def create_tables():
from models import Image, Imageuri, ImageFragment, Metadata, Annotation
Image.create_table()
Imageuri.create_table()
ImageFragment.create_table()
Metadata.create_table()
Annotation.create_table()
def add_imageuri(self, uri, image):
"""
Adds an Imageuri object to a Image Object
"""
global ns_ma
try:
imageuri = Imageuri.get(uri=uri)
if imageuri.image == image:
return False
except Imageuri.DoesNotExist:
imageuri = Imageuri.create(
image=image,
uri=uri,
)
imageuri.save()
try:
imagefrag = ImageFragment.get(x=0, y=0, image=image)
urimeta = self.add_metadata(imagefrag, ns_ma)
self.add_annotation(urimeta, "relation", uri)
return True
except ImageFragment.DoesNotExist:
return False
return True
def addimage():
"""
if HTTP verb is POST the system checks, if the URI is already in the system
if YES, the user is being redirected to the image
if NOT, the image size is checked (for development, image width has to be < 680px)
if it is allowed, the image is being saved as object, metadata gets extracted
and the user is being redirected to the image page
***TODO***
- check if url is for an image!
--> Bad Request if not
"""
if request.method == 'POST' and request.form['imageuri']:
try:
imageuri = Imageuri.get(uri=request.form['imageuri'])
imageob = imageuri.image
flash('Dieses Bild ist bereits im System gespeichert. Bitte waehle eine andere URI.', 'error')
return redirect(url_for('image_detail', imageid=imageob.id))
except Imageuri.DoesNotExist:
imgsize = imgc.get_image_size(request.form['imageuri'])
imgc.check_image_size(imgsize)
if imgc.check_image_size(imgsize):
imageob = imgc.create_new_image(request.form['imageuri'], imgsize)
flash('Dein Bild wurde erfolgreich ans System uebertragen. Starte nun mit deinen Annotationen.')
return redirect(url_for('image_detail', imageid=imageob.id))
else:
flash('Dieses Bild ist zu gross. Bitte waehle ein Bild, dass maximal 680px breit ist!', 'error')
return redirect(url_for('addimage'))
return render_template('addimage.html')
def create_new_image(self, imguri, imgsize):
global gl_image
""" Creates a new image instance and queries
metadata thats already included in the file
resulting in new fragments, metadata and annotations
"""
imageob = Image.create(width=imgsize[0], height=imgsize[1],)
imageob.save()
imageuri = Imageuri.create(
image=imageob,
uri=imguri,
)
imageuri.save()
gl_image = imageob
self.extract_def_metadata(imguri)
return imageob
