JSF 1.2 with JBoss 4.2. ajax4jsf
I have a complex JSF form with many components. One of the component is a data table. Initially, the data table is empty (no rows), just the header. I need to provide an Add button, when a user clicks this a new (empty) row appears. The row has various input text components. The user can fill in the data and click add (as many times as they like). The backing bean is in 'request' scope.
I have tried many ways to solve this problem but none seem to work.
1. use java script to generate the empty row. The id's I generated should match the JSF data table component. (form:datatable-id:rowinde
2. use the following tag to make a call to a listener on the backing bean
<a4j:commandButton value="Add"
immediate="true"
actionListener="#{claimfor
reRender="lines"/>
Where lines is the entire data table id.
But in the listener, there is no way for me to get the data in the table. I was hoping to add the data to the backing bean and also add a new empty item and have the lines re-rendered. There are obviously issues with the scope of the bean as well.
Does anyone know of any simple way of doing this. I don't want to submit the entire form because it may not be complete as there are additional fields on the form. Any help will be greatly appreciated.
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Thank you for your link. although I did not use the java script (prototype) based approach, I did something similar.
1. Used a Phase Listener ahead of the Validation Phase and Built the table Line data from the request object.
2. Used an AJAX call to Add or delete rows. This is done by setting a message on the request object. The Phase listener examines the message as it builds the line data from the request.
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by: mrcoffee365Posted on 2007-08-15 at 08:50:47ID: 19700734
I think Javascript to enter the extra row, and a special Ajax call to add it seems the best way to handle what you want. You could also do a normal submit of the entire form, and turn off the entire form validation in the case of the Add Row request.
This blog has some discussion of a similar problem, which might help you with yours:
http://www.nabble.com/Ajax
However, I don't know of a simple set of commands which will do exactly what you want -- I think you'll have to just work your way through your code.
If you want more help here, you'll have to post more of your code, because it's not possible to tell from your text description what the problem is, either with the Javascript or the back end code.