db_schema — Database Schema Management Module

Syncs a database table to the DocType (metadata) Note This module is only used internally

db_schema.updatedb(dt)

Syncs a DocType to the table * creates if required * updates columns * updates indices

db_schema.getcoldef(ftype, length='')

converts the user defined field types (ftype) to database fieldtypes example: Data becomes varchar(180)

Default field lengths:

• 180 - Data / Select / Link / Read Only / Password
• 14,2 - Currency
• 14,6 - Float

db_schema.updatecolumns(doctype)

Updates columns from the DocType to the table

• adds a column if new
• changes the name if oldfieldname != fieldname
• changes the type

db_schema.updateindex(doctype)

Adds / removes indices from the given doctype table

db_schema.update_engine(doctype=None, engine='InnoDB')

Not used: Updated the MySQL table engine

db_schema.create_table(dt)

Creates a table for a new doctype

Standard fields of a record

• name: ID / primary key
• owner: creator of the record
• creation: datetime of creation
• modified: datetime of last modification
• modified_by : last updating user
• docstatus : Status 0 - Saved, 1 - Submitted, 2- Cancelled
• parent : if child (table) record, this represents the parent record
• parenttype : type of parent record (if any)
• parentfield : table fieldname of parent record (if any)
• idx : Index (sequence) of the child record