I''ve got in my Form not only fileds from my model but also fields from ither models. How can I validate them like other fields. Example names od input tag fields <p><label for="model1_name1">Name1</label> <%= text_field ''model1'', ''name1'' , :size => 40 %></p> <p><label for="model1_name2">Name2</label> <%= text_field ''model1'', ''name2'' , :size => 40 %></p> and from different model: <p><label for="model2_name3">Name3</label> <%= text_field ''model2'', ''name3'' , :size => 40 %></p> How can I validate presence_of field name3 from model2 model?? --~--~---------~--~----~------------~-------~--~----~ You received this message because you are subscribed to the Google Groups "Ruby on Rails: Talk" group. To post to this group, send email to rubyonrails-talk-/JYPxA39Uh5TLH3MbocFFw@public.gmane.org To unsubscribe from this group, send email to rubyonrails-talk-unsubscribe-/JYPxA39Uh5TLH3MbocFFw@public.gmane.org For more options, visit this group at http://groups.google.com/group/rubyonrails-talk?hl=en -~----------~----~----~----~------~----~------~--~---
Daniello wrote:> I''ve got in my Form not only fileds from my model but also fields from > ither models. How can I validate them like other fields. > > Example names od input tag fields > > <p><label for="model1_name1">Name1</label> > <%= text_field ''model1'', ''name1'' , :size => 40 %></p> > > <p><label for="model1_name2">Name2</label> > <%= text_field ''model1'', ''name2'' , :size => 40 %></p> > > and from different model: > > <p><label for="model2_name3">Name3</label> > <%= text_field ''model2'', ''name3'' , :size => 40 %></p> > > How can I validate presence_of field name3 from model2 model??I''m not sure I understand your question. Would your controller not say something like model1.update_attributes(params["model1"]) model2.update_attributes(params["model2"]) Then if you call model1.save it will not save if validation of model1 fails. Likewise, model2.save will not save if model2 validation fails. To save only if both validations pass you could call in your controller: model1_valid = model1.valid? model2_valid = model2.valid? if (model1_valid && model2_valid) model1.save_with_validation(false) # already validated model2.save_with_validation(false) # already validated else # How do you handle failed validations? end But if your logic is that for this particular form, model2 should only be saved if user has entered a value for a certain field of model1, then you can perform that test in the controller: if params[:model1][:certain_field].blank? # handle error end Stephan -- Posted via http://www.ruby-forum.com/. --~--~---------~--~----~------------~-------~--~----~ You received this message because you are subscribed to the Google Groups "Ruby on Rails: Talk" group. To post to this group, send email to rubyonrails-talk-/JYPxA39Uh5TLH3MbocFFw@public.gmane.org To unsubscribe from this group, send email to rubyonrails-talk-unsubscribe-/JYPxA39Uh5TLH3MbocFFw@public.gmane.org For more options, visit this group at http://groups.google.com/group/rubyonrails-talk?hl=en -~----------~----~----~----~------~----~------~--~---
The update_attributes method saves as well as updating the attribute. b Stephan Wehner wrote:> Daniello wrote: >> I''ve got in my Form not only fileds from my model but also fields from >> ither models. How can I validate them like other fields. >> >> Example names od input tag fields >> >> <p><label for="model1_name1">Name1</label> >> <%= text_field ''model1'', ''name1'' , :size => 40 %></p> >> >> <p><label for="model1_name2">Name2</label> >> <%= text_field ''model1'', ''name2'' , :size => 40 %></p> >> >> and from different model: >> >> <p><label for="model2_name3">Name3</label> >> <%= text_field ''model2'', ''name3'' , :size => 40 %></p> >> >> How can I validate presence_of field name3 from model2 model?? > > I''m not sure I understand your question. > > Would your controller not say something like > > model1.update_attributes(params["model1"]) > model2.update_attributes(params["model2"]) > > Then if you call > > model1.save > > it will not save if validation of model1 fails. > > Likewise, model2.save will not save if model2 validation fails. > > To save only if both validations pass you could call in your controller: > > model1_valid = model1.valid? > model2_valid = model2.valid? > > if (model1_valid && model2_valid) > model1.save_with_validation(false) # already validated > model2.save_with_validation(false) # already validated > else > # How do you handle failed validations? > end > > > But if your logic is that for this particular form, model2 should only > be saved if user has entered a value for a certain field of model1, then > you can perform that test in the controller: > > if params[:model1][:certain_field].blank? > # handle error > end > > Stephan >--~--~---------~--~----~------------~-------~--~----~ You received this message because you are subscribed to the Google Groups "Ruby on Rails: Talk" group. To post to this group, send email to rubyonrails-talk-/JYPxA39Uh5TLH3MbocFFw@public.gmane.org To unsubscribe from this group, send email to rubyonrails-talk-unsubscribe-/JYPxA39Uh5TLH3MbocFFw@public.gmane.org For more options, visit this group at http://groups.google.com/group/rubyonrails-talk?hl=en -~----------~----~----~----~------~----~------~--~---
