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Flask Error-Could not build url for endpoint 'index'. Did you forget to specify value
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Flask Error-Could not build url for endpoint 'index'. Did you forget to specify value
#1
Hi ,

I have written an flask app.

This app allow users to upload images, if i run this app locally this app uploads images and saves it to the path which i have designated

Now i want to create a query string for my app where i will create urls and send it to people to upload images.

but when i run my app i receive this error

Error:
werkzeug.routing.BuildError: Could not build url for endpoint 'index'. Did you forget to specify values ['property_id']? Traceback (most recent call last) File "C:\Users\prince.bhatia\AppData\Local\Programs\Python\Python36\lib\site-packages\flask\app.py", line 2309, in __call__ return self.wsgi_app(environ, start_response) File "C:\Users\prince.bhatia\AppData\Local\Programs\Python\Python36\lib\site-packages\flask\app.py", line 2295, in wsgi_app response = self.handle_exception(e) File "C:\Users\prince.bhatia\AppData\Local\Programs\Python\Python36\lib\site-packages\flask\app.py", line 1741, in handle_exception reraise(exc_type, exc_value, tb) File "C:\Users\prince.bhatia\AppData\Local\Programs\Python\Python36\lib\site-packages\flask\_compat.py", line 35, in reraise raise value File "C:\Users\prince.bhatia\AppData\Local\Programs\Python\Python36\lib\site-packages\flask\app.py", line 2292, in wsgi_app response = self.full_dispatch_request() File "C:\Users\prince.bhatia\AppData\Local\Programs\Python\Python36\lib\site-packages\flask\app.py", line 1815, in full_dispatch_request rv = self.handle_user_exception(e) File "C:\Users\prince.bhatia\AppData\Local\Programs\Python\Python36\lib\site-packages\flask\app.py", line 1718, in handle_user_exception reraise(exc_type, exc_value, tb) File "C:\Users\prince.bhatia\AppData\Local\Programs\Python\Python36\lib\site-packages\flask\_compat.py", line 35, in reraise raise value File "C:\Users\prince.bhatia\AppData\Local\Programs\Python\Python36\lib\site-packages\flask\app.py", line 1813, in full_dispatch_request rv = self.dispatch_request() File "C:\Users\prince.bhatia\AppData\Local\Programs\Python\Python36\lib\site-packages\flask\app.py", line 1799, in dispatch_request return self.view_functions[rule.endpoint](**req.view_args) File "C:\Users\prince.bhatia\Desktop\python-projects\new\app.py", line 77, in index return render_template('index.html', property_id= property_id) File "C:\Users\prince.bhatia\AppData\Local\Programs\Python\Python36\lib\site-packages\flask\templating.py", line 135, in render_template context, ctx.app) File "C:\Users\prince.bhatia\AppData\Local\Programs\Python\Python36\lib\site-packages\flask\templating.py", line 117, in _render rv = template.render(context) File "C:\Users\prince.bhatia\AppData\Local\Programs\Python\Python36\lib\site-packages\jinja2\asyncsupport.py", line 76, in render return original_render(self, *args, **kwargs) File "C:\Users\prince.bhatia\AppData\Local\Programs\Python\Python36\lib\site-packages\jinja2\environment.py", line 1008, in render return self.environment.handle_exception(exc_info, True) File "C:\Users\prince.bhatia\AppData\Local\Programs\Python\Python36\lib\site-packages\jinja2\environment.py", line 780, in handle_exception reraise(exc_type, exc_value, tb) File "C:\Users\prince.bhatia\AppData\Local\Programs\Python\Python36\lib\site-packages\jinja2\_compat.py", line 37, in reraise raise value.with_traceback(tb) File "C:\Users\prince.bhatia\Desktop\python-projects\new\templates\index.html", line 14, in top-level template code {{ dropzone.create(action_view='index') }} File "C:\Users\prince.bhatia\AppData\Local\Programs\Python\Python36\lib\site-packages\flask_dropzone\__init__.py", line 330, in create action_url = url_for(action_view, **kwargs) File "C:\Users\prince.bhatia\AppData\Local\Programs\Python\Python36\lib\site-packages\flask\helpers.py", line 356, in url_for return appctx.app.handle_url_build_error(error, endpoint, values) File "C:\Users\prince.bhatia\AppData\Local\Programs\Python\Python36\lib\site-packages\flask\app.py", line 2061, in handle_url_build_error reraise(exc_type, exc_value, tb) File "C:\Users\prince.bhatia\AppData\Local\Programs\Python\Python36\lib\site-packages\flask\_compat.py", line 35, in reraise raise value File "C:\Users\prince.bhatia\AppData\Local\Programs\Python\Python36\lib\site-packages\flask\helpers.py", line 345, in url_for force_external=external) File "C:\Users\prince.bhatia\AppData\Local\Programs\Python\Python36\lib\site-packages\werkzeug\routing.py", line 1776, in build raise BuildError(endpoint, values, method, self) werkzeug.routing.BuildError: Could not build url for endpoint 'index'. Did you forget to specify values ['property_id']? The debugger caught an exception in your WSGI application. You can now look at the traceback which led to the error. To switch between the interactive traceback and the plaintext one, you can click on the "Traceback" headline. From the text traceback you can also create a paste of it. For code execution mouse-over the frame you want to debug and click on the console icon on the right side. You can execute arbitrary Python code in the stack frames and there are some extra helpers available for introspection: dump() shows all variables in the frame dump(obj) dumps all that's known about the object
below is the code
from flask import Flask, redirect, render_template, request, session, url_for, send_file
from flask_dropzone import Dropzone
from flask_uploads import UploadSet, configure_uploads, IMAGES, patch_request_class
from flask_sqlalchemy import SQLAlchemy
import os
import psycopg2
import csv

