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qr-labels
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Generating pritable labels

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master
Marek Baczynski 6 years ago
parent 5d6db5aea5
commit 4176c1afcd
4 changed files with 65 additions and 5 deletions
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24
qr-labels.py
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@ -6,7 +6,8 @@ from io import BytesIO
import json, random, re, string import json, random, re, string
app = Flask(__name__) app = Flask(__name__)
systemURL = 'http://192.168.0.11:5000/' systemURL = 'http://192.168.0.11:5000/' #FULL URL with a '/' at the end
systemURL = 'http://10.0.1.115:5000/'
randomchars = 'ABCDEFGHIJKLMNOPQRSTUVWXYZ123456789' #note the lack of zero randomchars = 'ABCDEFGHIJKLMNOPQRSTUVWXYZ123456789' #note the lack of zero
with open('links.json', 'r') as infile: with open('links.json', 'r') as infile:
@ -23,7 +24,7 @@ def randomToken():
return code return code
def codeValidation(code): def codeValidation(code):
if len(code) not in range (5,6): if len(code) not in range (3,10):
return False return False
if re.match('^[\w-]+$', code) is None: if re.match('^[\w-]+$', code) is None:
return False return False
@ -55,7 +56,15 @@ def serveCode(code):
code = code[:code.find('.')] code = code[:code.find('.')]
if codeValidation(code) is False: if codeValidation(code) is False:
return send_file('static/invalid.png', mimetype='image/png') return send_file('static/invalid.png', mimetype='image/png')
img = qrcode.make(systemURL + code) qr = qrcode.QRCode(
version=1,
error_correction=qrcode.constants.ERROR_CORRECT_M,
box_size=8,
border=3,
)
qr.add_data('systemURL + code')
qr.make(fit=True)
img = qr.make_image(fill_color="black", back_color="white")
return serveImage(img) return serveImage(img)
@app.route("/edit", methods=['GET', 'POST']) @app.route("/edit", methods=['GET', 'POST'])
@ -87,7 +96,14 @@ def generate():
howmany = request.form.get("howmany") howmany = request.form.get("howmany")
if howmany is None: if howmany is None:
return render_template('generate.html') return render_template('generate.html')
return render_template("message.html", message="Totally generated {} many codes right now.".format(howmany)) codes = []
for i in range(0, int(howmany)):
codes.append(createNewCode())
columns = 4
codesarray = [codes[i:i+columns] for i in range(0, len(codes), columns)]
saveFile()
humanSystemURL = systemURL[systemURL.find('//')+2:]
return render_template("printlabels.html", codes=codesarray, systemURL=humanSystemURL, codegenURL=systemURL+'code/', format='.png')
@app.route("/list") @app.route("/list")
def list(): def list():

16
static/printstyle.css
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@ -0,0 +1,16 @@
body {
font-size: small;
color: #3B3B3B;
font-family: "Lucida Console", Monaco, monospace;
font-weight: 600;
}
td {
text-align: center;
padding: 10px;
}
p {
margin: 1px;
padding: 0px;
}

2
templates/generate.html
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@ -3,7 +3,7 @@
{% block content %} {% block content %}
<form action=/generate method="post"> <form action=/generate method="post">
How many?:<br /> How many?:<br />
<input type="number" name="howmany" value="20"/><br /> <input type="number" name="howmany" value="16"/><br />
<button type="submit" class="graybar" >Generate </button><br /> <button type="submit" class="graybar" >Generate </button><br />
Note: It is best to print the generated codes immediatly from the result of this generation. Note: It is best to print the generated codes immediatly from the result of this generation.
</form> </form>

28
templates/printlabels.html
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@ -0,0 +1,28 @@
<!DOCTYPE html>
<html>
<head>
<title>Printing QR labels</title>
<link rel="stylesheet" type="text/css" href="{{ url_for('static', filename='printstyle.css') }}">
</head>
<body>
<table>
<tbody>
{% for row in codes %}
<tr>
{% for code in row %}
<td>
<img src="{{codegenURL}}{{code}}{{format}}" />
<p>ELAB KNOWLEDGE SYSTEM</p>
<p>{{systemURL}}{{code}}</p>
</td>
{% endfor %}
</tr>
{% endfor %}
</tbody>
</table>
</body>
</html>
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