Forum .LRN Q&A: dotLRN Configuration error ?

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1: dotLRN Configuration error ?
Posted by Venugopal Maddukuri on 11/03/02 10:44 AM
Hi All

I am not able to add 'New Class Instance' on my dotlrn install. There is no link for the same anywhere on the interface.

Heres what I have done till now:
I got dotLRN installed using the FAQ.
Then, I created
1. Users (prof, staff, students, site-wide-admin)
2. Terms (Fall, Spring)
3. Depts ( Comp sci, architect...)
4. Subjects ( Comp Sci Labs...)

following the dotlrn-install script by Peter Marklund and manually replicating the tclweb test scripts actions using the dotLRN web interface.

So for so good. But when i go to the 'classes' admin page below:
http://localhost:8002/dotlrn/admin/term?term_id=-1

I don't get any 'New Class Instance' link...
-----

Peters' dotlrn-install script to add classes looks like this.... (more explanations follow...)

proc get_class_add_urls_foreach_subject { server_url } {

    do_request "$server_url/dotlrn/admin/classes"

    set class_urls_list [list]

    # Loop over and add all links
    set errno "0"
    while { $errno == "0" } {
        set errno [catch {lappend class_urls_list [link find -next ~u "class-instance-new"]} error]
    }

    return $class_urls_list
}

proc setup_classes { server_url } {

    foreach link [get_class_add_urls_foreach_subject $server_url] {

        do_request $link
        form find ~n "add_class_instance"
        form submit

        #puts "add_class [response body]"

        form find ~a "add-instructor-2"
        field find ~n "search_text"
        field fill "Einstein"
        form submit

        #puts "add_instructor [response body]"

        link follow ~c "Einstein"
    }
}

--------

so the above scripts to add new classes, basically goes to the subject page at  /dotlrn/admin/classes

and searches for links to each Subject i.e. find class-instance-new. But the html source to that page does not have any 'class-instance-new' links....

neither do I see any in the User Interface, and I am stuck, not able to add any Class Instance..

so what am i missing out ?
any help would be greatly appreciated.

cherio
venu

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2: Re: dotLRN Configuration error ? (response to 1)
Posted by Venugopal Maddukuri on 11/03/02 11:05 AM
I think I will try again with the dotlrn-1-0 cvs copy..

Any inputs in the meantime would be great.Its been almost 12 hours now, since I have been fixing one problem after the other ;)

Some kind words would probably encourage me to spend another 12 hours !!!

cherio
venu

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3: Re: dotLRN Configuration error ? (response to 1)
Posted by Ben Adida on 11/03/02 05:09 PM
Did you create a term that includes dates in the present? You can't create classes for terms that are in the past.
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4: Re: Re: dotLRN Configuration error ? (response to 3)
Posted by Venugopal Maddukuri on 11/03/02 06:02 PM
Yes, there are three terms and one of them in the present.

Fall 01 Sept,02 - 01 Jan,03
Spring 01 Jan,03 - 31 Jun,03
...

System Date shows 03 Nov,02.

BTW:

The Subject Page at

/dotlrn/admin/class?class_key=computer-laboratory.computer-science-tripos-part-ia

gives me this message:
----
Note: You must create Terms to be able to create Classes, since these must be associated with Terms.
----
and the Term: Dropdown box, does not show any of the Terms I created. Whats the problem ?

----
Anyway, I am setting up another fresh install.
Now, I have got a copy of dotlrn-1-0 & oacs-4-6-test and I am repeating the install instructions with the new set.

Thanks for the help. I will comeback for more :)

cherio
venu

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5: Re: dotLRN Configuration error ? (response to 1)
Posted by Ben Adida on 11/03/02 06:07 PM
Here is one more pointer to trace this: when you've reinstalled, if there are still no terms showing up, look at the dotlrn_terms table directly in psql. See what's in there.
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6: Re: Re: dotLRN Configuration error ? (response to 5)
Posted by Venugopal Maddukuri on 11/03/02 10:04 PM
OK , I reinstalled and it works now on the dorlrn-1-0/oacs-4-6, though there are other errors.

Ben, you were right about the dates mismatch.
I rechecked the previous install and the term dates were entered as 01 September 0002  to 01 January 0003.

The problem was that the year field is not a drop down, and I was typing only the last 2 digits of the year.

I think we will see more stupid users like me in the future.
Its better to fix it in the User Interface. Either a validation or explicitly ask for a four digit year via drop down.
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Now, for the newer problems :)
dotlrn-1-0/oacs-4-6/postgresql-7-3/aolserver-3-4-2

0. There is no acs-notifications package in the oacs-4-6-core. The dotlrn installation asks for this package, however, I have not noticed any problem yet without it.

1. While installing the packages via APM, there is a dependency for acs-events >=0.1d ( don't remember the exact number) in the Calander pacakage
Solution: I installed all other packages, restarted aolserver and force installed the calander. Then restarted aolserver again and installed the remaining packages.

2. Unsolved Error:
On login as a Professor, under the FAQ box, I get the following error.

***portal::render_element show callback Error! ***
Database operation "select" failed (exception NSDB, "Query was not a statement returning rows.")

The same error occurs on clicking the 'Control Panel' link from the 'Class Home'

File Storage and Calander - main pages display without errors.

cherio
venu