undefined method `image' for #












0















I am using the Paperclip gem. A user can submit a location with an image. I do not want the user to duplicate an already submitted location, but they can add an image to it.



I have been trying to figure it out. I will leave the important code below:



location.rb



class Location < ApplicationRecord
has_many :submissions
has_many :users, through: :submissions
# Allows submission objects
accepts_nested_attributes_for :submissions


submission.rb



class Submission < ApplicationRecord
belongs_to :user
belongs_to :location

has_attached_file :image, styles: { large: "600x600>", medium: "300x300>", thumb: "150x150#" }
validates_attachment_content_type :image, content_type: /Aimage/.*z/


locations_controller.rb



class LocationsController < ApplicationController

# Before actions get routed and ran, find_location will occur
before_action :find_location, only: [:show, :edit, :update, :destroy]


# For the Locations/index.html.erb
def index
@locations = Location.all
end

# Binds submission object to the form in new.html.erb
def new
@locations = Location.new
@locations.submissions.build
end

# For creating a new location in the new.html.erb form
def create
@locations = Location.new(user_params)
# Everything went well. User will be sent to @locations show page
if @locations.save
# Redirects to user submitted locations
redirect_to @locations
else
render 'new'
end
end

# Finds new location user submitted by its unique id
def show
end

# Allowing user to update their submitted location
def edit
end

# Updates users edited submission
def update
if @locations.update(user_params)
# Redirects to user submitted locations
redirect_to @locations
else
render 'edit'
end
end

# Deletes users submission
def destroy
@locations.destroy
# Redirects to user submitted locations
redirect_to @locations
end

private

# Used for finding user submitted location (Prevents DRY)
def find_location
@locations = Location.find(params[:id])
end

# Strong parameters for security - Defines what can be update/created in location model
def user_params
params.require(:location).permit(:city, :state, :submissions_attributes => [:image])
end
end


_form.html.erb



<%= form_for @locations, html: {multipart: true} do |f| %>
.
.
.
<!-- User enters image-->
<%= f.fields_for :submissions do |s| %>
<div class="form-group">
<h3>Upload Image:</h3>
<%= s.file_field :image, class: 'form-control' %>
</div>
<% end %>
<% end %>


show.html.erb



<h3>Image: <%= image_tag @locations.image.url(:medium) %></h3>


I get an error:



"undefined method `image' for.."









share|improve this question





























    0















    I am using the Paperclip gem. A user can submit a location with an image. I do not want the user to duplicate an already submitted location, but they can add an image to it.



    I have been trying to figure it out. I will leave the important code below:



    location.rb



    class Location < ApplicationRecord
    has_many :submissions
    has_many :users, through: :submissions
    # Allows submission objects
    accepts_nested_attributes_for :submissions


    submission.rb



    class Submission < ApplicationRecord
    belongs_to :user
    belongs_to :location

    has_attached_file :image, styles: { large: "600x600>", medium: "300x300>", thumb: "150x150#" }
    validates_attachment_content_type :image, content_type: /Aimage/.*z/


    locations_controller.rb



    class LocationsController < ApplicationController

    # Before actions get routed and ran, find_location will occur
    before_action :find_location, only: [:show, :edit, :update, :destroy]


    # For the Locations/index.html.erb
    def index
    @locations = Location.all
    end

    # Binds submission object to the form in new.html.erb
    def new
    @locations = Location.new
    @locations.submissions.build
    end

    # For creating a new location in the new.html.erb form
    def create
    @locations = Location.new(user_params)
    # Everything went well. User will be sent to @locations show page
    if @locations.save
    # Redirects to user submitted locations
    redirect_to @locations
    else
    render 'new'
    end
    end

    # Finds new location user submitted by its unique id
    def show
    end

    # Allowing user to update their submitted location
    def edit
    end

    # Updates users edited submission
    def update
    if @locations.update(user_params)
    # Redirects to user submitted locations
    redirect_to @locations
    else
    render 'edit'
    end
    end

    # Deletes users submission
    def destroy
    @locations.destroy
    # Redirects to user submitted locations
    redirect_to @locations
    end

    private

    # Used for finding user submitted location (Prevents DRY)
    def find_location
    @locations = Location.find(params[:id])
    end

    # Strong parameters for security - Defines what can be update/created in location model
    def user_params
    params.require(:location).permit(:city, :state, :submissions_attributes => [:image])
    end
    end


    _form.html.erb



    <%= form_for @locations, html: {multipart: true} do |f| %>
    .
    .
    .
    <!-- User enters image-->
    <%= f.fields_for :submissions do |s| %>
    <div class="form-group">
    <h3>Upload Image:</h3>
    <%= s.file_field :image, class: 'form-control' %>
    </div>
    <% end %>
    <% end %>


    show.html.erb



    <h3>Image: <%= image_tag @locations.image.url(:medium) %></h3>


    I get an error:



    "undefined method `image' for.."









    share|improve this question



























      0












      0








      0








      I am using the Paperclip gem. A user can submit a location with an image. I do not want the user to duplicate an already submitted location, but they can add an image to it.



