Created
February 10, 2014 14:22
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A flask server for serving all JPEG images in a local directory and subdirectories. Uses unveil.js for lazy-loading of images. Thumbnails are created on the fly by PIL.
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| #!/bin/python | |
| import os | |
| from flask import Flask, Response, request, abort, render_template_string, send_from_directory | |
| import Image | |
| import StringIO | |
| app = Flask(__name__) | |
| WIDTH = 1000 | |
| HEIGHT = 800 | |
| TEMPLATE = ''' | |
| <!DOCTYPE html> | |
| <html> | |
| <head> | |
| <title></title> | |
| <meta charset="utf-8" /> | |
| <style> | |
| body { | |
| margin: 0; | |
| background-color: #333; | |
| } | |
| .image { | |
| display: block; | |
| margin: 2em auto; | |
| background-color: #444; | |
| box-shadow: 0 0 10px rgba(0,0,0,0.3); | |
| } | |
| img { | |
| display: block; | |
| } | |
| </style> | |
| <script src="https://code.jquery.com/jquery-1.10.2.min.js" charset="utf-8"></script> | |
| <script src="http://luis-almeida.github.io/unveil/jquery.unveil.min.js" charset="utf-8"></script> | |
| <script> | |
| $(document).ready(function() { | |
| $('img').unveil(1000); | |
| }); | |
| </script> | |
| </head> | |
| <body> | |
| {% for image in images %} | |
| <a class="image" href="{{ image.src }}" style="width: {{ image.width }}px; height: {{ image.height }}px"> | |
| <img src="data:image/gif;base64,R0lGODlhAQABAAAAACH5BAEKAAEALAAAAAABAAEAAAICTAEAOw==" data-src="{{ image.src }}?w={{ image.width }}&h={{ image.height }}" width="{{ image.width }}" height="{{ image.height }}" /> | |
| </a> | |
| {% endfor %} | |
| </body> | |
| ''' | |
| @app.route('/<path:filename>') | |
| def image(filename): | |
| try: | |
| w = int(request.args['w']) | |
| h = int(request.args['h']) | |
| except (KeyError, ValueError): | |
| return send_from_directory('.', filename) | |
| try: | |
| im = Image.open(filename) | |
| im.thumbnail((w, h), Image.ANTIALIAS) | |
| io = StringIO.StringIO() | |
| im.save(io, format='JPEG') | |
| return Response(io.getvalue(), mimetype='image/jpeg') | |
| except IOError: | |
| abort(404) | |
| return send_from_directory('.', filename) | |
| @app.route('/') | |
| def index(): | |
| images = [] | |
| for root, dirs, files in os.walk('.'): | |
| for filename in [os.path.join(root, name) for name in files]: | |
| if not filename.endswith('.jpg'): | |
| continue | |
| im = Image.open(filename) | |
| w, h = im.size | |
| aspect = 1.0*w/h | |
| if aspect > 1.0*WIDTH/HEIGHT: | |
| width = min(w, WIDTH) | |
| height = width/aspect | |
| else: | |
| height = min(h, HEIGHT) | |
| width = height*aspect | |
| images.append({ | |
| 'width': int(width), | |
| 'height': int(height), | |
| 'src': filename | |
| }) | |
| return render_template_string(TEMPLATE, **{ | |
| 'images': images | |
| }) | |
| if __name__ == '__main__': | |
| app.run(debug=True, host='::') |
same here i also got stuck in that part of creating server
Does yours crashes too when tapping on the add to cart button or going to the shopping cart screen?
"The images should be named with the corresponding product ID, and jpg format is preferred. "
i really dont have any idea how to implement this..
same here it does crash
do you think the images have something to do with it? the crashing ?
do you think if we can put images the app wont crash anymore?
do you have any facebook account or email? so we can have a decent talk.
