Chapter 5: Security - A Brief Introduction¶
In the previous chapter, we created our first table intended to store business data. In a business application such as Flectra, one of the first questions to consider is who1 can access the data. Flectra provides a security mechanism to allow access to the data for specific groups of users.
The topic of security is covered in more detail in Advanced B: ACL and Record Rules. This chapter aims to cover the minimum required for our new module.
Data Files (CSV)¶
Flectra is a highly data driven system. Although behavior is customized using Python code, part of a
module’s value is in the data it sets up when loaded. One way to load data is through a CSV
file. One example is the
list of country states
which is loaded at installation of the
"id","country_id:id","name","code" state_us_1,us,"Alabama","AL" state_us_2,us,"Alaska","AK" state_us_3,us,"Arizona","AZ" state_us_4,us,"Arkansas","AR" ...
idis an external identifier. It can be used to refer to the record (without knowing its in-database identifier).
country_id:idrefers to the country by using its external identifier.
nameis the name of the state.
codeis the code of the state.
These three fields are
By convention, a file importing data is located in the
data folder of a module. When the data
is related to security, it is located in the
security folder. When the data is related to
views and actions (we will cover this later), it is located in the
Additionally, all of these files must be declared in the
list within the
__manifest__.py file. Our example file is defined
in the manifest of the base module.
Also note that the content of the data files is only loaded when a module is installed or updated.
The data files are sequentially loaded following their order in the
This means that if data
A refers to data
B, you must make sure that
is loaded before
Why is all this important for security? Because all the security configuration of a model is loaded through data files, as we’ll see in the next section.
Reference: the documentation related to this topic can be found in Access Rights.
Goal: at the end of this section, the following warning should not appear anymore:
WARNING rd-demo flectra.modules.loading: The model estate.property has no access rules...
When no access rights are defined on a model, Flectra determines that no users can access the data. It is even notified in the log:
WARNING rd-demo flectra.modules.loading: The model estate.property has no access rules, consider adding one. E.g. access_estate_property,access_estate_property,model_estate_property,base.group_user,1,0,0,0
Access rights are defined as records of the model
access right is associated with a model, a group (or no group for global
access) and a set of permissions: create, read, write and unlink2. Such access
rights are usually defined in a CSV file named
Here is an example for our previous
idis an external identifier.
nameis the name of the
model_id/idrefers to the model which the access right applies to. The standard way to refer to the model is
_nameof the model with the
_. Seems cumbersome? Indeed it is…
group_id/idrefers to the group which the access right applies to. We will cover the concept of groups in the advanced topic dedicated to the security.
perm_read,perm_write,perm_create,perm_unlink: read, write, create and unlink permissions
Add access rights.
ir.model.access.csv file in the appropriate folder and define it in the
Give the read, write, create and unlink permissions to the group
Tip: the warning message in the log gives you most of the solution ;-)
Restart the server and the warning message should have disappeared!
It’s now time to finally interact with the UI!
meaning which Flectra user (or group of users)
‘unlink’ is the equivalent of ‘delete’