      I have been trying to figure it out. I will leave the important code below:



      location.rb



      class Location < ApplicationRecord
      has_many :submissions
      has_many :users, through: :submissions
      # Allows submission objects
      accepts_nested_attributes_for :submissions


      submission.rb



      class Submission < ApplicationRecord
      belongs_to :user
      belongs_to :location

      has_attached_file :image, styles: { large: "600x600>", medium: "300x300>", thumb: "150x150#" }
      validates_attachment_content_type :image, content_type: /Aimage/.*z/


      locations_controller.rb



      class LocationsController < ApplicationController

      # Before actions get routed and ran, find_location will occur
      before_action :find_location, only: [:show, :edit, :update, :destroy]


      # For the Locations/index.html.erb
      def index
      @locations = Location.all
      end

      # Binds submission object to the form in new.html.erb
      def new
      @locations = Location.new
      @locations.submissions.build
      end

      # For creating a new location in the new.html.erb form
      def create
      @locations = Location.new(user_params)
      # Everything went well. User will be sent to @locations show page
      if @locations.save
      # Redirects to user submitted locations
      redirect_to @locations
      else
      render 'new'
      end
      end

      # Finds new location user submitted by its unique id
      def show
      end

      # Allowing user to update their submitted location
      def edit
      end

      # Updates users edited submission
      def update
      if @locations.update(user_params)
      # Redirects to user submitted locations
      redirect_to @locations
      else
      render 'edit'
      end
      end

      # Deletes users submission
      def destroy
      @locations.destroy
      # Redirects to user submitted locations
      redirect_to @locations
      end

      private

      # Used for finding user submitted location (Prevents DRY)
      def find_location
      @locations = Location.find(params[:id])
      end

      # Strong parameters for security - Defines what can be update/created in location model
      def user_params
      params.require(:location).permit(:city, :state, :submissions_attributes => [:image])
      end
      end


      _form.html.erb



      <%= form_for @locations, html: {multipart: true} do |f| %>
      .
      .
      .
      <!-- User enters image-->
      <%= f.fields_for :submissions do |s| %>
      <div class="form-group">
      <h3>Upload Image:</h3>
      <%= s.file_field :image, class: 'form-control' %>
      </div>
      <% end %>
      <% end %>


      show.html.erb



      <h3>Image: <%= image_tag @locations.image.url(:medium) %></h3>


      I get an error:



      "undefined method `image' for.."









      share|improve this question
















      I am using the Paperclip gem. A user can submit a location with an image. I do not want the user to duplicate an already submitted location, but they can add an image to it.



      I have been trying to figure it out. I will leave the important code below:



      location.rb



      class Location < ApplicationRecord
      has_many :submissions
      has_many :users, through: :submissions
      # Allows submission objects
      accepts_nested_attributes_for :submissions


      submission.rb



      class Submission < ApplicationRecord
      belongs_to :user
      belongs_to :location

      has_attached_file :image, styles: { large: "600x600>", medium: "300x300>", thumb: "150x150#" }
      validates_attachment_content_type :image, content_type: /Aimage/.*z/


      locations_controller.rb



      class LocationsController < ApplicationController

      # Before actions get routed and ran, find_location will occur
      before_action :find_location, only: [:show, :edit, :update, :destroy]


      # For the Locations/index.html.erb
      def index
      @locations = Location.all
      end

      # Binds submission object to the form in new.html.erb
      def new
      @locations = Location.new
      @locations.submissions.build
      end

      # For creating a new location in the new.html.erb form
      def create
      @locations = Location.new(user_params)
      # Everything went well. User will be sent to @locations show page
      if @locations.save
      # Redirects to user submitted locations
      redirect_to @locations
      else
      render 'new'
      end
      end

      # Finds new location user submitted by its unique id
      def show
      end

      # Allowing user to update their submitted location
      def edit
      end

      # Updates users edited submission
      def update
      if @locations.update(user_params)
      # Redirects to user submitted locations
      redirect_to @locations
      else
      render 'edit'
      end
      end

