Condition DSL

You can define conditions using vectors of shape: [:function-name :value-path :arguments].

Where :function-name is one of the following: :and, :or, :pos?, :neg?, :zero?, :>, :>=, :<, :<=, :=, :always-true, :true?, :false?, :contains, :absent, :regex, :nil?, :not-nil?, :not=, :empty?, :not-empty?. These names refers to their analogous functions in the clojure.core namespace.

:value-path it's a vector to some value inside the state data. Think of it as a Clojure get-in function path vector.

:arguments are optional and should be concrete values.

Here's some examples:

;; Check if the user's age is more than 18 and less or equal 65
[:and
 [:> [:user :age] 18]
 [:<= [:user :age] 65]]

;; Check if the user's name is nil or empty string
[:or [:nil? [:user :name]]
 [:empty? [:user :name]]]

;; Check if the user's role is admin
[:contains [:user :roles] "admin"]

;; Check if the user's email is a gmail account
[:regex [:user :email] #"@gmail.com$"]