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Adam Teale

2008-Jul-08 02:47 UTC

$50 to anyone - 1 form - multiple models, HMT w/check_boxes

Hi Guys,

Firstly apologies for posting again.

I have been through a load of headache and days deep in google trying to
find an example/solution to my problem.
A lot of good people have been helping out a lot but I still haven''t
managed to knock it over yet.

So, I am offering $50USD (via paypal) to anyone who can get this working
for me. Or I can send you something cool from Thailand (where I live)

I have the following models in a has_many :through relationship.
Job, Division, JobDivisions.

Each job can involve any number of divisions.

The 3 things I need to do:
  1. When I create a new Job I want to be able to select the appropriate
divisions using checkboxes.
  2. I guess I will probably need to edit a job later - add/remove
divisions
  3. The other step in ''setting up a job'' is I have a script
that builds
a bunch of different directories depending on the divisions the job has.
This, hopefully, will get information from the JobDivisions JOIN table -
basically ''how many directories for each division to build''.

Most importantly I need to work out point (1).

Maybe the only problem is that I have no idea how to use the checkbox''s
output to create new JobDivisions.

NOTES:
I am using form_for, but am wondering if I should be using form_for_tag
My tables seem to be ok - the JobDivision table has job_id:integer,
division_id:integer & one called shotamount:integer - for point (3)
above.

Please help!

Very Sincerely!, Adam


As for errors I currently get:

-----------------------------------------------------------------
NoMethodError in JobsController#create

undefined method `values'' for "true":String
RAILS_ROOT: /Users/ateale/frameworx

Application Trace | Framework Trace | Full Trace
app/controllers/jobs_controller.rb:72:in `create''
app/controllers/jobs_controller.rb:71:in `each_value''
app/controllers/jobs_controller.rb:71:in `create''
Request

Parameters:

{"commit"=>"Create",
 "authenticity_token"=>"c37334c050f07baa76c1daa9fcf08f0416902ce3",
 "job"=>{"job_title"=>"green"},
 "divisions"=>{"1"=>"true",
 "3"=>"true"}}
Show session dump

Response

Headers:

{"cookie"=>[],
 "Cache-Control"=>"no-cache"}
-----------------------------------------------------------------



Here are my files so far:

##############
MODELS
##############

---------------
job.rb
---------------
class Job < ActiveRecord::Base
  has_many :job_divisions
  has_many :divisions, :through => :job_divisions
end

---------------
division.rb
---------------
class Division < ActiveRecord::Base
  has_many :job_divisions
  has_many :jobs, :through => :job_divisions
end

---------------
job_division.rb
---------------
class JobDivision < ActiveRecord::Base
  belongs_to :job
  belongs_to :division
end




##############
VIEWS
##############

------------
new.html.erb
------------
<h1>New job</h1>

<%= error_messages_for :job %>

<% form_for(@job) do |f| %>

  <p>
   <b>Job Title</b><br />
     <%= f.text_field :job_title %>
  </p>

  <% Division.find(:all).each do |division| %>
    <p><%= check_box_tag "divisions[#{division.id}]", true,
@job.divisions.include?(division.id)  %>   <%= division.name
%></p>
  <% end %>

<p>
  <%= f.submit "Create" %>
</p>
<% end %>







##############
CONTROLLERS
##############

---------------
jobs_controller.rb
---------------

def new
  @job = Job.new

  Division.find(:all).each do |c|
      @job.job_divisions.build(:id => c)
  end

  respond_to do |format|
    format.html # new.html.erb
    format.xml  { render :xml => @job }
  end
end


def create
   @job = Job.new(params[:job])
   @job.user_id = session[:user_id]

   params[:divisions].each_value do |k|
    @job.job_divisions.build(k)
   end

  respond_to do |format|
    if @job.save
      flash[:notice] = ''Job was successfully created.''
      format.html { redirect_to(@job) }
      format.xml  { render :xml => @job, :status => :created, :location
=> @job }
    else
      format.html { render :action => "new" }
      format.xml  { render :xml => @job.errors, :status =>
:unprocessable_entity }
    end
  end
end


def update

  params[:post][:tag_ids] ||= []
  @job = Job.find(params[:id])

  if @job.update_attributes(params[:job])
    flash[:notice] = ''Post was successfully updated.''
  else
  end

  respond_to do |format|
    if @job.update_attributes(params[:job])
      flash[:notice] = ''Job was successfully updated.''
      format.html { redirect_to(@job) }
      format.xml  { head :ok }
    else
      format.html { render :action => "edit" }
      format.xml  { render :xml => @job.errors, :status =>
:unprocessable_entity }
    end
  end
end
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Matt Williams

