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| 1 | +from flask import Flask, redirect, render_template, request, session, url_for |
| 2 | +from flask_dropzone import Dropzone |
| 3 | +from flask_uploads import UploadSet, configure_uploads, IMAGES, patch_request_class |
| 4 | + |
| 5 | +import os |
| 6 | + |
| 7 | +app = Flask(__name__) |
| 8 | +dropzone = Dropzone(app) |
| 9 | + |
| 10 | + |
| 11 | +app.config['SECRET_KEY'] = 'supersecretkeygoeshere' |
| 12 | + |
| 13 | +# Dropzone settings |
| 14 | +app.config['DROPZONE_UPLOAD_MULTIPLE'] = True |
| 15 | +app.config['DROPZONE_ALLOWED_FILE_CUSTOM'] = True |
| 16 | +app.config['DROPZONE_ALLOWED_FILE_TYPE'] = 'image/*' |
| 17 | +app.config['DROPZONE_REDIRECT_VIEW'] = 'results' |
| 18 | + |
| 19 | +# Uploads settings |
| 20 | +app.config['UPLOADED_PHOTOS_DEST'] = os.getcwd() + '/uploads' |
| 21 | + |
| 22 | +photos = UploadSet('photos', IMAGES) |
| 23 | +configure_uploads(app, photos) |
| 24 | +patch_request_class(app) # set maximum file size, default is 16MB |
| 25 | + |
| 26 | + |
| 27 | +@app.route('/', methods=['GET', 'POST']) |
| 28 | +def index(): |
| 29 | + |
| 30 | + # set session for image results |
| 31 | + if "file_urls" not in session: |
| 32 | + session['file_urls'] = [] |
| 33 | + # list to hold our uploaded image urls |
| 34 | + file_urls = session['file_urls'] |
| 35 | + |
| 36 | + # handle image upload from Dropszone |
| 37 | + if request.method == 'POST': |
| 38 | + file_obj = request.files |
| 39 | + for f in file_obj: |
| 40 | + file = request.files.get(f) |
| 41 | + |
| 42 | + # save the file with to our photos folder |
| 43 | + filename = photos.save( |
| 44 | + file, |
| 45 | + name=file.filename |
| 46 | + ) |
| 47 | + |
| 48 | + # append image urls |
| 49 | + file_urls.append(photos.url(filename)) |
| 50 | + |
| 51 | + session['file_urls'] = file_urls |
| 52 | + return "uploading..." |
| 53 | + # return dropzone template on GET request |
| 54 | + return render_template('index.html') |
| 55 | + |
| 56 | + |
| 57 | +@app.route('/results') |
| 58 | +def results(): |
| 59 | + |
| 60 | + # redirect to home if no images to display |
| 61 | + if "file_urls" not in session or session['file_urls'] == []: |
| 62 | + return redirect(url_for('index')) |
| 63 | + |
| 64 | + # set the file_urls and remove the session variable |
| 65 | + file_urls = session['file_urls'] |
| 66 | + session.pop('file_urls', None) |
| 67 | + |
| 68 | + return render_template('results.html', file_urls=file_urls) |
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