form validation

form validation

by Matti Rautiainen -
Number of replies: 0

Hi,



at the moment I'm ceating my own plugin. For that purpose I copied

a standard plugin(-folder) (choice) and modified it. Now I need a special

input form. The input (A) should be subject to another

input B. The latter is a drop down box. The drop down box contains e.g. 

cow, pig, horse. If a user chooses e.g. 'horse' this should lead to a semantic

evaluation of input (A). In other words, if user fills out the form and hits

the add_action_button, the above mentioned should be called and may result in

an error message, if the cont of input (A) is not accepted.


Can I do this from within the plugin folder ? Or do have to make changes

in "formslib.php" ? 


Basicly I have an edit_form.php file in my plugin folder which  contains

a class like <pluginname>_entry_form extends moodleform as well as an

validation function. 


Do I need an AJAX-Call ? If so, how can I invoke Javascript in

Moodle 2.9.1 ? What would be the way here  ?

Can you get me started here ..?


Many Thanks!


Matti


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