remove book from stacks

app/templates/show_book_detail.html

@@ -4,7 +4,8 @@
 <div class="container">
 
   <h1 class="header">{{ book.title }}</h1>
-  <img class="no_cover" id="{{ book.title }}" src="../uploads/cover/{{ book.cover }}" width="150" onerror="if (this.src != '../static/img/{{ book.cover }}') this.src = '../static/img/default_cover.gif';">
+ <img class="no_cover" id="{{ book.title }}" src="../uploads/cover/{{ book.cover }}" width="150" onerror="if (this.src != '../uploads/cover/{{ book.cover }}') this.src = '../static/img/default_cover.gif';">
+
   <p>Author(s): <ul>{% for author in book.authors %}
 
               <li><a href="{{url_for('show_author_by_id', id=author.id)}}">{{ author.author_name }}</a>  </li>
@@ -16,6 +17,8 @@
 
         <p>Stack(s): <ul>{% for stack in book.stacks %}
           <li><a href="{{url_for('show_stack_by_id', id=stack.id)}}">{{ stack.stack_name }}</a>
+            <p style="font-size: 10px;"><a href='{{url_for('remove_from_stack', stackid=stack.id, bookid=book.id)}}'> Remove from stack</a></p>
+
 
              {% endfor %}</ul></p>
 

app/templates/show_stack_detail.html

@@ -9,7 +9,7 @@
   <p>Books in this stack: {% for book in stack.books %}
 
           <li>  <a href="{{url_for('show_book_by_id', id=book.id)}}">{{book.title}}</a> </li>
-          <img class="no_cover" id="{{ book.title }}" src="../uploads/cover/{{ book.cover }}" width="150" onerror="if (this.src != '../static/img/{{ book.cover }}') this.src = '../static/img/default_cover.gif';">
+          <img class="no_cover" id="{{ book.title }}" src="../uploads/cover/{{ book.cover }}" width="150" onerror="if (this.src != '../uploads/cover/{{ book.cover }}') this.src = '../static/img/default_cover.gif';">
 <div class='widget'>
           <iframe src="../uploads/{{ book.file }}" width="50%" ></iframe>
 </div>

app/views.py

@@ -336,6 +336,17 @@ def edit_stack_by_id(id):
         return redirect(url_for('show_stack_by_id', id=id))
     return render_template('edit_stack_detail.html', stack=stack, form=form)
 
+@app.route('/stacks/<int:stackid>/remove/<int:bookid>', methods=['POST', 'GET'])
+def remove_from_stack(bookid, stackid):
+    book = Book.query.get(bookid)
+    stack = Stack.query.get(stackid)
+    if book not in stack.books:
+        return render_template('show_book_detail.html', book=book)
+    stack.books.remove(book)
+    db.session.commit()
+    return render_template('show_book_detail.html', book=book)
+
+
 ## search
 
 @app.route('/books', methods= ['POST','GET'])