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what is reverse() in Django
...) and you want to redirect the user to /foo/ (often the case on successful form submission).
You could just do:
return HttpResponseRedirect('/foo/')
But what if you want to change the url in future? You'd have to update your urls.py and all references to it in your code. This violates DRY (Don't...
Reshaping data.frame from wide to long format
...ble has also more parameters that the melt-function from reshape2. You can for example also specify the name of the variable-column:
library(data.table)
long <- melt(setDT(wide), id.vars = c("Code","Country"), variable.name = "year")
which gives:
> long
Code Country year value
1...
jsonify a SQLAlchemy result set in Flask [duplicate]
...
def dump_datetime(value):
"""Deserialize datetime object into string form for JSON processing."""
if value is None:
return None
return [value.strftime("%Y-%m-%d"), value.strftime("%H:%M:%S")]
class Foo(db.Model):
# ... SQLAlchemy defs here..
def __init__(self, ...):
...
What is ViewModel in MVC?
...ts the data that you want to display on your view/page, whether it be used for static text or for input values (like textboxes and dropdown lists) that can be added to the database (or edited). It is something different than your domain model. It is a model for the view.
Let us say that you have an...
Correct way of using JQuery-Mobile/Phonegap together?
...
For all those who say it doesn't work - the order of declaring script matters. First include jquery, THEN THIS CODE inside a script element, then jquery mobile js.
– Manish
May 18 '13 at...
How do I execute inserts and updates in an Alembic upgrade script?
...
What you are asking for is a data migration, as opposed to the schema migration that is most prevalent in the Alembic docs.
This answer assumes you are using declarative (as opposed to class-Mapper-Table or core) to define your models. It shoul...
sql query to return differences between two tables
...t not in B, than the columns which come from B will be NULL, and similarly for those, which are present in B and not in A, the columns from A will be null.
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How do I add indices to MySQL tables?
...n "applied" to the data and the EXPLAIN query shows that there is no index for the field.
– Michael
Jun 9 '10 at 1:56
1
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SQL - find records from one table which don't exist in another
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yes - MySQL manual suggests that this is normal for an 'EXISTS' query
– Alnitak
Dec 17 '08 at 9:31
3
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Has Facebook sharer.php changed to no longer accept detailed parameters?
...rer will no longer accept custom parameters and facebook will
pull the information that is being displayed in the preview the same
way that it would appear on facebook as a post from the url OG meta
tags.
Use dialog/feeds instead of sharer.php
https://www.facebook.com/dialog/feed?
app_id=...