more info about django and python

django.html

@@ -148,7 +148,7 @@ class Product(models.Model):
 
     """Product information"""
 
-    name = models.CharField(max_length=40)
+    name = models.CharField('Name', max_length=40)
                         </code></pre>
 
                     </section>
@@ -187,6 +187,9 @@ class ProductForm(ModelForm):
     class Meta:
         model = Product
                         </code></pre>
+
+                        <p>O "label" do campo ficará com o valor do primeiro parâmetro
+                        usado no field em ModelForms.</p>
                     </section>
 
                     <section>
@@ -324,11 +327,48 @@ urlpatterns = [
                 </section>
 
                 <section>
-                    <h2>Relationships</h2>
+                    <section>
+                        <h2>Índices</h2>
 
-                    <p>Projeto &gt; App &gt; models.py</p>
+                        <p>Cada campo pode ser indexado usando a propriedade
+                            <code>db_index</code>.</p>
 
-                    <pre><code class="hljs">
+                        <pre><code class="hljs">
+class Order(models.Model):
+
+    """An order."""
+
+    costumer.models.ForeignKey(User, db_index=True)
+                        </code></pre>
+                    </section>
+
+                    <section>
+                        <h2>Meta</h2>
+
+                        <p>Models podem ter uma classe de "Meta" com informações adicionais:</p>
+
+                        <pre><code class="hljs">
+class Order(models.Model):
+    
+    """An order."""
+
+    costumer = models.ForeignKey(User, db_index=True)
+    date = models.DateTimeField(auto_now=True)
+
+    class Meta:
+        db_table = 'my_orders'
+        index_together = [
+            ('costumer', 'date')
+        ]
+                        </code></pre>
+                    </section>
+
+                    <section>
+                        <h2>Relationships</h2>
+
+                        <p>Projeto &gt; App &gt; models.py</p>
+
+                        <pre><code class="hljs">
 class Product(models.Model):
 
     """Product information"""
@@ -342,7 +382,36 @@ class Order(models.Model):
     """An order."""
 
     products = models.ManyToManyField(Product)
-                    </code></pre>
+                        </code></pre>
+                    </section>
+
+                    <section>
+                        <h2>"OneToMany"</h2>
+
+                        <p>
+                            Não existe relacionamento "one to many" (p.ex., um
+                            pedido tem vários ítens de pedido). Para isso,
+                            usa-se o <code>ForeignKey</code> na parte "many".
+                        </p>
+
+                        <pre><code class="hljs">
+class Order(models.Model):
+
+    """An order."""
+
+    costumer = models.ForeignKey(Users)
+
+
+class OrderItem(models.Model):
+
+    """An item of an order."""
+
+    order = models.ForeignKey(Order))metro
+    product = models.ForeignKey(Product)
+    quantity = models.PositiveIntegerField()
+                        </code></pre>
+
+                    </section>
                 </section>
 
                 <section>

python.html

@@ -266,7 +266,12 @@ Python 2.7.5 (default, Jun 25 2014, 10:19:55)
 [GCC 4.8.2 20131212 (Red Hat 4.8.2-7)] on linux2
 Type "help", "copyright", "credits" or "license" for more information.
 >>>
-                        </code></pre></p>
+                        </code></pre>
+
+                        <p class="fragment">
+                            Python 2 (todas as versões), deixarão de ser
+                            suportadas em 2020!
+                        </p>
                     </section>
 
                     <section>
@@ -423,12 +428,6 @@ set(['a'])
                         <p><small>(... que é o nome bonito para coisas tipo <code>if</code>, <code>for</code>...)</small></p>
                     </section>
 
-                    <section>
-                        <p>Antes de mais nada...</p>
-
-                        <h3 class='fragment'>Blocos</h3>
-                    </section>
-
                     <section>
                         <h3><code>if [condição]</code></h3>
 
@@ -687,6 +686,17 @@ iterável[start:end:step]
 4
                         </code></pre></p>
                     </section>
+
+                    <section>
+                        <h3>Funções podem conter funções</h3>
+
+                        <pre><code class="hljs">
+&gt;&gt;&gt; def funcao(a, b):
+...    def inner(b):
+...        return b * 2 if b &gt; 0 else b * -2
+...    return inner(a) + b
+                        </code></pre>
+                    </section>
                 </section>
 
                 <section>
@@ -949,10 +959,23 @@ class MockRoboDeLimpeza(RoboDeLimpeza, MockRobo)
                             <a href='https://www.youtube.com/watch?v=EiOglTERPEo'>Super Considered super!</a>
                         </p>
                     </section>
+
+                    <section>
+                        <h3>Assim como funções, classes podem conter classes:</h3>
+
+                        <pre><code class="hljs">
+&gt;&gt;&gt; class Outer(object):
+...    class Inner(object):
+...        def __init__(self):
+...            self.value = 1
+...    def __init__(self):
+...        self.value = Inner()
+                        </code></pre>
+                    </section>
                 </section>
 
                 <section>
-                    <h2>As Esquisitices de Python</h2>
+                    <h2>Mais Esquisitices de Python</h2>
                 </section>
 
                 <section>