Tangram::Type/Array/Scalar - map Perl array of strings or numbers
use Tangram::Core; use Tangram::Type/Array/Scalar; # always $schema = Tangram::Schema->new( classes => { NaturalPerson => { fields => { flat_array => { interests => { table => 'NP_int', sql => 'VARCHAR(50)', }, lucky_numbers => 'int', # use defaults }
Maps references to a Perl array. The persistent fields are grouped in a hash under the array key in the field hash.
array
The array may contain only 'simple' scalars like integers, strings or real numbers. It may not contain references. For arrays of objects, see Tangram::Type::Array::FromMany and Tangram::Type::Array::FromOne.
Tangram uses a table to save the state of the collection. The table has three columns, which contain
the id of the container object
the position of the element in the array
the value of the element
The field names are passed in a hash that associates a field name with a field descriptor. The field descriptor may be either a hash or a string. The hash uses the following fields:
type
table
sql
Optional field type specifies the type of the elements. If the type is stringTangram quotes the values as they are passed to the database. Not specifying a type is exactly equivalent to specifying string.
string
Optional field table sets the name of the table that contains the elements. This defaults to 'C_F', where C is the class of the containing object and F is the field name.
Optional field sql specifies the type that deploy() (see Tangram::Deploy) should use for the column containing the elements. If this field is not present, the SQL type is derived from the type field: if type is string (or is absent) VARCHAR(255) is used; otherwise, the type field is interpreted as a SQL type.
If the descriptor is a string, it is interpreted as the value of the type field and all the other fields take the default value.
To install Tangram, copy and paste the appropriate command in to your terminal.
cpanm
cpanm Tangram
CPAN shell
perl -MCPAN -e shell install Tangram
For more information on module installation, please visit the detailed CPAN module installation guide.