Issues with changing directory structure in rails3

dubstep · April 21, 2012, 7:23am

class BranchesController < ApplicationController
def branch
@branch = Branch.new (params[:branch])
branch_back = @branch.branch
end
end

in the model have one branch.rb
class Branch
def branch
end
end

In the view have one branches folder, also have the branch.html.erb in
that
folder.
<%= form_for(@branch) do |f| %>
<%end%>

routes.rb
*
*
match ‘branch’ => ‘branches#branch’
resources :branches

i am getting this following error
NoMethodError in BranchesController#branch

You have a nil object when you didn’t expect it!
You might have expected an instance of Array.
The error occurred while evaluating nil.each

What am I doing wrong?
Thank you

vishnu

amvis · April 21, 2012, 9:40am

I have changed the code like this
class BranchesController < ApplicationController
def branch
@branch = Branch.new
end

def create
@branch = Branch.new(params[:branch])
end
end
branch.html.erb in branches folder

<%= form_for(@branch) do |f| %>
<%end%>

Now the problem is if i want to display some value from branches
controller
to branch.html.erb, i have to define that in branch method
in BranchesController, but here all the functionality can be done in
create method in BranchesController, so that way i didn’t get any values
in
branch.html.erb, How to do that…?. How to write that in branch
method?.. if the branch method not in BranchesController, the error will
be
undefined method model_name nill class, also if the create method not
in BranchesController, the error will be the action create not found

What am i doing wrong
thanks…

amvis · April 21, 2012, 9:57am

On 21 April 2012 08:39, amvis [email protected] wrote:

branch.html.erb in branches folder
if the branch method not inBranchesController, the error will be undefined
method model_name nill class, also if the create method not
inBranchesController, the error will be the action create not found

What am i doing wrong

I don’t have much idea about what problem you are trying to describe,
I presume English is not your first language and understand it can be
difficult to explain a problem clearly. If I am right then you have
an action branch in the branches controller but have the problem that
in order for data to be seen in the view then you have to setup
variables in that action. If you don’t want to set them up there then
possibly a before_filter is what you want.

If I am not understanding the problem correctly then please try again
to explain it. Cut your example down to the absolute minimum code
required and show what you are trying to do and what the problem is.
After writing your description of the problem imagine yourself as
someone who knows nothing about your requirement, read your
description carefully, and make sure the description of the problem is
clear.

Colin

amvis · April 21, 2012, 10:20am

On 21 April 2012 09:14, amvis [email protected] wrote:

def create

if i have to get @name in branch.html.erb, i have to define that branch
action in BranchesController, am i correct…?. So in this application all
the main function done in create action in BranchesController. In that way
how to get that values in branch.html.erb

Use before_filter to setup @name for both create and branch.

Colin

amvis · April 21, 2012, 10:15am

On Saturday, 21 April 2012 03:56:02 UTC-4, Colin L. wrote:

end
in BranchesController, but here all the functionality can be done in

I don’t have much idea about what problem you are trying to describe,
I presume English is not your first language and understand it can be
difficult to explain a problem clearly. If I am right then you have
an action branch in the branches controller but have the problem that
in order for data to be seen in the view then you have to setup
variables in that action. If you don’t want to set them up there then
possibly a before_filter is what you want.

Thanks colin,
what i am trying to do,

branches_controller
*
*
class BranchesController < ApplicationController
def branch
@branch = Branch.new
end

def create
@branch = Branch.new(params[:branch])
@name = “vishnu”
end
end

branch.html.erb

new <%=@name %>

<%= form_for(@branch) do |f| %> <%= f.submit "Save" %> <%end%>

if i have to get @name in branch.html.erb, i have to define that branch
action in BranchesController, am i correct…?. So in this application
all
the main function done in create action in BranchesController. In that
way
how to get that values in branch.html.erb

Vishnu

amvis · April 21, 2012, 10:46am

On 21 April 2012 09:35, amvis [email protected] wrote:

class BranchesController < ApplicationController
branch.html.erb
how to get that values in branch.html.erb

def create
@branch = Branch.new(params[:branch])
@name = “vishnu”
end
end

Is it correct way…?

No, have a look at the Rails Guide on Action Controller Overview to
see how to use it. Also google for
rails before_filter
to find many examples and documentation.