2008-Jul-08 03:11 UTC

head link

Re: $50 to anyone - 1 form - multiple models, HMT w/check_boxes

Adam --

Is it feasible to use something like active scaffold?
http://activescaffold.com

If so, that''s the easiest way I know to solve this.  If not,
I''d still
be happy to help.

Matt
On Tue, 2008-07-08 at 04:47 +0200, Adam Teale wrote:> Hi Guys,
> 
> Firstly apologies for posting again.
> 
> I have been through a load of headache and days deep in google trying to
> find an example/solution to my problem.
> A lot of good people have been helping out a lot but I still
haven''t
> managed to knock it over yet.
> 
> So, I am offering $50USD (via paypal) to anyone who can get this working
> for me. Or I can send you something cool from Thailand (where I live)
> 
> I have the following models in a has_many :through relationship.
> Job, Division, JobDivisions.
> 
> Each job can involve any number of divisions.
> 
> The 3 things I need to do:
>   1. When I create a new Job I want to be able to select the appropriate
> divisions using checkboxes.
>   2. I guess I will probably need to edit a job later - add/remove
> divisions
>   3. The other step in ''setting up a job'' is I have a
script that builds
> a bunch of different directories depending on the divisions the job has.
> This, hopefully, will get information from the JobDivisions JOIN table -
> basically ''how many directories for each division to
build''.
> 
> Most importantly I need to work out point (1).
> 
> Maybe the only problem is that I have no idea how to use the
checkbox''s
> output to create new JobDivisions.
> 
> NOTES:
> I am using form_for, but am wondering if I should be using form_for_tag
> My tables seem to be ok - the JobDivision table has job_id:integer,
> division_id:integer & one called shotamount:integer - for point (3)
> above.
> 
> Please help!
> 
> Very Sincerely!, Adam
> 
> 
> As for errors I currently get:
> 
> -----------------------------------------------------------------
> NoMethodError in JobsController#create
> 
> undefined method `values'' for "true":String
> RAILS_ROOT: /Users/ateale/frameworx
> 
> Application Trace | Framework Trace | Full Trace
> app/controllers/jobs_controller.rb:72:in `create''
> app/controllers/jobs_controller.rb:71:in `each_value''
> app/controllers/jobs_controller.rb:71:in `create''
> Request
> 
> Parameters:
> 
> {"commit"=>"Create",
> 
"authenticity_token"=>"c37334c050f07baa76c1daa9fcf08f0416902ce3",
>  "job"=>{"job_title"=>"green"},
>  "divisions"=>{"1"=>"true",
>  "3"=>"true"}}
> Show session dump
> 
> Response
> 
> Headers:
> 
> {"cookie"=>[],
>  "Cache-Control"=>"no-cache"}
> -----------------------------------------------------------------
> 
> 
> 
> Here are my files so far:
> 
> ##############
> MODELS
> ##############
> 
> ---------------
> job.rb
> ---------------
> class Job < ActiveRecord::Base
>   has_many :job_divisions
>   has_many :divisions, :through => :job_divisions
> end
> 
> ---------------
> division.rb
> ---------------
> class Division < ActiveRecord::Base
>   has_many :job_divisions
>   has_many :jobs, :through => :job_divisions
> end
> 
> ---------------
> job_division.rb
> ---------------
> class JobDivision < ActiveRecord::Base
>   belongs_to :job
>   belongs_to :division
> end
> 
> 
> 
> 
> ##############
> VIEWS
> ##############
> 
> ------------
> new.html.erb
> ------------
> <h1>New job</h1>
> 
> <%= error_messages_for :job %>
> 
> <% form_for(@job) do |f| %>
> 
>   <p>
>    <b>Job Title</b><br />
>      <%= f.text_field :job_title %>
>   </p>
> 
>   <% Division.find(:all).each do |division| %>
>     <p><%= check_box_tag "divisions[#{division.id}]",
true,
> @job.divisions.include?(division.id)  %>   <%= division.name
%></p>
>   <% end %>
> 
> <p>
>   <%= f.submit "Create" %>
> </p>
> <% end %>
> 
> 
> 
> 
> 
> 
> 
> ##############
> CONTROLLERS
> ##############
> 
> ---------------
> jobs_controller.rb
> ---------------
> 
> def new
>   @job = Job.new
> 
>   Division.find(:all).each do |c|
>       @job.job_divisions.build(:id => c)
>   end
> 
>   respond_to do |format|
>     format.html # new.html.erb
>     format.xml  { render :xml => @job }
>   end
> end
> 
> 
> def create
>    @job = Job.new(params[:job])
>    @job.user_id = session[:user_id]
> 
>    params[:divisions].each_value do |k|
>     @job.job_divisions.build(k)
>    end
> 
>   respond_to do |format|
>     if @job.save
>       flash[:notice] = ''Job was successfully created.''
>       format.html { redirect_to(@job) }
>       format.xml  { render :xml => @job, :status => :created,
:location
> => @job }
>     else
>       format.html { render :action => "new" }
>       format.xml  { render :xml => @job.errors, :status =>
> :unprocessable_entity }
>     end
>   end
> end
> 
> 
> def update
> 
>   params[:post][:tag_ids] ||= []
>   @job = Job.find(params[:id])
> 
>   if @job.update_attributes(params[:job])
>     flash[:notice] = ''Post was successfully updated.''
>   else
>   end
> 
>   respond_to do |format|
>     if @job.update_attributes(params[:job])
>       flash[:notice] = ''Job was successfully updated.''
>       format.html { redirect_to(@job) }
>       format.xml  { head :ok }
>     else
>       format.html { render :action => "edit" }
>       format.xml  { render :xml => @job.errors, :status =>
> :unprocessable_entity }
>     end
>   end
> end

