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https://issues.apache.org/jira/browse/TAPESTRY-2636?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Howard M. Lewis Ship closed TAPESTRY-2636.
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Resolution: Fixed
> NoSuchElementException on submit when using a Grid with a non-default model
> inside a Form
> -----------------------------------------------------------------------------------------
>
> Key: TAPESTRY-2636
> URL: https://issues.apache.org/jira/browse/TAPESTRY-2636
> Project: Tapestry
> Issue Type: Bug
> Components: tapestry-core
> Affects Versions: 5.0.14
> Reporter: Howard M. Lewis Ship
> Assignee: Howard M. Lewis Ship
> Priority: Critical
> Fix For: 5.0.15
>
>
> When you use the add, reorder, etc. parameters of Grid, it modifies the
> BeanModel uses when rendering.
> Inside a Form, on Submit, the model is again read and modified inside
> setupDataSource().
> However, subsequent requests for the model return the unmodified model (if
> the model parameter is not bound) due to the rules of how parameters behave
> when not rendering. Reading the parameter when not rendering ensures that the
> value is NOT cached, forcing a re-read of the binding, which means that the
> property modifications are not visible.
> Grid needs to have a secondary variable to store the modified model during
> rendering and on Form submit.
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