Re: Template tag testing

[brianmac44]

On Jun 23, 12:00 pm, Michael <newmani...@gmail.com> wrote:
> On Tue, Jun 23, 2009 at 11:53 AM, brianmac44 <brian@gmail.com> wrote:
> I don't know if this is best practice, but here is the way I test my
> template tags essentially by rendering the templates:
>
> http://bitbucket.org/newmaniese/newmanutils/src/tip/newmanutils/tests.py

Thanks Michael.

That was a good start for me.  My tag needed some context from the
testing client.
http://dpaste.com/58833/

-Brian
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Template tag testing

[brianmac44]

I tried to test template tags with doctests and unittests but I'm not
sure what token and/or context to use. What's the best practice for
testing template tags?

Thanks,

Brian

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Re: S3Storage.py and Thumbnails using PIL (IOError / cannot identify image file)

[brianmac44]

With my code, what are you using as "content"?

I'm using: form.cleaned_data['source'].read()

So my code looks something like this:
PHOTO_MEDIUM_SIZE = 400,400
source_image = form.cleaned_data['source'].read()
resized_image = resize_photo(source_image,PHOTO_MEDIUM_SIZE))
photos.save(image_name,resized_image)

You may want to also want to  check the image file you are using for
testing, interlaced PNG's are not supported by PIL.
http://www.pythonware.com/library/pil/handbook/format-png.htm

-Brian

On Dec 22, 2:46 pm, Merrick <merr...@gmail.com> wrote:
> I got the same result with brianmac44's code. I also verified that the
> my resize_image() works when opening the file from the local
> filesystem - so I am somehow not passing the file in a manner that
> Image.open likes.
>
> On Dec 22, 4:45 am, brianmac44 <anon1...@gmail.com> wrote:
>
> > I had the same problem two weeks ago. This is what I wrote:
>
> > def resize_photo(self,content,size):
> >     img = Image.open(ContentFile(content))
> >     img.thumbnail(size, Image.ANTIALIAS)
> >     io = StringIO.StringIO()
> >     img.save(io, 'PNG')
> >     return ContentFile(io.getvalue())
>
> > Hope this helps.
>
> > -Brian
>
> > On Dec 22, 4:41 am, Merrick <merr...@gmail.com> wrote:
>
> > > Thank you I tried that and I still get the same error.
>
> > > I spent a little more time looking at PIL / Image.py and cleaning up
> > > the code. From what I can tell the Image.open method is having trouble
> > > with what I am passing to it.
>
> > > def resize_image(file, size=(50, 50)):
> > >     from PIL import Image
> > >     from cStringIO import StringIO
> > >     from django.core.files.base import ContentFile
>
> > >     image_data = StringIO(file.read())
>
> > >     ### this line below is where the issue is ###
> > >     image = Image.open(image_data)
>
> > >     if image.mode not in ('L', 'RGB'):
> > >         image = image.convert('RGB')
> > >     image.thumbnail(size, Image.ANTIALIAS)
> > >     o = StringIO()
> > >     image.save(o, "JPEG")
> > >     return  ContentFile(o.getvalue())
>
> > > This is how I call it:
> > >             picture = pform.cleaned_data['picture']
> > >             thumbnail_content = resize_image(picture)
>
> > > Thank you for looking at this.
>
> > > On Dec 21, 3:08 pm, "j...@zigzap.com" <jlb2...@gmail.com> wrote:
>
> > > > From what I can tell your not wrapping the thumbnailfilein
> > > > ContentFile your just returning the rawfilefrom the string IO.  To
> > > > use the the ImageField django provides you must provide it with afile
> > > > that is in a special wrapper called ContentFile.  I would suggest
> > > > trying this:
>
> > > > from django.core.files.base import ContentFile   (import this function
> > > > at the top of your view or where ever you put def resize_image)
>
> > > > change the last line of def resize_image from "return o.getvalue()" to
> > > > "return ContentFile(o.getvalue())"
>
> > > > I would also recommend changing "new_profile.picture.save(filename,
> > > > thumbnail_content)" to "new_profile.picture.save(filename,
> > > > thumbnail_content, save=False)" so that you are not hitting the
> > > > database twice.
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Re: S3Storage.py and Thumbnails using PIL (IOError / cannot identify image file)

[brianmac44]

I had the same problem two weeks ago. This is what I wrote:

def resize_photo(self,content,size):
img = Image.open(ContentFile(content))
img.thumbnail(size, Image.ANTIALIAS)
io = StringIO.StringIO()
img.save(io, 'PNG')
return ContentFile(io.getvalue())

Hope this helps.

-Brian

On Dec 22, 4:41 am, Merrick  wrote:
> Thank you I tried that and I still get the same error.
>
> I spent a little more time looking at PIL / Image.py and cleaning up
> the code. From what I can tell the Image.open method is having trouble
> with what I am passing to it.
>
> def resize_image(file, size=(50, 50)):
>     from PIL import Image
>     from cStringIO import StringIO
>     from django.core.files.base import ContentFile
>
>     image_data = StringIO(file.read())
>
>     ### this line below is where the issue is ###
>     image = Image.open(image_data)
>
>     if image.mode not in ('L', 'RGB'):
>         image = image.convert('RGB')
>     image.thumbnail(size, Image.ANTIALIAS)
>     o = StringIO()
>     image.save(o, "JPEG")
>     return  ContentFile(o.getvalue())
>
> This is how I call it:
>             picture = pform.cleaned_data['picture']
>             thumbnail_content = resize_image(picture)
>
> Thank you for looking at this.
>
> On Dec 21, 3:08 pm, "j...@zigzap.com"  wrote:
>
> > From what I can tell your not wrapping the thumbnailfilein
> > ContentFile your just returning the rawfilefrom the string IO.  To
> > use the the ImageField django provides you must provide it with afile
> > that is in a special wrapper called ContentFile.  I would suggest
> > trying this:
>
> > from django.core.files.base import ContentFile   (import this function
> > at the top of your view or where ever you put def resize_image)
>
> > change the last line of def resize_image from "return o.getvalue()" to
> > "return ContentFile(o.getvalue())"
>
> > I would also recommend changing "new_profile.picture.save(filename,
> > thumbnail_content)" to "new_profile.picture.save(filename,
> > thumbnail_content, save=False)" so that you are not hitting the
> > database twice.
>
>
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Re: Nested for loops in template

[brianmac44]

That worked. I just updated my entries model to include comments =
generic.GenericRelation(FreeThreadedComment)

Thanks.

