Transitions are the paths between states.
If you tested the workflow we made in Lesson 2 - States, you will have noticed that every state could transition to every other state. That's the default behaviour of states – unless you specify otherwise.
We'll start with the transition from the Editing state to the Review state.
When we're in the Editing state, we only want a single choice – go to the Review state. For that, we need a
Edit your workflow, as shown in the previous lesson, and add
submit=Review parameter to the Editing state:
Notice that we put a | (a pipe character – that vertical, sometimes split, line near the Enter key on your keyboard) between the
taskable=true parameter and the
What are parameters?
Most Macros can have settings, called parameters.
Usually, parameters look like
name=value – for example,
taskable=true. However, some macros support a special Unnamed first parameter that only needs the
value part. You can see both types in the markup above.
Between the macro name, and the first parameter – regardless of whether it's a named or unnamed parameter – there must always be a colon ":".
And, between each parameter, there must be a pipe "|".
In our Review state, we want two possible transitions:
- If the content is
approved, we want to go to the Publish state
- If the content is
rejected, we want to go back to the Editing state
Let's make those changes to our workflow:
Once content is Published, we generally leave it in that state. However, what happens if someone edits it?
We can use the
updated transition to automatically move to another state – like the Editing state – if someone edits the content. Here's our updated workflow:
Now, try testing the transitions in your workflow.
Did you notice that there was only one option in the Editing state – to transition to the Review state, but not the Published state?
And when you transtiioned to the Review state, did you get stuck?
It's time fot the next lesson: