Re: Conditionals in Templates

[Melvyn Sopacua]

On 4-7-2012 0:49, Javier Guerra Giraldez wrote:
> On Tue, Jul 3, 2012 at 3:39 PM, Bill Freeman  wrote:
>> The obvious ways are:
>>
>> 1. Provide a model method that returns a string representing the type
>> of the instance, compare against that
>> 2. Decorate the instance with an attribute giving the name of the type
>> as a string...
> 
> 3. write a template tag

4. Don't use polymorphic variables in templates. Handle it in the view
by providing differently named variables (x and x_list for example).


-- 
Melvyn Sopacua


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Re: Conditionals in Templates

[Javier Guerra Giraldez]

On Tue, Jul 3, 2012 at 3:39 PM, Bill Freeman  wrote:
> The obvious ways are:
>
> 1. Provide a model method that returns a string representing the type
> of the instance, compare against that
> 2. Decorate the instance with an attribute giving the name of the type
> as a string...

3. write a template tag


-- 
Javier

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Re: Conditionals in Templates

[Bill Freeman]

The obvious ways are:

1. Provide a model method that returns a string representing the type
of the instance, compare against that
2. Decorate the instance with an attribute giving the name of the type
as a string...

Can't change the instance (I really think you can still decorate it in
the view, python is flexible that way, but), instead of rows of
instances, return rows of wrapper objects that have the type name as
above, and the original instance as another attribute.

On Tue, Jul 3, 2012 at 3:50 PM, Russ Abbott  wrote:
> I'm generating a table. I want the cells to be different depending on the
> type of the content. How do I test for the type of the content? I'd like to
> do something like this.
>
> 
> {% for row in rows %}
> 
> {% for cell in row %}
> 
> {% if isinstance( {{ cell }}, list) %}
> 
> {% for element in cell %}
> {{  element  }}
> {% endfor %}
> 
> {% else %}
> {{ cell }}
> {% endif %}
> 
> {% endfor %}
> 
> {% endfor %}
> 
>
> But "{% if isinstance( {{ cell }}, list) %}" is not allowed. Apparently I
> can't call a function in an {% if ...  %} tag.  Is there another way to do
> this?
>
> Thanks.
>
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Re: Conditionals in Templates

[Russ Abbott]

Here's a workaround I came up with.

I defined a class:

class TableValue:
def __init__(self, value):
self.value = value
self.is_list = isinstance(value, list)

Then in the Template I wrote


{% for row in rows %}

{% for cell in row %}

{% if cell.is_list %}

{% for element in cell.value %}
{{ element }}
{% endfor %}

{% else %}
{{ cell.value }}
{% endif %}

{% endfor %}

{% endfor %}


Is that considered decent Django?

On Tuesday, July 3, 2012 12:50:15 PM UTC-7, Russ Abbott wrote:
>
> I'm generating a table. I want the cells to be different depending on the 
> type of the content. How do I test for the type of the content? I'd like to 
> do something like this.
>
> 
> {% for row in rows %}
> 
> {% for cell in row %}
> 
> {% if isinstance( {{ cell }}, list) %}
> 
> {% for element in cell %}
> {{  element  }}
> {% endfor %}
> 
> {% else %}
> {{ cell }}
> {% endif %}
> 
> {% endfor %}
> 
> {% endfor %}
> 
>
> But "{% if isinstance( {{ cell }}, list) %}" is not allowed. Apparently I 
> can't call a function in an {% if ...  %} tag.  Is there another way to do 
> this?
>
> Thanks.
>

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Conditionals in Templates

[Russ Abbott]

I'm generating a table. I want the cells to be different depending on the 
type of the content. How do I test for the type of the content? I'd like to 
do something like this.


{% for row in rows %}

{% for cell in row %}

{% if isinstance( {{ cell }}, list) %}

{% for element in cell %}
{{  element  }}
{% endfor %}

{% else %}
{{ cell }}
{% endif %}

{% endfor %}

{% endfor %}


But "{% if isinstance( {{ cell }}, list) %}" is not allowed. Apparently I 
can't call a function in an {% if ...  %} tag.  Is there another way to do 
this?

Thanks.

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Re: Multiple choice conditionals in templates?

[Sean Schertell]

Thank you! I did read the template docs but I missed that one. Works  
great!

:-)

Sean


On Aug 30, 2006, at 6:30 PM, Kenneth Gonsalves wrote:

>
>
> On 30-Aug-06, at 2:45 PM, Sean Schertell wrote:
>
>> Obviously this doesn't work because you can't use "==" in templates.
>> So how can I achieve this?
>
> use ifequal
>
> -- 
>
> regards
> kg
> http://lawgon.livejournal.com
> http://nrcfosshelpline.in/web/
>
>
>
> >
>
>


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Re: Multiple choice conditionals in templates?

[Kenneth Gonsalves]

On 30-Aug-06, at 2:45 PM, Sean Schertell wrote:

> Obviously this doesn't work because you can't use "==" in templates.
> So how can I achieve this?

use ifequal

-- 

regards
kg
http://lawgon.livejournal.com
http://nrcfosshelpline.in/web/



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Multiple choice conditionals in templates?

[Sean Schertell]

How can I display different things in my template depending on the  
value of a single column in my database?

For example:


{% for e in events %}
 {% if e.status == '1' %}Buy  
Tickets{% endif %}
 {% if e.status == '2' %}SOLD OUT! 
{% endif %}
 {% if e.status == '3' %}Cancelled! 
{% endif %}
{% endfor %}


Obviously this doesn't work because you can't use "==" in templates.  
So how can I achieve this?

:-)

Sean


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