from sqlalchemy.exceptions import IntegrityError
+from wtforms.validators import ValidationError
+from wtforms import *
+
+
+class ArtUploadForm(Form):
+ by = TextField('Artists')
+ file = FileField('Upload')
+ url = TextField('Link')
+
+ # TODO: make this general purpose
+ def validate_file(self, field):
+ if field.data == u'':
+ raise ValidationError('File is required')
+
+ # Also make this into a general User List field validator
+ """ PLEASE NOTE! I just realized that I need to have a __str__ method on User
+ to get it to write the usernames back in the form when it redisplays them, since
+ this validator turns them into user objects instead. This fact actually sounds dangerous
+ to me in the future, since it means I proably shouldn't be changing the data input
+ by the user right here in the validator, or the user will see the post-mangled data instead
+ of what they actually typed. Hm.
+
+ One solution to this could be to only look up the users after normal validation is over,
+ and then manually add validation errors to the form if that fails. But I think that kind of
+ sucks. Perhaps the ideology in Formish, where they keep Validation and Conversion as
+ separate tasks, is a better way of doing it? That way there is less risk of changing the user's
+ input -- you do that at the conversiot stage -- yet it is still encapsulated in the form workflow.
+ Hm. But that means I'd have to query for the users in the validation step and throw them away,
+ or something equally stupid. Guess there's no perfect solution here, but I thought it was
+ worth discussing.
+
+ Btw, this is meant to be used by a field with multi user autocompletion on it (like on stackoverflow tags),
+ so the user should never actually submit anything invalid unless they disable javascript and force it.
+ """
+ def validate_by(self, field):
+ if not field.data:
+ raise ValidationError("Needs at least one creator")
+ user_names = field.data.split()
+ users = []
+ # TODO: Could totally do a filter__in here instead of picking them out individually
+ for user_name in user_names:
+ user = User.get_by(name=user_name)
+ if not user:
+ raise ValidationError("Couldn't find user %s" % user_name)
+ users.append(user)
+ field.data = users
class ArtController(BaseController):
def __before__(self, id=None):
def new(self):
""" New Art! """
+ c.form = ArtUploadForm()
return render("/art/new.mako")
# TODO: login required
def create(self):
- # if 'file' not in request.params or not request.params['file']:
- # return "Validation Error: Needs a File"
-
-
- c.art = Art(uploader=c.user, **request.params)
- c.art.discussion = Discussion(count=0)
-
-
- artist = User.get_by(name=request.params['artist'])
- if not artist:
- return "Validation Error: Artist not found"
-
- relation = UserRelation(user=artist, kind="by", creator=c.user, art=c.art)
-
- try:
- elixir.session.commit()
- redirect(url('show_art', id=c.art.id))
- except IntegrityError:
- # hurr, there must be a better way to do this but I am lazy right now
- hash = c.art.hash
- elixir.session.rollback()
- duplicate_art = Art.get_by(hash=hash)
- h.flash("We already have that one.")
- redirect(url('show_art', id=duplicate_art.id))
+ c.form = ArtUploadForm(request.params)
+ if c.form.validate():
+
+ c.art = Art(uploader=c.user, **request.params)
+ c.art.discussion = Discussion(count=0)
+
+ for artist in c.form.by.data:
+ UserRelation(user=artist, kind="by", creator=c.user, art=c.art)
+
+ file = request.params['file']
+
+ try:
+ elixir.session.commit()
+ redirect(url('show_art', id=c.art.id))
+ except IntegrityError:
+ # hurr, there must be a better way to do this but I am lazy right now
+ hash = c.art.hash
+ elixir.session.rollback()
+ duplicate_art = Art.get_by(hash=hash)
+ h.flash("We already have that one.")
+ redirect(url('show_art', id=duplicate_art.id))
+
+ else:
+ ## TODO: JavaScript should be added to the upload form so that it is
+ ## impossible to submit the form when it contains any invalid users,
+ ## so this never happens. Only autocompled usernames should be allowed.
+ return render("/art/new.mako")
def show(self, id):