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In a Django form, how do I make a field readonly (or disabled) so that it cannot be edited?
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Django 1.9 added the Field.disabled attribute: https://docs.djangoproject.com/en/stable/ref/forms/fields/#disabled
The disabled boolean argument, when set to True, disables a form field using the disabled HTML attribute so that it won’t be editable by users. Even if...
Origin null is not allowed by Access-Control-Allow-Origin
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@CiaranG I ran python -m SimpleHTTPServer from a command line and then went to localhost:8000, worked for me. Python comes preinstalled with Mac OS X; you may need to install if using another OS.
– Dave Liepmann
Jul 2...
Check if a string has white space
... '));
$('#whitespace2').html(hasWhiteSpace('123'));
});
<script src="https://cdnjs.cloudflare.com/ajax/libs/jquery/3.3.1/jquery.min.js"></script>
" ": <span id="whitespace1"></span><br>
"123": <span id="whitespace2"></span>
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How to get Sinatra to auto-reload the file after each change?
...e to reload other files using also_reload, dont_reload and after_reload -- https://github.com/sinatra/sinatra/pull/1150
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xcode-select active developer directory error
...eTools are installed after Xcode)
Solution:
Install Xcode (get it from https://appstore.com/mac/apple/xcode) if you don't have it yet.
Accept the Terms and Conditions.
Ensure Xcode app is in the /Applications directory (NOT /Users/{user}/Applications).
Point xcode-select to the Xcode app Develop...
How to make a Python script run like a service or daemon in Linux
...the UNIX Environment" for details (ISBN 0201563177)
http://www.erlenstar.demon.co.uk/unix/faq_2.html#SEC16
"""
try:
pid = os.fork()
if pid > 0:
# exit first parent
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jQuery get selected option value (not the text, but the attribute 'value')
... $(this).find('option').filter(':selected').text());
});
<script src="https://cdnjs.cloudflare.com/ajax/libs/jquery/1.12.4/jquery.min.js"></script>
<select>
<option value="1" selected>1 - Text</option>
<option value="2">2 - Text</option>
<opti...
How to view/delete local storage in Firefox?
...at plugin for Firebug that clones this nice feature in chrome. Check out:
https://addons.mozilla.org/en-US/firefox/addon/firestorage-plus/
It's developed by Nick Belhomme and updated regularly
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How to check for a JSON response using RSpec?
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There's also the json_spec gem, which is worth a look
https://github.com/collectiveidea/json_spec
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How to convert Set to Array?
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via https://speakerdeck.com/anguscroll/es6-uncensored by Angus Croll
It turns out, we can use spread operator:
var myArr = [...mySet];
Or, alternatively, use Array.from:
var myArr = Array.from(mySet);
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