-Brian

On Jul 18, 12:30 pm, "Scott Moonen" <[EMAIL PROTECTED]> wrote:
> Brian, I think the solution is to add a GenericRelation to your entries
> model; 
> seehttp://www.djangoproject.com/documentation/contenttypes/#reverse-gene...
> an explanation.  I think that after doing this you'll be able to
> access
> p.comments.count (assuming that the generic relation is named "comments").
> I haven't used the contenttypes framework yet, but from the looks of it I
> believe that will work.
>
>   -- Scott
>
>
>
> On Fri, Jul 18, 2008 at 12:21 PM, brianmac44 <[EMAIL PROTECTED]> wrote:
>
> > Hi Scott,
> > Thanks for your help, but I'm still having trouble.
> > I using django-threadedcomments
> >http://code.google.com/p/django-threadedcomments/
> > so its a little confusing.
>
> > Here are my models
> >http://dpaste.com/65848/
>
> > -Brian
>
> > On Jul 18, 12:01 pm, "Scott Moonen" <[EMAIL PROTECTED]> wrote:
> > > Brian, without knowing exactly how your models are configured, you can do
> > > something like this:
>
> > > {{ p.comment_set.count }}
>
> > > If you use it in more than one place (e.g., as {% if p.comment_set.count
> > %}
> > > ... {{ p.comment_set.count }} ...), you will want to optimize things so
> > that
> > > the SQL "COUNT()" query is executed only once:
>
> > > {% with p.comment_set.count as comment_count %}
> > >   {% if comment_count %} . . . {{ comment_count }} . . . {% endif %}
> > > {% endwith %}
>
> > > If you have any trouble getting this working, please let us have a look
> > at
> > > your entry and comment models (use dpaste.com) and we can help you
> > figure
> > > out exactly what to write.
>
> > >   -- Scott
>
> > > On Fri, Jul 18, 2008 at 11:47 AM, brianmac44 <[EMAIL PROTECTED]> wrote:
>
> > > > I have two tables, one is entries and the other is comments.
>
> > > > In the template I would like display how many comments for each entry
> > > > and some other entry data.
> > > > So far I have...
>
> > > > view:
> > > > entries_list = entries.objects.filter( ...)
>
> > > > template:
> > > > {% for p in object_list %}
> > > > 
> > > >        
> > > >                {{ p.name }}
> > > >        
> > > >         
> > > >                ...
> > > >        
> > > > 
> > > > {% endfor %}
>
> > > > How is this done? Should I use select_related in the view?
> > > > Thanks in advance.
>
> > > --http://scott.andstuff.org/|http://truthadorned.org/<http://scott.andstuff.org/%7Chttp://truthadorned.org/>
>
> --http://scott.andstuff.org/|http://truthadorned.org/
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Re: Nested for loops in template

[brianmac44]

Hi Scott,
Thanks for your help, but I'm still having trouble.
I using django-threadedcomments 
http://code.google.com/p/django-threadedcomments/
so its a little confusing.

Here are my models
http://dpaste.com/65848/

-Brian

On Jul 18, 12:01 pm, "Scott Moonen" <[EMAIL PROTECTED]> wrote:
> Brian, without knowing exactly how your models are configured, you can do
> something like this:
>
> {{ p.comment_set.count }}
>
> If you use it in more than one place (e.g., as {% if p.comment_set.count %}
> ... {{ p.comment_set.count }} ...), you will want to optimize things so that
> the SQL "COUNT()" query is executed only once:
>
> {% with p.comment_set.count as comment_count %}
>   {% if comment_count %} . . . {{ comment_count }} . . . {% endif %}
> {% endwith %}
>
> If you have any trouble getting this working, please let us have a look at
> your entry and comment models (use dpaste.com) and we can help you figure
> out exactly what to write.
>
>   -- Scott
>
>
>
> On Fri, Jul 18, 2008 at 11:47 AM, brianmac44 <[EMAIL PROTECTED]> wrote:
>
> > I have two tables, one is entries and the other is comments.
>
> > In the template I would like display how many comments for each entry
> > and some other entry data.
> > So far I have...
>
> > view:
> > entries_list = entries.objects.filter( ...)
>
> > template:
> > {% for p in object_list %}
> > 
> >        
> >                {{ p.name }}
> >        
> >         
> >                ...
> >        
> > 
> > {% endfor %}
>
> > How is this done? Should I use select_related in the view?
> > Thanks in advance.
>
> --http://scott.andstuff.org/|http://truthadorned.org/
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Nested for loops in template

[brianmac44]

I have two tables, one is entries and the other is comments.

In the template I would like display how many comments for each entry
and some other entry data.
So far I have...

view:
entries_list = entries.objects.filter( ...)

template:
{% for p in object_list %}


{{ p.name }}

 
...


{% endfor %}

How is this done? Should I use select_related in the view?
Thanks in advance.

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