this may seem silly but i just noticed that if in mysql the column
which is a tinyint(1) happens 2 or greater, by a chance of glitch or
corruption in the database(i did it manually ofcourse but i am
speaking hypothetically), rails would see it as false. but i find that
really wrong seeing how in mysql it sees any non-zeroes as true.
In regards to MySQL, tinyint( 1 ) represents the following range of values:
-128 to 127
Next, MySQL documents says the following which they have been saying for the longest:
“We intend to implement full boolean type handling, in accordance with standard SQL, in a future MySQL release.” 5.0
“We intend to implement full boolean type handling, in accordance with standard SQL, in a future MySQL release.” 5.1
“We intend to implement full boolean type handling, in accordance with standard SQL, in a future MySQL release.” 6.0
If you’re requiring better boolean handling, I would recommend switching to PostgreSQL. For example,
Valid literal values for the “true” state are:
TRUE
't'
'true'
'y'
'yes'
'1'For the “false” state, the following values can be used:
FALSE
'f'
'false'
'n'
'no'
`‘0’
Next, I really don’t want exceptions firing off because I inserted values into the database to
test a hypothesis. You can probably do this for every type with MySQL. I would recommend
sanitizing and/or validating your input before entering it into the database.
`
i really think if it does happen to be any number other than 1 or 0 it
should throw an exception saying the data is corrupted or something
because rails should only return 0 or 1. am i crazy for thinking like
this?
Again, you should validate your input. If it’s a check box, the state is
either 1 or 0 by definition.
also can somebody point to me where in the code it does the tinyint(1)
to boolean conversion? or could that possibly be a mysql thing?
In short, Rails is following MySQL definition of what a boolean is and how
it is to evaluated and you should be able to find the information in the
following file within the Rails source:
rails/activerecord/lib/active_record/connection_adapters/mysql_adapter.rb
Good luck,
-Conrad
what you have said
makes perfect sense.