old web2py blog

IS_LENGTH validator has now two arguments instead of one. Now it is possible to set minimal length of the field:

INPUT(_type='text', _name='name', requires=IS_LENGTH(maxsize=255,
                                                     minsize=0))

1. maxsize: maximum allowed length / size
2. minsize: minimum allowed length / size

Examples:

Check if text string is shorter than 33 characters:

INPUT(_type='text', _name='name', requires=IS_LENGTH(32))

Check if password string is longer than 5 characters:

INPUT(_type='password', _name='name', requires=IS_LENGTH(minsize=6))

Check if uploaded file has size between 1KB and 1MB:

INPUT(_type='file', _name='name', requires=IS_LENGTH(1048576, 1024))