On 1-May-07, at 3:51 PM, Ben Munat wrote:> > The update_attributes method saves as well as updating the attribute. > > b > > Stephan Wehner wrote: >> Daniello wrote: >>> I''ve got in my Form not only fileds from my model but also fields >>> from >>> ither models. How can I validate them like other fields. >>> >>> Example names od input tag fields >>> >>> <p><label for="model1_name1">Name1</label> >>> <%= text_field ''model1'', ''name1'' , :size => 40 %></p> >>> >>> <p><label for="model1_name2">Name2</label> >>> <%= text_field ''model1'', ''name2'' , :size => 40 %></p> >>> >>> and from different model: >>> >>> <p><label for="model2_name3">Name3</label> >>> <%= text_field ''model2'', ''name3'' , :size => 40 %></p> >>> >>> How can I validate presence_of field name3 from model2 model?? >> >> I''m not sure I understand your question. >> >> Would your controller not say something like >> >> model1.update_attributes(params["model1"]) >> model2.update_attributes(params["model2"]) >> >> Then if you call >> >> model1.save >> >> it will not save if validation of model1 fails. >> >> Likewise, model2.save will not save if model2 validation fails. >> >> To save only if both validations pass you could call in your >> controller: >> >> model1_valid = model1.valid? >> model2_valid = model2.valid? >> >> if (model1_valid && model2_valid) >> model1.save_with_validation(false) # already validated >> model2.save_with_validation(false) # already validated >> else >> # How do you handle failed validations? >> end >> >> >> But if your logic is that for this particular form, model2 should >> only >> be saved if user has entered a value for a certain field of >> model1, then >> you can perform that test in the controller: >> >> if params[:model1][:certain_field].blank? >> # handle error >> end >> >> StephanDaniello, hopefully the following will help move you forward. It will leave you with an @errors for both models in your view that you can iterate over When managing validations for multiple models in one action I typically use something like the following: @model1 = Model1.new(params[:model1]) @model2 = Model2.new(params[:model2]) respond_to do |format| if @ model1.valid? && @ model2.valid? #TODO: transaction here would help out @ model1.save(false) @ model1.save(false) flash[:notice] = ''Model1 and Model2 were successfully created.'' format.html { render :partial => "my_partial" } else flash[:notice] = ''There were errors validating model1, model2'' #merge_errors (below), merges the errors of 2 models into one errors list format.html { @errors = merge_errors(@model1, @model2); render :partial => "/error_messages", :errors => @errors, :status => 500 } end end #merges errors from 2 instances into 1 error object def merge_errors(model1, model2) if model1.errors.size > 0 && model2.errors.size > 0 model1.errors.instance_eval { @errors.merge model2.errors.instance_values[''errors''] } elsif model1.errors.size > 0 model1.errors elsif model2.errors.size > 0 model2.errors else model1.errors end end Cheers, Jodi General Partner The nNovation Group inc. www.nnovation.ca/blog --~--~---------~--~----~------------~-------~--~----~ You received this message because you are subscribed to the Google Groups "Ruby on Rails: Talk" group. To post to this group, send email to rubyonrails-talk-/JYPxA39Uh5TLH3MbocFFw@public.gmane.org To unsubscribe from this group, send email to rubyonrails-talk-unsubscribe-/JYPxA39Uh5TLH3MbocFFw@public.gmane.org For more options, visit this group at http://groups.google.com/group/rubyonrails-talk?hl=en -~----------~----~----~----~------~----~------~--~---
Daniello,
If there is a model association between the two models you can use the
following (copy/pasted from api.rubyonrails.org):
validates_associated(*attr_names)
Validates whether the associated object or objects are all valid
themselves. Works with any kind of association.
class Book < ActiveRecord::Base
has_many :pages
belongs_to :library
validates_associated :pages, :library
end
Warning: If, after the above definition, you then wrote:
class Page < ActiveRecord::Base
belongs_to :book
validates_associated :book
end
...this would specify a circular dependency and cause infinite
recursion.
NOTE: This validation will not fail if the association hasn''t been
assigned. If you want to ensure that the association is both present
and guaranteed to be valid, you also need to use
validates_presence_of.
Configuration options:
* on Specifies when this validation is active (default is :save,
other options :create, :update)
* if - Specifies a method, proc or string to call to determine if
the validation should
occur (e.g. :if => :allow_validation, or :if => Proc.new { |user|
user.signup_step > 2 }). The method, proc or string should return or
evaluate to a true or false value.
Regards,
Bas van Westing
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On 2-May-07, at 10:55 AM, Bas van Westing wrote:> > Daniello, > > If there is a model association between the two models you can use the > following (copy/pasted from api.rubyonrails.org): > > validates_associated(*attr_names) > > Validates whether the associated object or objects are all valid > themselves. Works with any kind of association. > > class Book < ActiveRecord::Base > has_many :pages > belongs_to :library > > validates_associated :pages, :library > end > > Warning: If, after the above definition, you then wrote: > > class Page < ActiveRecord::Base > belongs_to :book > > validates_associated :book > end > > ...this would specify a circular dependency and cause infinite > recursion. > > NOTE: This validation will not fail if the association hasn''t been > assigned. If you want to ensure that the association is both present > and guaranteed to be valid, you also need to use > validates_presence_of. > > Configuration options: > > * on Specifies when this validation is active (default is :save, > other options :create, :update) > * if - Specifies a method, proc or string to call to determine if > the validation should > > occur (e.g. :if => :allow_validation, or :if => Proc.new { |user| > user.signup_step > 2 }). The method, proc or string should return or > evaluate to a true or false value. > > Regards, > Bas van Westing > >now how did I miss that ?! This is clearly a better route to go - for you and me, Daniello. thanx Bas Jodi --~--~---------~--~----~------------~-------~--~----~ You received this message because you are subscribed to the Google Groups "Ruby on Rails: Talk" group. To post to this group, send email to rubyonrails-talk-/JYPxA39Uh5TLH3MbocFFw@public.gmane.org To unsubscribe from this group, send email to rubyonrails-talk-unsubscribe-/JYPxA39Uh5TLH3MbocFFw@public.gmane.org For more options, visit this group at http://groups.google.com/group/rubyonrails-talk?hl=en -~----------~----~----~----~------~----~------~--~---