Filling Many2many field (odoo 8)

by

user_rel_ids = fields.Many2many(comodel_name=”course”,
relation=’user_course_rel’,
column1=’user_id’,
column2=’course_id’)

Or

user_rel_id = fields.Many2many('course')

For Filling Data (for add new relation)

user_rel_id = [(4,course_id)]

According to http://odoo4u.blogspot.com/2014/10/orm-methods.html, It says:
A full list of options is in the documentation for the class.
This same thing will apply for one2many

For a many2many and one2many field, a list of tuples is
expected. Here is the list of the tuple that is accepted, with the
corresponding semantics:

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

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

(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)

(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)

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

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

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

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