      # Deletes users submission
      def destroy
      @locations.destroy
      # Redirects to user submitted locations
      redirect_to @locations
      end

      private

      # Used for finding user submitted location (Prevents DRY)
      def find_location
      @locations = Location.find(params[:id])
      end

      # Strong parameters for security - Defines what can be update/created in location model
      def user_params
      params.require(:location).permit(:city, :state, :submissions_attributes => [:image])
      end
      end


      _form.html.erb



      <%= form_for @locations, html: {multipart: true} do |f| %>
      .
      .
      .
      <!-- User enters image-->
      <%= f.fields_for :submissions do |s| %>
      <div class="form-group">
      <h3>Upload Image:</h3>
      <%= s.file_field :image, class: 'form-control' %>
      </div>
      <% end %>
      <% end %>


      show.html.erb



      <h3>Image: <%= image_tag @locations.image.url(:medium) %></h3>


      I get an error:



      "undefined method `image' for.."






      ruby-on-rails forms paperclip






      share|improve this question















      share|improve this question













      share|improve this question




      share|improve this question








      edited Nov 21 '18 at 5:42









      sawa

      132k29205304




      132k29205304










      asked Nov 21 '18 at 2:32









      Felix DoeFelix Doe

      1511112




      1511112
























          1 Answer
          1






          active

          oldest

          votes


















          2














          It looks like you're trying to do form tags for collections of records, which I don't think will work. Instead, I think you need a structure something like:



          <% @locations.each do |location| %>
          <%= form_for location, html: {multipart: true} do |f| %>
          .
          .
          .
          <!-- User enters image-->
          <%= f.fields_for location.submissions.new do |s| %>
          <div class="form-group">
          <h3>Upload Image:</h3>
          <%= s.file_field :image, class: 'form-control' %>
          </div>
          <% end %>
          <% end %>


          both the form_for and fields_for need to point to a singular resource.



          Side note: Paperclip has been deprecated, and it is recommended that you instead use the Rails internal ActiveStorage.






          share|improve this answer
























          • So I took your advise and converted to ActiveStorage. I think my main problem is that I have a Many-To-Many relationship which is throwing me off. I think I am able to add an image but I am having trouble displaying it. In my show.html.erb for locations I have "<%= image_tag(@locations.image) %>" and I am still getting the same error as above. Do you have any clue on what I should do here?

            – Felix Doe
            Nov 22 '18 at 18:25











          • So the thing to keep in mind here is that you're dealing with an array of locations that each have an array of submissions with images. So you need to loop over the locations, then loop over each location's submissions, then render an image tag for each of those. Something like <% @locations.each do |location| %><% location.submissions.each do |submission| %><%= image_tag(submission.image) %><% end %><% end %>.

            – lobati
            Nov 22 '18 at 23:17











          Your Answer






          StackExchange.ifUsing("editor", function () {
          StackExchange.using("externalEditor", function () {
          StackExchange.using("snippets", function () {
          StackExchange.snippets.init();
          });
          });
          }, "code-snippets");

          StackExchange.ready(function() {
          var channelOptions = {
          tags: "".split(" "),
          id: "1"
          };
          initTagRenderer("".split(" "), "".split(" "), channelOptions);

          StackExchange.using("externalEditor", function() {
          // Have to fire editor after snippets, if snippets enabled
          if (StackExchange.settings.snippets.snippetsEnabled) {
          StackExchange.using("snippets", function() {
          createEditor();
          });
          }
          else {
          createEditor();
          }
          });

          function createEditor() {
          StackExchange.prepareEditor({
          heartbeatType: 'answer',
          autoActivateHeartbeat: false,
          convertImagesToLinks: true,
          noModals: true,
          showLowRepImageUploadWarning: true,
          reputationToPostImages: 10,
          bindNavPrevention: true,
          postfix: "",
          imageUploader: {
          brandingHtml: "Powered by u003ca class="icon-imgur-white" href="https://imgur.com/"u003eu003c/au003e",
          contentPolicyHtml: "User contributions licensed under u003ca href="https://creativecommons.org/licenses/by-sa/3.0/"u003ecc by-sa 3.0 with attribution requiredu003c/au003e u003ca href="https://stackoverflow.com/legal/content-policy"u003e(content policy)u003c/au003e",
          allowUrls: true
          },
          onDemand: true,
          discardSelector: ".discard-answer"
          ,immediatelyShowMarkdownHelp:true
          });


          }
          });














          draft saved

          draft discarded


















          StackExchange.ready(
          function () {
          StackExchange.openid.initPostLogin('.new-post-login', 'https%3a%2f%2fstackoverflow.com%2fquestions%2f53404524%2fundefined-method-image-for-location-0x%23new-answer', 'question_page');
          }
          );

