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Rails update_attributes without save?
...name
attr_accessible :name, :is_admin, :as => :admin
end
user = User.new
user.assign_attributes({ :name => 'Josh', :is_admin => true }) # Raises an ActiveModel::MassAssignmentSecurity::Error
user.assign_attributes({ :name => 'Bob'})
user.name # => "Bob"
user.is_admin? # =&...
Liquibase lock - reasons?
...ceReleaseLock();
} catch (DatabaseException e) {
throw new LockException("Could not enforce getting the lock.", e);
}
super.waitForLock();
}
}
The code is enforcing the release of the lock. This can be useful in test set-ups where the release call might not ...
Difference between Select Unique and Select Distinct
...
Unique was the old syntax while Distinct is the new syntax,which is now the Standard sql.
Unique creates a constraint that all values to be inserted must be different from the others.
An error can be witnessed if one tries to enter a duplicate value.
Distinct results in th...
Java: Literal percent sign in printf statement
...unction () {
StackExchange.openid.initPostLogin('.new-post-login', 'https%3a%2f%2fstackoverflow.com%2fquestions%2f1708444%2fjava-literal-percent-sign-in-printf-statement%23new-answer', 'question_page');
}
);
...
Rebase a single Git commit
...em appear as if they were deleted from the old location and created at the new location. I suppose rebase would have taken care of that, but by now I've pushed upstream so I can't test that. In any case, beware if you have a similar situation.
– waldyrious
D...
Singular or plural controller and helper names in Rails
...aming should be plural and came case. e.g: :rails generate controller Dogs new index create delete destroy edit" ??
– BKSpurgeon
Oct 25 '15 at 5:48
...
Python: Why is functools.partial necessary?
...se a def anyway. Our benevolent leader has spoken!
– new123456
Feb 8 '12 at 0:51
5
@AlexMartelli ...
When to choose checked and unchecked exceptions
...tempts to read from an non-existing file, the caller can prompt them for a new filename. On the other hand, if the method fails due to a programming bug (invalid method arguments or buggy method implementation) there is nothing the application can do to fix the problem in mid-execution. The best it ...
“Server” vs “Data Source” in connection string
I'm new to SqlServer, right now I have SqlLocalDb installed to work locally. Good, but I can see two connection strings typically and both works:
...
Pretty-Print JSON in Java
...
GSON can do this in a nice way:
Gson gson = new GsonBuilder().setPrettyPrinting().create();
JsonParser jp = new JsonParser();
JsonElement je = jp.parse(uglyJSONString);
String prettyJsonString = gson.toJson(je);
...