Validation

Ruby
1

Hi all…i am newb for rails as well as ruby
I have Column called Description In My Table.
I would Like to Validate That Description Column.
That is It Should Only Contain Texts Not Images.
What Do I DO With Using Regular Expressions?

Any Advices Regarding This???

2

Newb N. wrote:

Hi all…i am newb for rails as well as ruby

The best group for Rails questions is:

http://groups.google.com/group/rubyonrails-talk

But you should read /Agile Web D. with Rails/, by the Daves,
before
asking any questions there.

I have Column called Description In My Table.
I would Like to Validate That Description Column.
That is It Should Only Contain Texts Not Images.

Validations are not invariants, they are part of user interaction. How
will your
users put content into the description? If they post it thru a

, it already is only ASCII (actually UTF-8) text. cannot absorb rich text input with pictures. > What Do I DO With Using Regular Expressions? Some validation directives accept a regexp, but you need to characterize what an "image" would look like in your input before bouncing it. If, for example, you allow users to enter raw HTML, and you will mark it up when displaying it, you could write a regexp against "<img". But this will fail if the user wanted a cleartext "<img" in their message, and it will fail to remove '<object' and '