RJS in Ruby On Rails

RJS allows you to write ruby instead of javascript.

Your rjs file is just normal ruby, so you can do things like

if @divs_to_hide
page.hide(@divs_to_hide)
end
if @element_to_remove
page[@element_to_remove].remove()
end

TO update partial file...

--------------------------

render :update do |page|

page[:div_project_efforts].innerHTML = render :partial => "project_effort_graph"

end

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Using Link_to_function

RJS to hide,show and to assign a value to call render partial with innerHTML on view side.

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<%= link_to_function "Edit" do |page|

page[:postbulletin].show;

page[:bulletin_title].value = bulletin.title;

page["bulletin[message]"].value = bulletin.message;

(bulletin.video_id != 0) ? (page[:addupdatevideo].innerHTML = render :partial => 'users/get_video';page[:addupdatevideo].show;) : (page[:addupdatevideo].hide);

(bulletin.video_id != 0) ? page[:addupdatevideo1].hide : page[:addupdatevideo1].show;

page[:bulletin_video].value = @video.id if bulletin.video_id != 0;

page[:bulletin_id].value = bulletin.id;

page[:error_messages].hide;

(bulletin.expired == true) ? (page[:bulletin_expiration].checked = false) : (page[:bulletin_expiration].checked = true) ;

end %>

RJS using IF condition in ROR

Write a if condition in RJS

  page << "if($('some_div').visible()){"

  page['some_div'].replace :partial => 'some_partial'

  page << '}else{'

  page.insert_html :after, 'something_else', :partial => 'header'

  page << '}'

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render :update do |page|

page << "if ($('editvideodetail')){"

page.replace "editvideodetail", :partial => 'show_video_detail'

page["showvideodetail"].visual_effect(:highlight)

page << "} else { if ($('showvideodetail')) {"

page[:showvideodetail].remove

page << "}"

page.insert_html :after,"video_id_#{params[:id]}", :partial => 'show_video_detail'

page["video_id_#{params[:id]}"].visual_effect(:highlight)

page << "}"

end

render :update do |page|

page << "if ($('div_add_note').style.display == 'none'){"

page[:div_add_note].show

page << "} else {"

page[:div_add_note].hide

page << "}"

end

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