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Adam Teale

2008-Jul-08 03:39 UTC

head link

Re: $50 to anyone - 1 form - multiple models, HMT w/check_bo

hey Matt thanks for reading my post

I''ll check that out. I was hoping to try build most of the app - from 
what I had seen on the web most of this seemed built into rails.

Thanks for the link!

Adam
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walker

2008-Jul-08 05:17 UTC

head link

Re: $50 to anyone - 1 form - multiple models, HMT w/check_boxes

I was trying to do something similar and found a much better approach
than using checkboxes, which was ugly in code and UI. Check out these
Railscasts, just following these through gave me a good start:

http://railscasts.com/episodes/73
http://railscasts.com/episodes/74
http://railscasts.com/episodes/75


On Jul 7, 7:47 pm, Adam Teale
<rails-mailing-l...-ARtvInVfO7ksV2N9l4h3zg@public.gmane.org>
wrote:> Hi Guys,
>
> Firstly apologies for posting again.
>
> I have been through a load of headache and days deep in google trying to
> find an example/solution to my problem.
> A lot of good people have been helping out a lot but I still
haven''t
> managed to knock it over yet.
>
> So, I am offering $50USD (via paypal) to anyone who can get this working
> for me. Or I can send you something cool from Thailand (where I live)
>
> I have the following models in a has_many :through relationship.
> Job, Division, JobDivisions.
>
> Each job can involve any number of divisions.
>
> The 3 things I need to do:
>   1. When I create a new Job I want to be able to select the appropriate
> divisions using checkboxes.
>   2. I guess I will probably need to edit a job later - add/remove
> divisions
>   3. The other step in ''setting up a job'' is I have a
script that builds
> a bunch of different directories depending on the divisions the job has.
> This, hopefully, will get information from the JobDivisions JOIN table -
> basically ''how many directories for each division to
build''.
>
> Most importantly I need to work out point (1).
>
> Maybe the only problem is that I have no idea how to use the
checkbox''s
> output to create new JobDivisions.
>
> NOTES:
> I am using form_for, but am wondering if I should be using form_for_tag
> My tables seem to be ok - the JobDivision table has job_id:integer,
> division_id:integer & one called shotamount:integer - for point (3)
> above.
>
> Please help!
>
> Very Sincerely!, Adam
>
> As for errors I currently get:
>
> -----------------------------------------------------------------
> NoMethodError in JobsController#create
>
> undefined method `values'' for "true":String
> RAILS_ROOT: /Users/ateale/frameworx
>
> Application Trace | Framework Trace | Full Trace
> app/controllers/jobs_controller.rb:72:in `create''
> app/controllers/jobs_controller.rb:71:in `each_value''
> app/controllers/jobs_controller.rb:71:in `create''
> Request
>
> Parameters:
>
> {"commit"=>"Create",
>
 "authenticity_token"=>"c37334c050f07baa76c1daa9fcf08f0416902ce3",
>  "job"=>{"job_title"=>"green"},