Colin

amvis · April 21, 2012, 10:36am

On Saturday, 21 April 2012 04:19:05 UTC-4, Colin L. wrote:

end
<%= f.submit “Save” %>
<%end%>

if i have to get @name in branch.html.erb, i have to define that branch
action in BranchesController, am i correct…?. So in this application
all
the main function done in create action in BranchesController. In that
way
how to get that values in branch.html.erb
Thanks

Can i do like that,

class BranchesController < ApplicationController
 before_filter :branch,:create
def branch
  @branch = Branch.new
end

def create
  @branch = Branch.new(params[:branch])
  @name = "vishnu"
end

end

Is it correct way…?

amvis · April 22, 2012, 12:46pm

On Saturday, 21 April 2012 04:44:57 UTC-4, Colin L. wrote:

branches_controller
end
all
def branch

No, have a look at the Rails Guide on Action Controller Overview to
see how to use it. Also google for
rails before_filter
to find many examples and documentation.

  i have used this

http://rails-bestpractices.com/posts/57-substituting-before_filter-load_object,
but i didn’t get that correctly, when i use the access
specifier(private,protected),i am trying that for 2 days, i have got the
issues…can u rearrange with the above code, for accessing
instance variable in all action…

Thank you
vishnu

amvis · April 22, 2012, 12:50pm

On 22 April 2012 11:45, amvis [email protected] wrote:

i have used

thishttp://rails-bestpractices.com/posts/57-substituting-before_filter-load_object,

but i didn’t get that correctly, when i use the access
specifier(private,protected),i am trying that for 2 days, i have got the
issues…can u rearrange with the above code, for accessing
instancevariablein all action…

Show us what you tried and what happened.

Colin

amvis · April 22, 2012, 1:00pm

On Sunday, 22 April 2012 06:51:09 UTC-4, Colin L. wrote:

issues…can u rearrange with the above code, for accessing
@branch = Branch.new
    * puts "name...#{@name}"  //i didn't get the @name variable *

end

def create
  @branch = Branch.new(params[:branch])
  @name = "vishnu"
end
end

Here the create is my calling function,i mean when i click the button
that create function will call, ie Branches#create.

What am i wrong…?*
Thank you*
vishnu*

amvis · April 22, 2012, 12:52pm

On 22 April 2012 11:49, Colin L. [email protected] wrote:

On 22 April 2012 11:45, amvis [email protected] wrote:

i have used

thishttp://rails-bestpractices.com/posts/57-substituting-before_filter-load_object,

but i didn’t get that correctly, when i use the access
specifier(private,protected),i am trying that for 2 days, i have got the
issues…can u rearrange with the above code, for accessing
instancevariablein all action…

Show us what you tried and what happened.

Just use a simple before_filter initially to get it working.

Colin

amvis · April 23, 2012, 5:56am

On Sunday, 22 April 2012 07:10:02 UTC-4, Colin L. wrote:

end
end

Thanks colin, thank you
when i compare this code with my application code, in the above code,
before doing all the method, the setup method will run, and set the
variables, so that can be accessed for all methods. But here i have one
doubt, This is my application structure…

-Myapp

* -Controller*
       ->pages_controller.rb
 *-View*
       *-pages*
          ->page.html.erb

class PagesController < ApplicationController

def page

end

end
My doubt is if i display any variable(example is @name = vishnu) in
page.html.erb, i have to create one page action in PagesController…?
or
any other way to access…?

amvis · April 22, 2012, 1:11pm

On 22 April 2012 11:59, amvis [email protected] wrote:

but i didn’t get that correctly, when i use the access
before_filter :create
@name = “vishnu”
end
end

Here the create is my calling function,i mean when i click the button that
create function will call, ie Branches#create.

Don’t try and call one of the actions in the filter. Add a new method
that is called from the before filter and sets up what you want, so
possibly
before_filter :setup

and

private
def setup
@name = “vishnu”
end

Then setup will be called before each action.
By putting it in the private section of the controller the setup
method is not available as an action itself, but just as a method that
can be called within the controller

Colin

amvis · April 23, 2012, 9:46am

On 23 April 2012 04:55, amvis [email protected] wrote:

 ->pages_controller.rb
end
My doubt is if i display any variable(example is @name = vishnu) in
page.html.erb, i have to create one page action in PagesController…? or
any other way to access…?

Sorry, no idea what you mean.

Colin