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What is the difference between t.belongs_to and t.references in rails?
...d t.belongs_to ?
Why are we having those two different words? It seems to me they do the same thing?
Tried some Google search, but find no explanation.
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How to mock an import
...import sys
sys.modules['B'] = __import__('mock_B')
import A
print(A.B.__name__)
A.py:
import B
Note B.py does not exist, but when running test.py no error is returned and print(A.B.__name__) prints mock_B. You still have to create a mock_B.py where you mock B's actual functions/variables/etc. ...
Specify pane percentage in tmuxinator project
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tmux list-windows gave me the following output ( gist.github.com/2324001 ). How would the tmuxinator layout line look according to that output ?
– Goles
Apr 6 '12 at 23:38
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mysqli or PDO - what are the pros and cons? [closed]
...lace we're split between using mysqli and PDO for stuff like prepared statements and transaction support. Some projects use one, some the other. There is little realistic likelihood of us ever moving to another RDBMS.
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Unable to Cast from Parent Class to Child Class
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Just a note, the variable names aren't the same above.
– Jake Gaston
Nov 30 '16 at 19:56
5
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Understanding the basics of Git and GitHub [closed]
...on't collaborate with anybody so I don't know if this would be helpful for me.
3 Answers
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How to respond with HTTP 400 error in a Spring MVC @ResponseBody method returning String?
...lt;>(json,HttpStatus.OK);
UPDATE 1
after spring 4.1 there are helper methods in ResponseEntity could be used as
return ResponseEntity.status(HttpStatus.BAD_REQUEST).body(null);
and
return ResponseEntity.ok(json);
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What's the difference between session.Merge and session.SaveOrUpdate?
I notice sometimes with my parent/child objects or many-to-many relationships, I need to call either SaveOrUpdate or Merge . Usually, when I need to call SaveOrUpdate , the exception I get on calling Merge has to do with transient objects not being saved first.
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Having both a Created and Last Updated timestamp columns in MySQL 4.0
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From the MySQL 5.5 documentation:
One TIMESTAMP column in a table can have the current timestamp as the default value for initializing the column, as the auto-update value, or both. It is not possible to have the current timestamp be the defaul...
Rails: Logging the entire stack trace of an exception
I have been trying to figure out the right way to log a stack trace. I came across this link which states that logger.error $!, $!.backtrace is the way to go but that does not work for me log_error does. As per documentation I do not see how passing a second argument to the error method would ...