model_form
Ruben.Moor
before I post my issues about model_form. Is it supposed to work
already?
Rodrigo Moraes
Hi,
It is supposed to work. It needs testing though (I personally don't
use this kind of automated form). Please let me know if you have any
issues.
-- rodrigo
Rodrigo Moraes
It is supposed to work. It needs a lot of testing, though (I
Ruben.Moor
first issue:
In the request handler:
self.MemberForm = model_form(Member)
def get(self, **kwargs):
context = {}
context['form'] = self.MemberForm(obj=member, field_args={
'first_name': {
'label':'Vorname',
},
})
In the template:
<td>{{ form.first_name.label }}:<td>{{ form.first_name() }}
Yields as a result:
<td><label for="first_name">First Name</label>:<td><input
id="first_name" name="first_name" type="text" value="" />
Where the label should be "Vorname" instead of "First Name" according
to the documentation in the source code right?
Ruben.Moor
even though the generated code was
<td><label for="first_name">First Name</label>:<td><input
id="first_name" name="first_name" type="text" value="" />
where the input is definitely not a textarea, in my handler I have
form = self.MemberForm(request.form)
member.first_name = form.first_name
I am not sure about "requets.form" as argument for the constructor.
The error on post is:
** BadValueError: Property first_name must be a str or unicode
instance, not a TextField **
I have TextField in the form, but "first_name" is not.
One minor thing: Should "model_form" to be found in
from tipfy.ext.model.form import model_form
or
from wtforms.ext.appengine.db import model_form
Right now there is no model in tipfy.ext in the tarball.
Thanks a lot!
/ruben
Ruben.Moor
I realize, that I probably cannot rely on the latest tarball to get
access to a working model_form but I should rather checkout the source
and use
tipfy.ext.model.form:model_form right?
Sorry for that!
I guess this will solve my issues ...
Rodrigo Moraes
> I realize, that I probably cannot rely on the latest tarball to get
> access to a working model_form but I should rather checkout the source
> and use
>
> tipfy.ext.model.form:model_form right?
>
> Sorry for that!
> I guess this will solve my issues ...
Hey ruben,
The module is now part of wtforms (although initially it was part of
tipfy). The docblock was never updated to reflect this, now I
realized. So the import you should use is:
from wtforms.ext.appengine.db import model_form
-- rodrigo
Ruben.Moor
issues from above remain.
Rodrigo Moraes
> first issue:
>
> In the request handler:
>
> self.MemberForm = model_form(Member)
> def get(self, **kwargs):
> context = {}
> context['form'] = self.MemberForm(obj=member, field_args={
> 'first_name': {
> 'label':'Vorname',
> },
> })
>
> In the template:
>
> <td>{{ form.first_name.label }}:<td>{{ form.first_name() }}
>
> Yields as a result:
> <td><label for="first_name">First Name</label>:<td><input
> id="first_name" name="first_name" type="text" value="" />
I'm looking back at these issues, sorry for the delay. I should have
spotted this at first when you posted. The example above is wrong. You
need to set field_args when you create the form, as in:
MemberForm = model_form(Member, field_args={
'label':'Vorname',
},
})
-- rodrigo
--
You received this message because you are subscribed to the Google Groups "tipfy" group.
To post to this group, send email to ti...@googlegroups.com.
To unsubscribe from this group, send email to tipfy+un...@googlegroups.com.
For more options, visit this group at http://groups.google.com/group/tipfy?hl=en.
Rodrigo Moraes
> second issue:
>
> even though the generated code was
>
> <td><label for="first_name">First Name</label>:<td><input
> id="first_name" name="first_name" type="text" value="" />
>
> where the input is definitely not a textarea, in my handler I have
>
> form = self.MemberForm(request.form)
> member.first_name = form.first_name
>
> I am not sure about "requets.form" as argument for the constructor.
> The error on post is:
>
> ** BadValueError: Property first_name must be a str or unicode
> instance, not a TextField **
You pass request.form to the form constructor to populate it:
request.form is where POST variables are stored in the request object
(Werkzeug uses .form for POST and .args for GET variables).
In this case, to pass the values from the form to the entity, you need
to use the field data attribute, as in:
form = self.MemberForm(request.form)
if form.validate():
member.first_name = form.first_name.data
I also added validation just as an example. Hope it makes sense.
Ruben.Moor
How to get the byte content of a file field?
member.pic is a BlobProperty,
form.pic is a FileField
I want to upload images.
/ruben
Rodrigo Moraes
> How to get the byte content of a file field?
>
> member.pic is a BlobProperty,
> form.pic is a FileField
>
> I want to upload images.
If it still helps, you need to access the files attribute from request
to access uploaded files. It returns a FileStorage object that you can
read() the contents to store in a blog., So, for example, to access
the <input type="file" name="pic"> from the form:
pic = request.files.get('pic').read()
WTForms won't handle the file data because it is framework agnostic (I
think I should add this support). So it is accessed directly from the
request. Below is a full example:
class MyForm(Form):
pic = fields.FileField('pic')
class FormHandler(RequestHandler):
def get(self):
return render_response('form.html', form=MyForm())
def post(self):
form = MyForm(request.form)
pic = request.files.get('pic').read()
return Response(pic, mimetype='image/png')
And the basic template form.html:
<form method="post" enctype="multipart/form-data" action="">
{{ form.pic() }}
<input type="submit" name="submit" value="submit">
</form>