Add a last row to grid

[fernandoalmeida]

Hi!

How can i to add a last row to grid?

I need to show cumulative values to specifc columns, id this possible with wice grid?

Thanks.

[leikind]

There is no API specially for the last row, but you can try to do this via the custom row feature: http://grid.leikind.org/adding_rows , http://leikind.org/apis/wice_grid/files/README_rdoc.html#addingrowstothegrid . The trick will be to know when the rendered row is the last one. You can use @your_grid_object.resultset.count to get the number of records page.

Is it Rails3?

[fernandoalmeida]

Yes, Rails 3.

I tryed to develop the feature fallowing after_row and before_row examples:

#lib/grid_renderer.rb
attr_reader :last_row_handler
def last_row(&block)
@last_row_handler = block
end

#lib/wice_grid_view_helpers.rb
last_row_output = if rendering.last_row_handler
call_block_as_erb_or_ruby(rendering, rendering.last_row_handler, grid.resultset)
else
nil
end

  content << last_row_output if last_row_output

  content << '</tbody></table></div>'

This works to handle current page resultset but i want to handle all pages resultset, can i to do this?

I will pull request to you when all works.

Thank you very much.

[leikind]

In my first reply to your problem I meant that you can implement your solution without changing the source code of the plugin. For accessing all records you can try this http://grid.leikind.org/integration_with_application , or, from inside the plugin you can try to use grid.resultset_without_paging_with_user_filters

[fernandoalmeida]

Thanks leikind, worked now!

But i think also what the last_row method is more semantic and easier than to use conditional in all after_row. What do you think, do you want my patch?

Thank you one more time.

[leikind]

Actually this seems like a possible feature. Let's just think what object will be injected into this block. In your code above I see that you are submitting the resultset. Do you think this is enough? I thought you want to perform calculations with all the records, and the resultset in the paginates mode represents only the current page (it's a will_paginate's paginate result object)

[fernandoalmeida]

No, removed this parameter, i am passing nil instead.

call_block_as_erb_or_ruby(rendering, rendering.last_row_handler, nil)

[leikind]

and what calculation do you do there in the last row? Do you access the grid object from there?

[fernandoalmeida]

Yes, i used the :with_resultset callback to get all registers and show one line with page calcs and other with general calcs, in respective columns.

@grid_object.resultset.map(&:value).inject(:+)

@controller.all.map(&:value).inject(:+)

and others.

[leikind]

Please submit the code if you like

[leikind]

How does your grid declaration code with #last_column looks like by the way?

[fernandoalmeida]

i made now the pull request with the code and usage example.

[leikind]

Merged. See 3.0.0pre3