {
+                // 更新页面内容
+                if(data){
+                    $('#user_level').html(data['user_level']);
+                    $('#text_level').html(data["text_level"]);
+                    $('#date').html('Article added on: '+data["date"]);
+                    $('#article_title').html(data["article_title"]);
+                    $('#article').html(data["article_body"]);
+                    $('#source').html(data['source']);
+                    $('#question').html(data["question"]);
+                    $('#answer').html(data["answer"]);
+                }
+            }
+        });
+        console.info({{visited_articles}})
+    }
+</script>
 </body>
 <style>
     mark {

app/user_service.py

@@ -21,6 +21,21 @@ userService = Blueprint("user_bp", __name__)
 path_prefix = '/var/www/wordfreq/wordfreq/'
 path_prefix = './'  # comment this line in deployment
 
+@userService.route("/get_next_article/<username>",methods=['GET','POST'])
+def get_next_article(username):
+    user_freq_record = path_prefix + 'static/frequency/' + 'frequency_%s.pickle' % (username)
+    session['old_articleID'] = session.get('articleID')
+    if request.method == 'GET':
+        visited_articles = session.get("visited_articles")
+        if visited_articles['article_ids'][-1] == "null":  # 如果当前还是“null”，则将“null”pop出来,无需index+=1
+            visited_articles['article_ids'].pop()
+        else:  # 当前不为“null”，直接 index+=1
+            visited_articles["index"] += 1
+        session["visited_articles"] = visited_articles
+        visited_articles, data, result_of_generate_article = get_today_article(user_freq_record, session.get('visited_articles'))
+    else:
+        return 'Under construction'
+    return json.dumps(data)
 
 @userService.route("/<username>/reset", methods=['GET', 'POST'])
 def user_reset(username):
@@ -40,6 +55,18 @@ def user_reset(username):
     else:
         return 'Under construction'
 
+@userService.route("/get_pre_article/<username>",methods=['GET'])
+def get_pre_article(username):
+    user_freq_record = path_prefix + 'static/frequency/' + 'frequency_%s.pickle' % (username)
+    if request.method == 'GET':
+        visited_articles = session.get("visited_articles")
+        visited_articles["index"] -= 1  # 上一篇，index-=1
+        if visited_articles['article_ids'][-1] == "null":  # 如果当前还是“null”，则将“null”pop出来
+            visited_articles['article_ids'].pop()
+        session["visited_articles"] = visited_articles
+        visited_articles, data, result_of_generate_article = get_today_article(user_freq_record, session.get('visited_articles'))
+        return json.dumps(data)
+
 @userService.route("/<username>/back", methods=['GET'])
 def user_back(username):
     '''