app = Flask(__name__)
db = SQLAlchemy(app)
dropzone = Dropzone(app)
#app.config["SQLALCHEMY_DATABASE_URI"]="postgres://qpnwgdxnihlitm:2[email protected]ec2-54-243-223-245.compute-1.amazonaws.com:5432/d1ssufnnr78nll?sslmode=require"
app.config["SQLALCHEMY_DATABASE_URI"]= "postgresql://postgres:[email protected]@localhost/images"
#app.config["SQLALCHEMY_DATABASE_URI"]='postgres://mapvmydehdyncf:7[email protected]ec2-23-21-165-188.compute-1.amazonaws.com:5432/d6lmau9918afdq?sslmode=require'
app.config['SECRET_KEY'] = 'supersecretkeygoeshere' 

# Dropzone settings
app.config['DROPZONE_UPLOAD_MULTIPLE'] = True
app.config['DROPZONE_ALLOWED_FILE_CUSTOM'] = True
app.config['DROPZONE_ALLOWED_FILE_TYPE'] = 'image/*'
app.config['DROPZONE_REDIRECT_VIEW'] = 'results'

# Uploads settings
app.config['UPLOADED_PHOTOS_DEST'] = '/uploads'

photos = UploadSet('photos', IMAGES)
configure_uploads(app, photos)
patch_request_class(app)  # set maximum file size, default is 16MB


class Data(db.Model):
    __tablename__ = "image"
    id=db.Column(db.Integer, primary_key=True)
    link = db.Column(db.String(1000000), unique=True)

    def __init__(self, link):
        self.link = link

@app.route("/<string:property_id>", methods=['GET', 'POST'])
def index(property_id):
    data = property_id
    
    # set session for image results
    if "file_urls" not in session:
        session['file_urls'] = []
    # list to hold our uploaded image urls
    file_urls = session['file_urls']

    # handle image upload from Dropszone
    if request.method == 'POST':
        file_obj = request.files
        for f in file_obj:
            file = request.files.get(f)
            
            # save the file with to our photos folder
            filename = photos.save(
                file,
                name=file.filename    
            )

            # append image urls
            
            file_urls.append(photos.url(filename))
            d = file_urls.append(photos.url(filename))
            
            for i in file_urls:
                data = Data(i)
                db.session.add(data)
                db.session.commit()


        session['file_urls'] = file_urls
        
        return "uploading..."
    # return dropzone template on GET request
        
    return render_template('index.html', property_id= property_id)


@app.route('/results')
def results():
    
    # redirect to home if no images to display
    if "file_urls" not in session or session['file_urls'] == []:
        return redirect(url_for('index'))
        