import os
from flask import Flask, Response, request, abort, render_template_string, send_from_directory
from PIL import Image
import StringIO
app = Flask(__name__)
WIDTH = 640
HEIGHT = 360
TEMPLATE = '''
<!DOCTYPE html>
<html>
<head>
<title></title>
<meta charset="utf-8" />
<style>
body {
margin: 0;
background-color: #333;
}
.image {
display: inline-block;
margin: 3em 14px;
background-color: #444;
box-shadow: 0 0 10px rgba(0,0,0,0.3);
}
img {
display: block;
}
</style>
<script src="https://code.jquery.com/jquery-1.10.2.min.js" charset="utf-8"></script>
<script src="http://luis-almeida.github.io/unveil/jquery.unveil.min.js" charset="utf-8"></script>
<script>
$(document).ready(function() {
$('img').unveil(1000);
});
</script>
</head>
<body>
{% for image in images %}
<a class="image" href="{{ image.src }}" style="width: {{ image.width }}px; height: {{ image.height }}px">
<img src="{{ image.src }}" data-src="{{ image.src }}?w={{ image.width }}&h={{ image.height }}" width="{{ image.width }}" height="{{ image.height }}" />
</a>
{% endfor %}
</body>
'''
@app.route('/<path:filename>')
def image(filename):
try:
w = int(request.args['w'])
h = int(request.args['h'])
except (KeyError, ValueError):
return send_from_directory('.', filename)
try:
im = Image.open(filename)
im.thumbnail((w, h), Image.ANTIALIAS)
io = StringIO.StringIO()
im.save(io, format='JPEG')
return Response(io.getvalue(), mimetype='image/jpeg')
except IOError:
abort(404)
return send_from_directory('.', filename)
@app.route('/')
def index():
images = []
for root, dirs, files in os.walk('.'):
files.sort()
for filename in [os.path.join(root, name) for name in files]:
if not filename.endswith('.png'):
continue
im = Image.open(filename)
w, h = im.size
aspect = 1.0*w/h
if aspect > 1.0*WIDTH/HEIGHT:
width = min(w, WIDTH)
height = width/aspect
else:
height = min(h, HEIGHT)
width = height*aspect
images.append({
'width': int(width),
'height': int(height),
'src': filename
})
return render_template_string(TEMPLATE, **{
'images': images
})
if __name__ == '__main__':
app.run(host="127.0.0.1", port="3000")
install flask, pillow
Save as app.py
Run
python app.py
Very helpful, thank you
I only had to change StringIO to BytesIO
Hello,
thank you a lot for this useful flask-app. I have a question:
If I run the app, then images in the same directory as app.py-file are displayed on website without any problems. If I change a directory to other path (not a subpath of current project), the app can lists the files, but doesn't display it. Can it be a rights issue? Or can you give me a hint, how I can solve this issue?
I thank you in advance for your help!
Thanks for this. I had to fix some indent stuff and a thing in the template. Have fun with it.
ps. replace if not filename.endswith('.jpg'): with you're extension
import os
from flask import Flask, Response, request, abort, render_template_string, send_from_directory
from PIL import Image
import StringIO
app = Flask(__name__)
WIDTH = 640
HEIGHT = 360
TEMPLATE = '''
<!DOCTYPE html>
<html>
<head>
<title></title>
<meta charset="utf-8" />
<style>
body {
margin: 0;
background-color: #333;
}
.image {
display: block;
margin: 2em auto;
background-color: #444;
box-shadow: 0 0 10px rgba(0,0,0,0.3);
}
img {
display: block;
}
</style>
<script src="https://code.jquery.com/jquery-1.10.2.min.js" charset="utf-8"></script>
<script src="http://luis-almeida.github.io/unveil/jquery.unveil.min.js" charset="utf-8"></script>
<script>
$(document).ready(function() {
$('img').unveil(1000);
});
</script>
</head>
<body>
{% for image in images %}
<a class="image" href="{{ image.src }}" style="width: {{ image.width }}px; height: {{ image.height }}px">
<img src="{{ image.src }}" data-src="{{ image.src }}?w={{ image.width }}&h={{ image.height }}" width="{{ image.width }}" height="{{ image.height }}" />
</a>
{% endfor %}
</body>
'''
@app.route('/<path:filename>')
def image(filename):
try:
w = int(request.args['w'])
h = int(request.args['h'])
except (KeyError, ValueError):
return send_from_directory('.', filename)
try:
im = Image.open(filename)
im.thumbnail((w, h), Image.ANTIALIAS)
io = StringIO.StringIO()
im.save(io, format='JPEG')
return Response(io.getvalue(), mimetype='image/jpeg')
except IOError:
abort(404)
return send_from_directory('.', filename)
@app.route('/')
def index():
images = []
for root, dirs, files in os.walk('.'):
files.sort()
for filename in [os.path.join(root, name) for name in files]:
if not filename.endswith('.jpg'):
continue
im = Image.open(filename)
w, h = im.size
aspect = 1.0*w/h
print filename
if aspect > 1.0*WIDTH/HEIGHT:
width = min(w, WIDTH)
height = width/aspect
else:
height = min(h, HEIGHT)
width = height*aspect
images.append({
'width': int(width),
'height': int(height),
'src': filename
})
return render_template_string(TEMPLATE, **{
'images': images
})
if __name__ == '__main__':
app.run(host="127.0.0.1", port=3000)
Extremely Thanks for the code. I had been trying this for past 6 hours!!
After having trouble with all the scripts posted so far I made my own. Python 3.5+ compatible.
Here are the changes I had to make:
- Change
import Imagetofrom PIL import Image - Change
import StringIOtofrom io import BytesIO - Change
io = StringIO.StringIO()toio = BytesIO() - Change
$('img').unveil(1000);to$('img').unveil(); - Change
<script src="http://luis-almeida.github.io/unveil/jquery.unveil.min.js" charset="utf-8"></script>to<script src="jquery.unveil.js" charset="utf-8"></script> - Download the
jquery.unveil.jsscript and place it in the same file as theserver.py
You can find the updated code in my gist
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How can i put images? how can i make this server running on the app.. its been hours and still i dont have the solution.. please someone help me..