Beego/migration/doc.go

/* Package migration enables you to generate migrations back and forth. It generates both migrations.


//Creates a table
m.CreateTable("tablename","InnoDB","utf8");



//Alter a table
m.AlterTable("tablename")



//Standard Column Methods
* SetDataType
* SetNullable
* SetDefault
* SetUnsigned (use only on integer types unless produces error)


//Sets a primary column, multiple calls allowed, standard column methods available
m.PriCol("id").SetAuto(true).SetNullable(false).SetDataType("INT(10)").SetUnsigned(true)

//UniCol Can be used multiple times, allows standard Column methods. Use same "index" string to add to same index
m.UniCol("index","column")

//Standard Column Initialisation, can call .Remove() after NewCol("") on alter to remove
m.NewCol("name").SetDataType("VARCHAR(255) COLLATE utf8_unicode_ci").SetNullable(false)
m.NewCol("value").SetDataType("DOUBLE(8,2)").SetNullable(false)

//Rename Columns , only use with Alter table, doesn't works with Create, prefix standard column methods with "Old" to
//create a true reversible migration eg: SetOldDataType("DOUBLE(12,3)")
m.RenameColumn("from","to")...


//Foreign Columns, single columns are only supported, SetOnDelete & SetOnUpdate are available, call appropriately.
//Supports standard column methods, automatic reverse.
m.ForeignCol("local_col","foreign_col","foreign_table")

*/
package migration