>  "divisions"=>{"1"=>"true",
>  "3"=>"true"}}
> Show session dump
>
> Response
>
> Headers:
>
> {"cookie"=>[],
>  "Cache-Control"=>"no-cache"}
> -----------------------------------------------------------------
>
> Here are my files so far:
>
> ##############
> MODELS
> ##############
>
> ---------------
> job.rb
> ---------------
> class Job < ActiveRecord::Base
>   has_many :job_divisions
>   has_many :divisions, :through => :job_divisions
> end
>
> ---------------
> division.rb
> ---------------
> class Division < ActiveRecord::Base
>   has_many :job_divisions
>   has_many :jobs, :through => :job_divisions
> end
>
> ---------------
> job_division.rb
> ---------------
> class JobDivision < ActiveRecord::Base
>   belongs_to :job
>   belongs_to :division
> end
>
> ##############
> VIEWS
> ##############
>
> ------------
> new.html.erb
> ------------
> <h1>New job</h1>
>
> <%= error_messages_for :job %>
>
> <% form_for(@job) do |f| %>
>
>   <p>
>    <b>Job Title</b><br />
>      <%= f.text_field :job_title %>
>   </p>
>
>   <% Division.find(:all).each do |division| %>
>     <p><%= check_box_tag "divisions[#{division.id}]",
true,
> @job.divisions.include?(division.id)  %>   <%= division.name
%></p>
>   <% end %>
>
> <p>
>   <%= f.submit "Create" %>
> </p>
> <% end %>
>
> ##############
> CONTROLLERS
> ##############
>
> ---------------
> jobs_controller.rb
> ---------------
>
> def new
>   @job = Job.new
>
>   Division.find(:all).each do |c|
>       @job.job_divisions.build(:id => c)
>   end
>
>   respond_to do |format|
>     format.html # new.html.erb
>     format.xml  { render :xml => @job }
>   end
> end
>
> def create
>    @job = Job.new(params[:job])
>    -yhR+wphxfk0@public.gmane.org_id = session[:user_id]
>
>    params[:divisions].each_value do |k|
>     @job.job_divisions.build(k)
>    end
>
>   respond_to do |format|
>     if @job.save
>       flash[:notice] = ''Job was successfully created.''
>       format.html { redirect_to(@job) }
>       format.xml  { render :xml => @job, :status => :created,
:location
> => @job }
>     else
>       format.html { render :action => "new" }
>       format.xml  { render :xml => @job.errors, :status =>
> :unprocessable_entity }
>     end
>   end
> end
>
> def update
>
>   params[:post][:tag_ids] ||= []
>   @job = Job.find(params[:id])
>
>   if @job.update_attributes(params[:job])
>     flash[:notice] = ''Post was successfully updated.''
>   else
>   end
>
>   respond_to do |format|
>     if @job.update_attributes(params[:job])
>       flash[:notice] = ''Job was successfully updated.''
>       format.html { redirect_to(@job) }
>       format.xml  { head :ok }
>     else
>       format.html { render :action => "edit" }
>       format.xml  { render :xml => @job.errors, :status =>
> :unprocessable_entity }
>     end
>   end
> end
> --
> Posted viahttp://www.ruby-forum.com/.
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Adam Teale

2008-Jul-08 07:43 UTC

head link

Re: $50 to anyone - 1 form - multiple models, HMT w/check_bo

I think i might be getting closer!

