Marston A.
2006-Apr-22 20:27 UTC
[Rails] Creating a select dropdown box with links to methods
What would be the best way to create a form select dropdown box and upon "submit" have it directly go to a controller method view? I have something that somewhat works, but I think there is probably a much easier way to do it. As of now, I have the dropdown list which when the form is submitted is handed to a controller method which basically I have my dropdown box: <%= form_tag :action => ''select_view'' %> <strong>Select a View:</strong> <select id="selection" name="selection"> <option value="choice1">Choice 1</option> <option value="choice2">Choice 2</option> </select> <%= submit_tag("View") %> <%= end_form_tag %> Then I have a methond in my controller that based on the selct box selection, redirects to a different method/view: def select_view # Depending on the selection, redirect to a certain view. if params[:selection] = ''choice1'' redirect_to(:action => ''method1'') elsif params[:selection] = ''choice2'' redirect_to(:action => ''method2'') else redirect_to(:action => ''method3'') end end I''m sure there is a better way to do this but I can''t find it. Plus, even though they are quite trivial I''m sure my if/elsif statement is messed up somewhere as it works, but always redirects to the first if parameter if another choice in the select list is chosen. Thanks. -- Posted via http://www.ruby-forum.com/.
Alex Wayne
2006-Apr-22 21:11 UTC
[Rails] Re: Creating a select dropdown box with links to methods
Marston A. wrote:> What would be the best way to create a form select dropdown box and upon > "submit" have it directly go to a controller method view? > > I have something that somewhat works, but I think there is probably a > much easier way to do it. As of now, I have the dropdown list which > when the form is submitted is handed to a controller method which > basically > > I have my dropdown box: > > <%= form_tag :action => ''select_view'' %> > <strong>Select a View:</strong> > <select id="selection" name="selection"> > <option value="choice1">Choice 1</option> > <option value="choice2">Choice 2</option> > </select> > <%= submit_tag("View") %> > <%= end_form_tag %> > > Then I have a methond in my controller that based on the selct box > selection, redirects to a different method/view: > > def select_view > # Depending on the selection, redirect to a certain view. > if params[:selection] = ''choice1'' > redirect_to(:action => ''method1'') > elsif params[:selection] = ''choice2'' > redirect_to(:action => ''method2'') > else > redirect_to(:action => ''method3'') > end > end > > I''m sure there is a better way to do this but I can''t find it. Plus, > even though they are quite trivial I''m sure my if/elsif statement is > messed up somewhere as it works, but always redirects to the first if > parameter if another choice in the select list is chosen. Thanks.First of all, "=" is the assignment operator and "==" is the comparison operator. So try: def select_view # Depending on the selection, redirect to a certain view. if params[:selection] == ''choice1'' redirect_to(:action => ''method1'') elsif params[:selection] == ''choice2'' redirect_to(:action => ''method2'') else redirect_to(:action => ''method3'') end end But heres what i would do: #controller class SomeController < ApplicationController SELECTABLE_ACTIONS = [:show, :show_log, :happy_dance] def select_view_form @select_options = SomeController::SELECTABLE_ACTIONS.map do |action| [action.to_s.humanize, action] end end def select_view if SELECTABLE_ACTIONS.include? params[:selection].to_sym redirect_to :action => params[:selection] else redirect_to :action => ''default_action'' end end end #view <%= form_tag :action => ''select_view'' %> <strong>Select a View:</strong> <select id="selection" name="selection"> <%= options_for_select @select_options %> </select> <%= submit_tag("View") %> <%= end_form_tag %> SELECTABLE_ACTIONS contains a sybmol for each action we want to supply a link to. We use a helper method to generate some option tags from our controller constant. Note you have to use :: notation to access a non-local constant. It should generate: <option value="show">Show</option> <option value="show_log">Show log</option> <option value="happy_dance">Happy dance</option> In the select_view action, we see if the provided option is in our list of selectable action, and if it is, redirect there, wherever that may be. If it''s not in the list, then we redirect to our default action. Once it''s all setup, just add action names to the SELECTABLE_ACTIONS array to enable people to link to them. It keeps the control of this functionality in a single line of setup. -- Posted via http://www.ruby-forum.com/.
Alex Wayne
2006-Apr-22 21:12 UTC
[Rails] Re: Creating a select dropdown box with links to methods
oops, that code sample was supposed to be: #controller class SomeController < ApplicationController SELECTABLE_ACTIONS = [:show, :show_log, :happy_dance] def select_view if SELECTABLE_ACTIONS.include? params[:selection].to_sym redirect_to :action => params[:selection] else redirect_to :action => ''default_action'' end end end #SomeController Helper def select_view_options_tags options = SomeController::SELECTABLE_ACTIONS.map do |action| [action.to_s.humanize, action] end options_for_select options end #view <%= form_tag :action => ''select_view'' %> <strong>Select a View:</strong> <select id="selection" name="selection"> <%= select_view_options_tags %> </select> <%= submit_tag("View") %> <%= end_form_tag %> -- Posted via http://www.ruby-forum.com/.
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