Tags (tags)

grammar:

　　{% tags %}

 

 {% For%} tags:

<ul>
    {% for name in name_list %}
        <li>counter:{{ forloop.counter }}--{{ name }}</li>
    {% endfor %}
</ul>    

　　{% For%} forloop tag has the default dictionary objects corresponding to the key:

{{forloop.counter}} of the current cycle number (from 1) 
{} {} forloop.counter0 current cycle number (starting with 0) 
{} {} forloop.revcounter current cycle number (1 to descending end) 
{ {forloop.revcounter0}} of the current cycle number (0 to descending end) 
{} {} forloop.first determines whether the current cycle is the first return True or False 
{} {} forloop.last determines whether the current cycle is the last time True else return False 
{} {} forloop.parentloop while inside the outer loop of the present cycle

view.py Code

DEF tags_test (Request): 
    NAME_LIST = [ 
        [ ' Wang 1 ' , ' Mike 1 ' , ' small week ' , ' Liu 1 ' ], 
        [ ' Wang 2 ' , ' Li 2 ' , ' small Week 2 ' , ' Liu 2 ' ], 
        [ ' Wang 3 ' , ' Li 3 ' , ' small weeks 3 ' , 'Liu 3 '], 
        [ ' Wang 4 ' , ' Li 4 ' , ' small weeks 4 ' , ' Liu 4 ' ], 
    ] 
    return the render (Request, ' tags_test.html ' , { ' NAME_LIST ' : NAME_LIST})

html code

< Table border = ". 1" > 
    < tbody > 
        {%}% for NAME_LIST in Row 
            < TR > 
                {%}% for Row name in 
　　　　　　　　　　　　{# parent when the sub-loop and the number of cycles can be divided by 2 text color is red # } 
                    {IF forloop.counter% | divisibleby: '2' and forloop.parentloop.counter | divisibleby: '2'}% 
                        < TD style = "Color: Red" > {{name}} </ TD > 
                    {the else%% } 
                        < TD > {{name}} </ TD >
                    {% endif %}
                {% endfor %}
            </tr>
        {% endfor %}
    </tbody>
</table>                

effect:

　　

for--empty：

< UL > 
    {%} for obj in obj_list% 
        < Li > {} {} obj.name </ Li > 
    {%}% empty 
        currently no name object obj 
    {%} endfor% 
</ UL >    

{% If%} tags:

if--elif--else

 

if--else