    # set the file_urls and remove the session variable
    file_urls = session['file_urls']
    session.pop('file_urls', None)
    dms = set(file_urls)
    get_length = len(dms)
    
    return render_template('results.html', dms=dms, get_length=get_length)

@app.route('/dashboard')
def dashboard():
    conn = psycopg2.connect("dbname='images' user='postgres' password='[email protected]' host='localhost' port='5432' ")
    print(conn)
    cur = conn.cursor()
    data = cur.execute("SELECT DISTINCT link FROM image")
    m_dict = cur.fetchall()

    filename = "Productivity.csv"
    with open("./"+filename,'w', encoding="utf-8") as csvfile:
        csvfile = csv.writer(csvfile, m_dict)
        csvfile.writerow(["Link"])
        for i in range(0, len( m_dict )):
            csvfile.writerow( m_dict[i]  )

    news = cur.execute("DELETE FROM image")
    conn.commit()
    return send_file(filename, attachment_filename="Data.csv", as_attachment=True)

if __name__=="__main__":
    app.run(debug=True)

#app.run(debug=True)
it is my index.html

<!DOCTYPE html>
<html>
    <head>
        <title>99Acres</title>
        {{ dropzone.load() }}
        {{ dropzone.style('border: 2px dashed #0087F7; margin: 10%; min-height: 400px;') }}
    </head>
    <body style="background-color:teal">
        <!--<h1 style="color:white;">99Acres</h1>-->
		<img align="right"src="https://img-d02.moneycontrol.co.in/news_image_files/2015/356x200/9/99acres_1902_356.jpg" width="80" height="80" alt="me">
		<h1 align="center" style="color:white">Welcome to 99acres image upload website</h1>
		<h3 align="center"style="color:white">Please Upload images in format[".JPG",".PNG",".JPEG"]</h3>
		<h3 align="center" style="color:white">**Please Note:Maximum Total image size is 5MB</h3> 
        {{ dropzone.create(action_view='index') }}
		<div class="list" align="center">
			<strong>Our Partners:</strong> <a href="http://www.naukri.com" class="">Naukri.com</a>-
			<a href="http://www.jeevansathi.com" class="" style="color:white">Jeevansathi Matrimonials</a>- <a href="http://www.icicicommunities.org" class="">ICICIcommunities.org </a><br>
			<br>
			<a href="../propadmin/" class=""style="color:white">Home </a>|| <a href="../property/about.php" class=""style="color:white">About Us </a>||
			<a href="/do/buyourservices/" class=""> Advertise with us </a>|| <a href="../property/terms.php" class=""style="color:white">Terms and Conditions</a> ||
			<a href="../property/contact.php" class=""style="color:white"> Contact us</a> ||<a href="../property/request_info.php" class=""style="color:white"> Reques1t info</a><br>
			<br>
			All rights reserved 2001 Info Edge India Ltd. 
		</div>
    </body>
</html>
it is my results.html

<body style="background-color:teal">
<h1 align="center" style="color:white">Below Images Uploaded Successfully</h1>
<a href="{{ url_for('index') }}">Back</a><p>

<ul>
{% for file_url in dms %}
    <img style="height: 150px" src="{{ file_url }}">
{% endfor %}
</ul>
<h1 align="center" style="color:white">You can close this page or upload more image</h1>
<h1 align="center" style="color:white">Total number of images are : {{get_length}}</h1> <br><br><br><br>
<div class="list" align="center">
			<strong>Our Partners:</strong> <a href="http://www.naukri.com" class="">Naukri.com</a>-
			<a href="http://www.jeevansathi.com" class="" style="color:white">Jeevansathi Matrimonials</a>- <a href="http://www.icicicommunities.org" class="">ICICIcommunities.org </a><br>
			<br>
			<a href="../propadmin/" class=""style="color:white">Home </a>|| <a href="../property/about.php" class=""style="color:white">About Us </a>||
			<a href="/do/buyourservices/" class=""> Advertise with us </a>|| <a href="../property/terms.php" class=""style="color:white">Terms and Conditions</a> ||
			<a href="../property/contact.php" class=""style="color:white"> Contact us</a> ||<a href="../property/request_info.php" class=""style="color:white"> Reques1t info</a><br>
			<br>
			All rights reserved 2001 Info Edge India Ltd. 
		</div>
</body>
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