Monday, 17 August 2015

one2many, many2many, many2one field in openerp

In OpenERP/Odoo, we have one2many and many2many datatype field. For add, update, delete we have some trick to link with record, which are listed below.

1. (0, 0,  { values })    link to a new record that needs to be created with the given values dictionary

2. (1, ID, { values })    update the linked record with id = ID (write *values* on it)

3. (2, ID)                     remove and delete the linked record with id = ID (calls unlink on ID, that will delete the object completely, and the link to it as well)

4. (3, ID)                     cut the link to the linked record with id = ID (delete the relationship between the two objects but does not delete the target object itself)

5. (4, ID)                     link to existing record with id = ID (adds a relationship)

6. (5)                          unlink all (like using (3,ID) for all linked records)

7. (6, 0, [IDs])             replace the list of linked IDs (like using (5) then (4,ID) for each ID in the list of IDs)

one2mnay we will use 1,2,3 points and for many2many we will use all the points.

For many2one field we only need to set record ID.

For more details, Please visit Odoo documentation

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