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

*
*

*
*

*
*

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Search Discussions

  • Amvis at Apr 21, 2012 at 7:39 am
    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..


    On Saturday, 21 April 2012 01:21:51 UTC-4, amvis wrote:

    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

    *
    *

    *
    *

    *
    *
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  • Colin Law at Apr 21, 2012 at 7:56 am

    On 21 April 2012 08:39, amvis wrote:
    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
    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
    thanks..


    On Saturday, 21 April 2012 01:21:51 UTC-4, amvis wrote:

    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


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  • Amvis at Apr 21, 2012 at 8:14 am

    On Saturday, 21 April 2012 03:56:02 UTC-4, Colin Law wrote:
    On 21 April 2012 08:39, amvis wrote:
    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
    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*
    <h4> new <%=@name %> </h4>
    <%= 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

    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
    thanks..


    On Saturday, 21 April 2012 01:21:51 UTC-4, amvis wrote:

    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


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  • Colin Law at Apr 21, 2012 at 8:19 am

    On 21 April 2012 09:14, amvis wrote:
    ...
    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
    <h4> new  <%=@name %> </h4>
    <%= 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
    Use before_filter to setup @name for both create and branch.

    Colin

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  • Amvis at Apr 21, 2012 at 8:35 am

    On Saturday, 21 April 2012 04:19:05 UTC-4, Colin Law wrote:
    On 21 April 2012 09:14, amvis wrote:
    ...
    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
    <h4> new <%=@name %> </h4>
    <%= 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
    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...?


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

    Colin
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  • Colin Law at Apr 21, 2012 at 8:45 am

    On 21 April 2012 09:35, amvis wrote:
    On Saturday, 21 April 2012 04:19:05 UTC-4, Colin Law wrote:
    On 21 April 2012 09:14, amvis wrote:
    ...
    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
    <h4> new  <%=@name %> </h4>
    <%= 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
    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...?
    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
    Use before_filter to setup @name for both create and branch.

    Colin
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  • Amvis at Apr 22, 2012 at 10:45 am

    On Saturday, 21 April 2012 04:44:57 UTC-4, Colin Law wrote:
    On 21 April 2012 09:35, amvis wrote:

    On Saturday, 21 April 2012 04:19:05 UTC-4, Colin Law wrote:
    On 21 April 2012 09:14, amvis wrote:
    ...
    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
    <h4> new <%=@name %> </h4>
    <%= 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
    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...?
    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


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

    Colin
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  • Colin Law at Apr 22, 2012 at 10:49 am

    On 22 April 2012 11:45, amvis wrote:
    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...
    Show us what you tried and what happened.

    Colin

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  • Colin Law at Apr 22, 2012 at 10:51 am

    On 22 April 2012 11:49, Colin Law wrote:
    On 22 April 2012 11:45, amvis wrote:

    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...
    Show us what you tried and what happened.
    Just use a simple before_filter initially to get it working.

    Colin

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  • Amvis at Apr 22, 2012 at 10:59 am

    On Sunday, 22 April 2012 06:51:09 UTC-4, Colin Law wrote:
    On 22 April 2012 11:49, Colin Law wrote:
    On 22 April 2012 11:45, amvis wrote:

    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...
    Show us what you tried and what happened.
    Just use a simple before_filter initially to get it working.

    class BranchesController < ApplicationController
    before_filter :create

    def branch
    @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*

    Colin
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  • Colin Law at Apr 22, 2012 at 11:10 am

    On 22 April 2012 11:59, amvis wrote:
    On Sunday, 22 April 2012 06:51:09 UTC-4, Colin Law wrote:
    On 22 April 2012 11:49, Colin Law wrote:
    On 22 April 2012 11:45, amvis wrote:

    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...
    Show us what you tried and what happened.
    Just use a simple before_filter initially to get it working.

    class BranchesController < ApplicationController
    before_filter :create

    def branch
    @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.
    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

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  • Amvis at Apr 23, 2012 at 3:55 am

    On Sunday, 22 April 2012 07:10:02 UTC-4, Colin Law wrote:
    On 22 April 2012 11:59, amvis wrote:

    On Sunday, 22 April 2012 06:51:09 UTC-4, Colin Law wrote:
    On 22 April 2012 11:49, Colin Law wrote:
    On 22 April 2012 11:45, amvis wrote:

    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...
    Show us what you tried and what happened.
    Just use a simple before_filter initially to get it working.

    class BranchesController < ApplicationController
    before_filter :create

    def branch
    @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.
    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
    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....?





    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
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  • Colin Law at Apr 23, 2012 at 7:45 am

    On 23 April 2012 04:55, amvis wrote:
    ...
    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....?
    Sorry, no idea what you mean.

    Colin

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postedApr 21, '12 at 5:22a
activeApr 23, '12 at 7:45a
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