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How Should I Declare Foreign Key Relationships Using Code First Entity Framework (4.1) in MVC3?
...Key("CustomerID")]
public virtual Customer Customer { get; set; }
EDIT based on Latest Code
You get that error because of this line:
[ForeignKey("Parent")]
public Patient Patient { get; set; }
EF will look for a property called Parent to use it as the Foreign Key enforcer. You can do 2 things...
Python glob multiple filetypes
... of extensions into a single glob pattern, you can do the following:
mask_base = r'music/*/*.'
exts = ['mp3', 'flac', 'wma']
chars = ''.join('[{}]'.format(''.join(set(c))) for c in zip(*exts))
mask = mask_base + chars + ('*' if len(set(len(e) for e in exts)) > 1 else '')
print(mask) # music/*/*...
Should functions return null or an empty object?
...serExist(id) would be appropriate if you do choose to throw an exception.
Based on extensive comments below: if this is an API-level design question, this method could be analogous to "OpenFile" or "ReadEntireFile". We are "opening" a user from some repository and hydrating the object from the resu...
How to add two strings as if they were numbers? [duplicate]
...cs for parseFloat
In parseInt radix is specified as ten so that we are in base 10. In nonstrict javascript a number prepended with 0 is treated as octal. This would obviously cause problems!
parseInt(num1, 10) + parseInt(num2, 10) //base10
parseFloat(num1) + parseFloat(num2)
Also see ChaosPandio...
What is a serialVersionUID and why should I use it?
...ion runtime will calculate a default serialVersionUID value for that class based on various aspects of the class, as described in the Java(TM) Object Serialization Specification. However, it is strongly recommended that all serializable classes explicitly declare serialVersionUID values, since the d...
What is the right way to override a setter method in Ruby on Rails?
...is also suggesting to use super like this:
class Model < ActiveRecord::Base
def attribute_name=(value)
# custom actions
###
super(value)
end
end
===========================================================================
Original Answer
If you want to override the setter me...
How to initialize a JavaScript Date to a particular time zone
...e any differently, they typically implement the standard IANA timezone database and provide functions for using it in JavaScript. Modern libraries use the time zone data supplied by the Intl API, but older libraries typically have overhead, especially if you are running in a web browser, as the dat...
What is the difference between \r and \n?
...
"\r" => Return
"\n" => Newline or Linefeed
(semantics)
Unix based systems use just a "\n" to end a line of text.
Dos uses "\r\n" to end a line of text.
Some other machines used just a "\r". (Commodore, Apple II, Mac OS prior to OS X, etc..)
...
Rails 4 Authenticity Token
...
For my Rails 4.0.8 based App it was enough to write =token_tag nil or (in .erb) <%= token_tag nil %>
– jmarceli
Nov 10 '14 at 20:40
...
Frontend tool to manage H2 database [closed]
How to use H2 database 's integrated managment frontend?
10 Answers
10
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