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Do you know if I can use this Django
Ext.Direct router with ExtJS 4.0?
We recently switched from Ext3 to Ext4 (with Django as backend).
Our experience involved a lot of trouble with changes in the ExtJS 4 API (especially in the area of datagrid stores). All reasonable and good changes but huge. Given the activity of the GitHub project above (2/2010) I would judge it’s nearly 100% sure that it will not work with the current version of ExtJS.
On the other hand ExtJS4 has very good support for backend/frontend conversions (we got rid of a lot of conversions). So I assume there is not that much need for the Django router any more.
Can I use ExtJS library drawing (or
charts) to draw a hall where clients
can click on empty seats and purchase
a tickets?
This is a very special use case and far away form the charting approach in ExtJS (or any other charting lib I know of). ExtJS charts are working with data stores to display basically numerical data. I’m pretty sure you need to write this from scratch.
I’m new to JavaScript programming.
ExtJS is a very sophisticated framework. Prepare for serious stuff. These guys understand JavaScript very well and put it in action as if it is a “real” object oriented language (did I just wrote this – prepare for flamewars. 😉 ).
Seriously, you need to invest some time to understand their philosophy (but it’s worth the effort).