But I am getting this error (does it mean it is trying to save the Join 
table before it has created a Job? and therefore can''t reference a 
job_id?) :

THE ERROR:
----------------------
"You cannot call create unless the parent is saved"
----------------------


Any ideas how to save the parent?




my updated Job.rb model:
----------------------
class Job < ActiveRecord::Base
  has_many :job_divisions
  has_many :divisions, :through => :job_divisions

  def self.options_for_select
    self.find(:all).collect{|job| [job.job_title]}
  end

  def division_ids=(division_ids)
    job_divisions.each do |job_divi|
      # destroying the item you are enumerating over usually isn''t a 
good idea.
      # So this may not work:
      job_divi.destroy unless division_ids.include? job_divi.division_id
    end

    division_ids.each do |division_id|
      self.job_divisions.create(:division_id => division_id) unless 
job_divisions.any? { |d| d.division_id == division_id }
    end
  end

end
----------------------



updated new.html.erb view:
----------------------
<h1>New job</h1>

<%= error_messages_for :job %>

<% form_for(@job) do |f| %>

  <p>
    <b>Job Title</b><br />
    <%= text_field :job, :job_title %>
  </p>

    <b>Division</b><br />
  <p><% for division in Division.find(:all) %>
    <div>
      <%= check_box_tag "job[division_ids][]", division.id, 
@job.job_divisions.include?(division) %><%= division.name%>
    <div>
  <% end %>
  </p>

  <p>
    <%= f.submit "Create" %>
  </p>
<% end %>

<%= link_to ''Back'', jobs_path %>
----------------------



-- 
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Matt Williams

2008-Jul-08 15:03 UTC

head link

Re: $50 to anyone - 1 form - multiple models, HMT w/check_bo

Adam --

In your controller''s create, you have:

   @job = Job.new(params[:job])
   @job.user_id = session[:user_id]

   params[:divisions].each_value do |k|
    @job.job_divisions.build(k)
   end

The problem is that it hasn''t created an id for the job yet, so it
can''t
define the relationship between the job and the division.

You need to save the job prior to adding the divisions.

@job.save!

Hope this helps,
Matt

On Tue, 2008-07-08 at 09:43 +0200, Adam Teale wrote:> I think i might be getting closer!
> 
> But I am getting this error (does it mean it is trying to save the Join 
> table before it has created a Job? and therefore can''t reference a
> job_id?) :
> 
> THE ERROR:
> ----------------------
> "You cannot call create unless the parent is saved"
> ----------------------
> 
> 
> Any ideas how to save the parent?
> 
> 
> 
> 
> my updated Job.rb model:
> ----------------------
> class Job < ActiveRecord::Base
>   has_many :job_divisions
>   has_many :divisions, :through => :job_divisions
> 
>   def self.options_for_select
>     self.find(:all).collect{|job| [job.job_title]}
>   end
> 
>   def division_ids=(division_ids)
>     job_divisions.each do |job_divi|
>       # destroying the item you are enumerating over usually isn''t
a
> good idea.
>       # So this may not work:
>       job_divi.destroy unless division_ids.include? job_divi.division_id
>     end
> 
>     division_ids.each do |division_id|
>       self.job_divisions.create(:division_id => division_id) unless 
> job_divisions.any? { |d| d.division_id == division_id }
>     end
>   end
> 
> end
> ----------------------
> 
> 
> 
> updated new.html.erb view:
> ----------------------
> <h1>New job</h1>
> 
> <%= error_messages_for :job %>
> 
> <% form_for(@job) do |f| %>
> 
>   <p>
>     <b>Job Title</b><br />
>     <%= text_field :job, :job_title %>
>   </p>
> 
>     <b>Division</b><br />
>   <p><% for division in Division.find(:all) %>
>     <div>
>       <%= check_box_tag "job[division_ids][]", division.id, 
> @job.job_divisions.include?(division) %><%= division.name%>
>     <div>
>   <% end %>
>   </p>
> 
>   <p>
>     <%= f.submit "Create" %>
>   </p>
> <% end %>
> 
> <%= link_to ''Back'', jobs_path %>
> ----------------------
> 
> 
> 

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