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How do you serialize a model instance in Django?
... object and that's all what django serializers need to correctly serialize it, eg.:
from django.core import serializers
# assuming obj is a model instance
serialized_obj = serializers.serialize('json', [ obj, ])
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Install a .NET windows service without InstallUtil.exe
I have a standard .NET windows service written in C#.
7 Answers
7
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Rails check if yield :area is defined in content_for
I want to do a conditional rendering at the layout level based on the actual template has defined content_for(:an__area) , any idea how to get this done?
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How to export table as CSV with headings on Postgresql?
I'm trying to export a PostgreSQL table with headings to a CSV file via command line, however I get it to export to CSV file, but without headings.
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e.printStackTrace equivalent in python
...ava's e.printStackTrace() that exactly traces the exception to what line it occurred and prints the entire trace of it.
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Understanding the map function
Apply function to every item of iterable and return a list of the results. If additional iterable arguments are passed, function must take that many arguments and is applied to the items from all iterables in parallel.
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How to convert ActiveRecord results into an array of hashes
... use as_json method which converts ActiveRecord objects to Ruby Hashes despite its name
tasks_records = TaskStoreStatus.all
tasks_records = tasks_records.as_json
# You can now add new records and return the result as json by calling `to_json`
tasks_records << TaskStoreStatus.last.as_json
ta...
Rename specific column(s) in pandas
...ta.rename(columns={'gdp':'log(gdp)'}, inplace=True)
The rename show that it accepts a dict as a param for columns so you just pass a dict with a single entry.
Also see related
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How to declare a global variable in php?
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If you have a set of functions that need some common variables, a class with properties may be a good choice instead of a global:
class MyTest
{
protected $a;
public function __construct($a)
{
$this->a = $a;
}
public function head()
{
echo $this->a;...
Python date string to date object
...follow
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edited Aug 1 '19 at 21:52
Alan W. Smith
20.7k33 gold badges6060 silver badges8484 bronze badges
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