Action with condition not executed in workflow

Using Mayan EDMS
1

Hi everyone,

I did quite a few cool things with workflows already but there is one thing that I did not get to work yet properly in my setup.

I have a state with an action (do OCR) that should only be executed when a certain transition was used to get to this state. So I added the following condition to the action:

{% if workflow_instance.get_last_log_entry.transition.label == ‘OCR wiederholen’ %}
TRUE
{% endif %}

However even when the corresponding condition was used the action is not executed. Since the expression relies on the workflow instance I am unable to use the sandbox to test where my problem is but maybe anyone has an idea what is going on?

2

Hi,

I’m not really sure if methods are usable in Django templates like get_last_log_entry() is.
Instead you could try last_log_entry which is the exposed returing value of the function.

{% if workflow_instance.last_log_entry.transition.label == "OCR wiederholen" %}
TRUE
{% endif %}

By the way: double quotes " are used for string comparison in Django templates as far as I have seen, I do not know if single quotes are also valid?

3

OMG that looks promising. No idea why I added the „get“. Thank you I will try that.

I also used double quotes before, this was just another desperate attempt :sweat_smile:

4

Unfortunately it did not work. And now I know where I got the template from: It’s provided in the use interface when you select last protocol entry from the model attributes dropdown. So I guess it should be correct. But thank you anyway for your support!

It could also be that I got the page condition wrong in the configuration of the OCR action. As far as I understand it it should return any value so that the page gets updated OCR information. So I just put the constant TRUE in there. But maybe I don’t really understand this correctly or the translation is bad :man_shrugging:

Actually it could also be that the action „Update document page OCR content“ does not do what I expect it to do at all… I’m a bit confused because of the last configuration option in the action that refers to a template for a document page to update the OCR content. I left this empty but probably this is why I do not see any results

5

Certainly you have already tried:
to get an idea if the condition expression is correct you could replace the OCR action to something you can see immediate results from, maybe adding a tag or comment Action to the document (just for testing purpose). If this works then you know that the expression is ok…

6

As simple as the idea may sound I actually did not try this yet so thank you for this suggestion. I will definitely try to do this.

The more I think about it the more I come to the conclusion that I was actually wrong about the usage of the OCR action. It appears that there exists no action type that lets you enqueue a document in the OCR pipeline. Maybe I can use the Rest API via a http action instead.