- working! but crashes when topic has no questions

Miguel Barao
1 parent e831c259
Showing 4 changed files with 60 additions and 21 deletions Show diff stats
BUGS.md
knowledge.py
templates/learn.html
templates/topics.html
 BUGS:
+- enter faz GET /question, que responde com json no ecran
 - tabs em textarea nao funcionam correctamente (insere 1 espaco em vez de 4)
 - reportar comentarios após submeter.
 - os topicos locked devem estar inactivos no sidebar.
@@ -29,9 +29,6 @@ class Knowledge(object):
         # compute recommended sequence of topics  ['a', 'b',...]
         self.topic_sequence = nx.topological_sort(self.depgraph)
-        print(self.topic_sequence)
-        print(self.depgraph.edges())
-
         # select a topic to do and initialize questions
         self.start_topic()
@@ -40,29 +37,42 @@ class Knowledge(object):
     # If all levels > 0.8, will stay in the last one forever...
     # ------------------------------------------------------------------------
     def start_topic(self, topic=''):
-        print(f'knowledge.start_topic "{topic}"')
+        # unlock topics that have satisfied dependencies
+        unlock_topics = []
+        for t in self.topic_sequence:
+            if t not in self.state:  # is locked
+                deps = self.depgraph.predecessors(t)
+                if all(d in self.state and self.state[d]['level'] > 0.01 for d in deps): # dependencies done
+                    unlock_topics.append(t)
+
+        for t in unlock_topics:
+            self.state[t] = {'level': 0.0, 'date': datetime.now()}
+            logger.info(f'User "{self.student}" unlocked "{t}"')
+
+        # choose topic
         if not topic:
             for topic in self.topic_sequence:
                 unlocked = topic in self.state
                 needs_work = unlocked and self.state[topic]['level'] < 0.8
                 factory = self.depgraph.node[topic]['factory']
-                print(f'{topic}, unlocked={unlocked}, needs_work={needs_work}')
                 if factory and (not unlocked or needs_work):
                     break
-                # logger.info(f'{self.student} skipped topic "{topic}"')
+
+        # use given topic if possible
         else:
+            unlocked = topic in self.state
             factory = self.depgraph.node[topic]['factory']
-            # FIXME if factory is empty???
+            if not factory or not unlocked:
+                logger.debug(f'User "{self.student}" cannot start topic "{topic}"')
+                return
         self.current_topic = topic
-        logger.info(f'User "{self.student}" topic = "{topic}"')
+        logger.info(f'User "{self.student}" topic set to "{topic}"')
         # generate question instances for current topic
         questionlist = self.depgraph.node[topic]['questions']
-        factory = self.depgraph.node[topic]['factory']
         self.questions = [factory[qref].generate() for qref in questionlist]
-
-        self.current_question = self.questions.pop(0)
+        self.current_question = self.questions.pop(0)  # FIXME crashes if questions==[]
         self.current_question['start_time'] = datetime.now()
         self.finished_questions = []
@@ -78,14 +88,18 @@ class Knowledge(object):
         # new question if answer is correct
         if grade > 0.999:
             self.finished_questions.append(q)
+            print('questions: ', self.questions)
+            print('finished: ', self.finished_questions)
             try:
                 self.current_question = self.questions.pop(0) # FIXME empty?
             except IndexError:
+                print('no more questions!')
                 self.current_question = None
                 self.state[self.current_topic] = {
                     'level': 1.0,
                     'date': datetime.now()
                 }
+                self.start_topic()
             else:
                 self.current_question['start_time'] = datetime.now()
         else:
@@ -110,13 +124,23 @@ class Knowledge(object):
         return self.current_topic
     # ------------------------------------------------------------------------
-    def get_knowledge_state(self):  # [('topic', 0.9), ...]
+    # Return list of tuples (topic, level).
+    # Levels are in the interval [0, 1] or None if the topic is locked.
+    # Topics unlocked but not yet done have level 0.0.
+    # Example:  [('topic_A', 0.9), ('topic_B', None), ...]
+    # ------------------------------------------------------------------------
+    def get_knowledge_state(self):
         ts = []
         for t in self.topic_sequence:
             if t in self.state:
-                ts.append((t, self.state[t]['level']))
+                ts.append((t, self.state[t]['level']))   # already done
             else:
-                ts.append((t, 0.0))
+                # deps = self.depgraph.predecessors(t)
+                # # print(t, deps)
+                # if all(d in self.state for d in deps):
+                #     ts.append((t, 0.0))   # unlocked not yet done
+                # else:
+                ts.append((t, None))  # locked
         return ts
     # ------------------------------------------------------------------------
@@ -168,6 +168,7 @@ function updateQuestion(response){
             if (e.keyCode == 13 && e.shiftKey) {
                 e.preventDefault();
                 postQuestion();
+                return false;
             }
         });
         $("textarea").keydown(function (e) {
@@ -205,7 +206,6 @@ function updateQuestion(response){
     case "finished_topic":
         $('#topic_progress').css('width', '100%').attr('aria-valuenow', 100);
         $("#topics").html(response["params"]["state"]);
-
         $("#question_div").html('<img src="/static/trophy.png" alt="trophy" class="img-rounded img-responsive center-block">');  // FIXME size
         break;
     }
@@ -228,7 +228,6 @@ function postQuestion() {
 // Get current question
 function getQuestion() {
     $.ajax({
-        // type: "GET",
         url: "/question",
         // headers: {"X-XSRFToken": token},
         dataType: "json", // expected from server
@@ -8,15 +8,30 @@
         {% if t[0] == current_topic %}
         <li class="active">    <!-- class="active" class="disabled" -->
-            <a href="#"> {{ gettopicname(t[0]) }}<br>
-            {{ round(t[1]*5)*'<i class="fa fa-star text-success" aria-hidden="true"></i>' + round(5-t[1]*5)*'<i class="fa fa-star-o" aria-hidden="true"></i>' }}
+            <a href="#">
+                {{ gettopicname(t[0]) }}
+            </a>
+
+        {% elif t[1] is None %}
+
+        <li class="disabled">
+
+            <a href="#">
+                {{ gettopicname(t[0]) }} <br>
+                <i class="fa fa-lock" aria-hidden="true"></i>
             </a>
         {% else %}
-        <li>    <!-- class="active" class="disabled" -->
+        <li>
+
+            <a href="/?topic={{ t[0] }}">
+                {{ gettopicname(t[0]) }} <br>
+                {% if t[1] < 0.01 %}
+                    <i class="fa fa-unlock" aria-hidden="true"></i>
-            <a href="/?topic={{ t[0] }}"> {{ gettopicname(t[0]) }}<br>
-            {{ round(t[1]*5)*'<i class="fa fa-star text-success" aria-hidden="true"></i>' + round(5-t[1]*5)*'<i class="fa fa-star-o" aria-hidden="true"></i>' }}
+                {% else %}
+                    {{ round(t[1]*5)*'<i class="fa fa-star text-success" aria-hidden="true"></i>' + round(5-t[1]*5)*'<i class="fa fa-star-o" aria-hidden="true"></i>' }}
+                {% end %}
             </a>
         {% end %}
1		1
2	BUGS:	2	BUGS:
3		3
		4	+- enter faz GET /question, que responde com json no ecran
4	- tabs em textarea nao funcionam correctamente (insere 1 espaco em vez de 4)	5	- tabs em textarea nao funcionam correctamente (insere 1 espaco em vez de 4)
5	- reportar comentarios após submeter.	6	- reportar comentarios após submeter.
6	- os topicos locked devem estar inactivos no sidebar.	7	- os topicos locked devem estar inactivos no sidebar.
	@@ -8,15 +8,30 @@		@@ -8,15 +8,30 @@
8	{% if t[0] == current_topic %}	8	{% if t[0] == current_topic %}
9	<li class="active"> <!-- class="active" class="disabled" -->	9	<li class="active"> <!-- class="active" class="disabled" -->
10		10
11	- <a href="#"> {{ gettopicname(t[0]) }}<br>
12	- {{ round(t[1]5)'<i class="fa fa-star text-success" aria-hidden="true"></i>' + round(5-t[1]5)'<i class="fa fa-star-o" aria-hidden="true"></i>' }}	11	+ <a href="#">
		12	+ {{ gettopicname(t[0]) }}
		13	+ </a>
		14	+
		15	+ {% elif t[1] is None %}
		16	+
		17	+ <li class="disabled">
		18	+
		19	+ <a href="#">
		20	+ {{ gettopicname(t[0]) }} <br>
		21	+ <i class="fa fa-lock" aria-hidden="true"></i>
13	</a>	22	</a>
14		23
15	{% else %}	24	{% else %}
16	- <li> <!-- class="active" class="disabled" -->	25	+ <li>
		26	+
		27	+ <a href="/?topic={{ t[0] }}">
		28	+ {{ gettopicname(t[0]) }} <br>
		29	+ {% if t[1] < 0.01 %}
		30	+ <i class="fa fa-unlock" aria-hidden="true"></i>
17		31
18	- <a href="/?topic={{ t[0] }}"> {{ gettopicname(t[0]) }}<br>
19	- {{ round(t[1]5)'<i class="fa fa-star text-success" aria-hidden="true"></i>' + round(5-t[1]5)'<i class="fa fa-star-o" aria-hidden="true"></i>' }}	32	+ {% else %}
		33	+ {{ round(t[1]5)'<i class="fa fa-star text-success" aria-hidden="true"></i>' + round(5-t[1]5)'<i class="fa fa-star-o" aria-hidden="true"></i>' }}
		34	+ {% end %}
20	</a>	35	</a>
21		36
22	{% end %}	37	{% end %}