I just want "Hello world" for a chained fields example. On the old Active Scaffold site, there was a 'demos' section. That section included code for common yet complicated scenarios. I would like something similar for chaining fields. Many others have sought the same thing from what I've seen while Googling.
And FWIW, here's some philosophy. I've seen many software companies and projects fail for misunderstanding one fact. 80% of potential developers only have 20% of the skills. That 80% learns through copy/paste of working examples. Focus on providing better samples to work with, and you will increase your addressable market by 400%. Thanks! Paul --- On Thu, 8/20/09, Sergio Cambra .:: entreCables S.L. ::. <[email protected]> wrote: > From: Sergio Cambra .:: entreCables S.L. ::. <[email protected]> > Subject: Re: Yet another question on dynamic selects > To: [email protected] > Date: Thursday, August 20, 2009, 9:11 AM > > On Jueves, 20 de Agosto de 2009 17:59:16 Paul Hamann > escribió: > > I ended up with a rather contrived example after > looking at too many code > > samples. I really just want "Hello world." > > You are trying something harder thant Hello world. A hello > world example > shouldn't use chained fields in my opinion. > > > > > For survey, there are n number of surveys. > Surveys have n number of survey > > questions. When a specific survey is selected, the > questions for that > > survey show up as options in the second select. > Like I said, it's a bit > > contrived. > > > > But you are setting that in survey create and update forms. > Scenary you are > describing is easier, and more logical IMO, for a model > with belongs_to > :survey and belongs_to :survey_question > > > Thanks for the help, Paul > > > > --- On Thu, 8/20/09, Sergio Cambra .:: entreCables > S.L. ::. > <[email protected]> > wrote: > > > From: Sergio Cambra .:: entreCables S.L. ::. > <[email protected]> > > > Subject: Re: Yet another question on dynamic > selects > > > To: [email protected] > > > Date: Thursday, August 20, 2009, 12:49 AM > > > > > > On Jueves, 20 de Agosto de 2009 03:48:04 Paul > Hamann > > > > > > escribió: > > > > Thanks again for all your help. Sadly, I'm > still > > > > > > missing something. [BTW, > > > > > > > there's a search_sql in the thread example, > but not in > > > > > > the wiki example?] > > > > > > > Here's the code: > > > > > > > > ============ schema > =============================== > > > > > > > > create_table "survey_questions", > :force => > > > > > > true do |t| > > > > > > > t.integer > > > > > > "survey_id", :limit => > 11 > > > > > > > t.text > > > > > > "question_text" > > > > > > > t.datetime > "created_at" > > > > t.datetime > "updated_at" > > > > end > > > > > > > > create_table "surveys", > :force => > > > > > > true do |t| > > > > > > > > > > > > > t.string "name" > > > > > > > t.datetime > "created_at" > > > > t.datetime > "updated_at" > > > > end > > > > > > > > ============ Model: survey.rb ========= > > > > > > > > class Survey < ActiveRecord::Base > > > > > > > > has_many :survey_questions > > > > > > > > def to_tabel > > > > "#{name}" > > > > end > > > > end > > > > > > > > ============Model: survey_question.rb ==== > > > > > > > > class SurveyQuestion < > ActiveRecord::Base > > > > > > > > belongs_to :survey > > > > > > > > def to_label > > > > "#{question_text}" > > > > end > > > > end > > > > > > > > ================= survey_helper.rb > ================== > > > > > > > > module SurveyHelper > > > > > > > > def > > > > > > options_for_association_conditions(association) > > > > > > > if association.name == > > > > > > > :survey_question > > > : > > > > > > > > > > {'survey_questions.survey_id' => > > > @record.survey_id} > > > > > > > else > > > > super > > > > end > > > > end > > > > > > > > end > > > > > > > > ============= survey_controller.rb > > > > > > ===================== > > > > > > > class SurveyController < > ApplicationController > > > > > > > > layout "default" > > > > active_scaffold :survey > > > > > > > > active_scaffold do |config| > > > > > config.columns[:name].form_ui > > > > > > = :select > > > > > > > > config.columns[:name].options > > > > > > = { :update_column => ':survey_question' > > > > > > > } config.columns['question_text'].form_ui = > :select > > > > end > > > > end > > > > > > form_ui select automatically fills the options > when column > > > is an association > > > (neither name nor question_text are > associations). You > > > can't set question_text > > > form_ui from SurveyController because that column > belongs > > > to SurveyQuestion > > > model, you should do it in > SurveyQuestionsController. > > > > > > I don't understand what you want to get. What > options > > > should be shown for > > > name? > > > > > > > > > > > > > ========================================================== > > > > > > > --- On Wed, 8/19/09, Kerry Foley <[email protected]> > > > > > > wrote: > > > > > From: Kerry Foley <[email protected]> > > > > > Subject: Re: Yet another question on > dynamic > > > > > > selects > > > > > > > > To: [email protected] > > > > > Date: Wednesday, August 19, 2009, 5:32 > PM > > > > > > > > > > It sounds like your column name is > incorrect. You > > > > > > didn't > > > > > > > > paste you're > > > > > code so I can't say for sure. You > should be doing > > > > > > something > > > > > > > > like > > > > > config.columns[:project_type].form_ui = > :select > > > > > #belongs_to > > > > > or > > > > > config.columns[:regions].form_ui = > > > > > > > > > > :select #has_many > > > > > > > > > > it shouldn't be "_id" - it's the > association > > > > > > name, not the > > > > > > > > column name. > > > > > > > > > > There are examples on the wiki e.g > Getting > > > > > > Started; > > > > > > > > http://wiki.github.com/activescaffold/active_scaffold > > > > > > > > > > You don't need to build the select. > > > > > > > > > > I think there's a more or less complete > set of > > > > > > controller, > > > > > > > > model and > > > > > helper code for what you are trying to > do in the > > > > > > thread > > > > > > > > previously sent. > > > > > > > > > > http://groups.google.com/group/activescaffold/browse_thread/thread/2a > > > > >e130 edb1d0e2d2 > > > > > > > > > > > > > > > Regards, > > > > > Kerry > > > > > > > > > > Me wrote: > > > > > > Bare with me here. I'm a > little slow. > > > > > > So I tried > > > > > > > > the code, and I get: > > > > > > You have a nil object when you > didn't expect > > > > > > it! > > > > > > > > > The error occurred while > evaluating > > > > > > nil.form_ui= > > > > > > > > > Is there enough smarts built-in to > populate > > > > > > the select > > > > > > > > boxes? Or do I > > > > > > > > > > > need something like: > > > > > > > > > > > > a= Author.find(:all).collect { > |a| > > > > > > a.name } > > > > > > > > > If that kind of code is required, > do I put > > > > > > that in the > > > > > > > > helper form > > > > > > > > > > > override? Any chance I can > see one > > > > > > complete > > > > > > > > example that works? I've > > > > > > > > > > > been banging my head on this for > a > > > > > > while. When I > > > > > > > > Google, I just come > > > > > > > > > > > across more people that have been > banging > > > > > > there heads > > > > > > > > on this. > > > > > > > > > > > Thanks! Paul > > > > > > > > > > > > On Aug 19, 1:58 pm, Kerry Foley > <[email protected]> > > > > > > > > > > wrote: > > > > > > > > > > > > > > > > > >> http://groups.google.com/group/activescaffold/browse_thread/thread > > > > > >>/2a. .. > > > > > >> > > > > > >> Regards, > > > > > >> Kerry > > > > > >> > > > > > >> Me wrote: > > > > > >> > > > > > >> > > > > > >>> Greetings! First > post. > > > > > >>> > > > > > > >>> I've been greping the web > for an AS > > > > > > example of > > > > > > > > populating a parent > > > > > > > > > > >>> select box, and then > dynamically > > > > > > changing a > > > > > > > > child select box through > > > > > > > > > > >>> an "onchange" event. > I've seen > > > > > > the > > > > > > > > observer approach, but not with > > > > > > > > > > >>> AS. Is there support > for such > > > > > > a thing? > > > > > > > > >>> > > > > > > >>> I found this thread where > this same > > > > > > question > > > > > > > > was asked. > > > > > > > > > > >>> > > > > > > >>> http://www.mail-archive.com/[email protected]/msg00 > > > > > >>>108. ... > > > > > >>> The poor guy got a rather > prickly > > > > > > > > > > response. He eventually posted > his > > > > > > > > > > >>> solution in the last msg > of the > > > > > > thread. > > > > > > > > Unfortunately, I can't get > > > > > > > > > > >>> that solution to > work. The > > > > > > example [in > > > > > > > > plain English] was, "Surveys > > > > > > > > > > >>> have many survey_questions > and > > > > > > surveys > > > > > > > > have_many survey_options." If > > > > > > > > > > >>> options are meant to be > answers to > > > > > > questions, > > > > > > > > then it should be > > > > > > > > > > >>> "Surveys have many > questions. > > > > > > Questions > > > > > > > > have many options [multiple > > > > > > > > > > >>> > choice]." That > > > > > > would be three > > > > > > > > levels. I tried looking at the > > > > > > > > > > >>> survey_options table as > some type of > > > > > > join with > > > > > > > > both foreign keys > > > > > > > > > > >>> [survey_id, > > > > > > survey_question_id]. If that > > > > > > > > were the case, then survey > > > > > > > > > > >>> "has many questions > through > > > > > > > > > > survey_options." That wasn't > listed in > > > > > > > > > > >>> the example. > Clearly, I'm > > > > > > confused > > > > > > > > somewhere. > > > > > > > > > > >>> > > > > > > >>> I would appreciate it if > someone > > > > > > could explain > > > > > > > > the example referenced > > > > > > > > > > >>> in the last message of the > thread > > > > > > linked to > > > > > > > > above. Alternatively. I > > > > > > > > > > >>> would appreciate a clear > example of > > > > > > this > > > > > > > > pattern. I think that this > > > > > > > > > > >>> is a common situation > where some > > > > > > documentation > > > > > > > > would benefit many > > > > > > > > > > >>> people. > > > > > >>> > > > > > > >>> Thanks! Paul > > > > > >>> > > > > > > > > > > > > > > > > > > > -- > > > Sergio Cambra .:: entreCables S.L. ::. > > > Mariana Pineda 23, 50.018 Zaragoza > > > T) 902 021 404 F) 976 52 98 07 E) [email protected] > > > > > -- > Sergio Cambra .:: entreCables S.L. ::. > Mariana Pineda 23, 50.018 Zaragoza > T) 902 021 404 F) 976 52 98 07 E) [email protected] > > > > > --~--~---------~--~----~------------~-------~--~----~ You received this message because you are subscribed to the Google Groups "ActiveScaffold : Ruby on Rails plugin" group. To post to this group, send email to [email protected] To unsubscribe from this group, send email to [email protected] For more options, visit this group at http://groups.google.com/group/activescaffold?hl=en -~----------~----~----~----~------~----~------~--~---
