How to use function pass multiple params in policy？

[tonitrnel]

Your model:

[request_definition]
r = sub, dom, obj, act

[policy_definition]
p = sub_policy, dom, obj, act

[policy_effect]
e = some(where (p.eft == allow))

[matchers]
m = eval(p.sub_policy) && r.dom == p.dom && r.obj == p.obj && r.act == p.act

Your policy:

p, roleMatch('Author', r.sub.Roles), d01, /data1, read

Your request(s):

{ Rules: ["Author"] }, d01, /data1, read

I cannot use the roleMatch('Author', r.sub.Roles), It says Unclosed ( at character 75 after run the test, I guess it conflict with policy separator, How should i solve this problem?

[hsluoyz]

@closetool @tangyang9464

[tonitrnel]

I use space instead of comma, it works.

[tangyang9464]

@piecego
Why don't you use it like this m = roleMatch('Author', r.sub.Roles)

[tonitrnel]

@tangyang9464 Because it is dynamic.

[hsluoyz]

I use space instead of comma, it works.

@piecego what do you mean by this?

[tonitrnel]

I use space instead of comma, it works.

@piecego what do you mean by this?

p, roleMatch('Author' r.sub.Roles), d01, /data1, read

Use space symbol in after 'Author'

[kilosonc]

@piecego In fact, we don't know why it works, cause it shouldn't be.
Casbin parses csv file through https://pkg.go.dev/encoding/csv, you can find escape grammer here.
So the recommanded policy should be like this

p, "roleMatch('Author', r.sub.Roles)", d01, /data1, read

We will add this into docs too