          Post as a guest















          Required, but never shown

























          1 Answer
          1






          active

          oldest

          votes








          1 Answer
          1






          active

          oldest

          votes









          active

          oldest

          votes






          active

          oldest

          votes









          2














          It looks like you're trying to do form tags for collections of records, which I don't think will work. Instead, I think you need a structure something like:



          <% @locations.each do |location| %>
          <%= form_for location, html: {multipart: true} do |f| %>
          .
          .
          .
          <!-- User enters image-->
          <%= f.fields_for location.submissions.new do |s| %>
          <div class="form-group">
          <h3>Upload Image:</h3>
          <%= s.file_field :image, class: 'form-control' %>
          </div>
          <% end %>
          <% end %>


          both the form_for and fields_for need to point to a singular resource.



          Side note: Paperclip has been deprecated, and it is recommended that you instead use the Rails internal ActiveStorage.






          share|improve this answer
























          • So I took your advise and converted to ActiveStorage. I think my main problem is that I have a Many-To-Many relationship which is throwing me off. I think I am able to add an image but I am having trouble displaying it. In my show.html.erb for locations I have "<%= image_tag(@locations.image) %>" and I am still getting the same error as above. Do you have any clue on what I should do here?

            – Felix Doe
            Nov 22 '18 at 18:25











          • So the thing to keep in mind here is that you're dealing with an array of locations that each have an array of submissions with images. So you need to loop over the locations, then loop over each location's submissions, then render an image tag for each of those. Something like <% @locations.each do |location| %><% location.submissions.each do |submission| %><%= image_tag(submission.image) %><% end %><% end %>.

            – lobati
            Nov 22 '18 at 23:17
















          2














          It looks like you're trying to do form tags for collections of records, which I don't think will work. Instead, I think you need a structure something like:



          <% @locations.each do |location| %>
          <%= form_for location, html: {multipart: true} do |f| %>
          .
          .
          .
          <!-- User enters image-->
          <%= f.fields_for location.submissions.new do |s| %>
          <div class="form-group">
          <h3>Upload Image:</h3>
          <%= s.file_field :image, class: 'form-control' %>
          </div>
          <% end %>
          <% end %>


          both the form_for and fields_for need to point to a singular resource.



          Side note: Paperclip has been deprecated, and it is recommended that you instead use the Rails internal ActiveStorage.






          share|improve this answer
























          • So I took your advise and converted to ActiveStorage. I think my main problem is that I have a Many-To-Many relationship which is throwing me off. I think I am able to add an image but I am having trouble displaying it. In my show.html.erb for locations I have "<%= image_tag(@locations.image) %>" and I am still getting the same error as above. Do you have any clue on what I should do here?

            – Felix Doe
            Nov 22 '18 at 18:25











          • So the thing to keep in mind here is that you're dealing with an array of locations that each have an array of submissions with images. So you need to loop over the locations, then loop over each location's submissions, then render an image tag for each of those. Something like <% @locations.each do |location| %><% location.submissions.each do |submission| %><%= image_tag(submission.image) %><% end %><% end %>.

            – lobati
            Nov 22 '18 at 23:17














          2












          2








          2







          It looks like you're trying to do form tags for collections of records, which I don't think will work. Instead, I think you need a structure something like:



          <% @locations.each do |location| %>
          <%= form_for location, html: {multipart: true} do |f| %>
          .
          .
          .
          <!-- User enters image-->
          <%= f.fields_for location.submissions.new do |s| %>
          <div class="form-group">
          <h3>Upload Image:</h3>
          <%= s.file_field :image, class: 'form-control' %>
          </div>
          <% end %>
          <% end %>


          both the form_for and fields_for need to point to a singular resource.



          Side note: Paperclip has been deprecated, and it is recommended that you instead use the Rails internal ActiveStorage.






          share|improve this answer













          It looks like you're trying to do form tags for collections of records, which I don't think will work. Instead, I think you need a structure something like:



          <% @locations.each do |location| %>
          <%= form_for location, html: {multipart: true} do |f| %>
          .
          .
          .
          <!-- User enters image-->
          <%= f.fields_for location.submissions.new do |s| %>
          <div class="form-group">
          <h3>Upload Image:</h3>
          <%= s.file_field :image, class: 'form-control' %>
          </div>
          <% end %>
          <% end %>


          both the form_for and fields_for need to point to a singular resource.



          Side note: Paperclip has been deprecated, and it is recommended that you instead use the Rails internal ActiveStorage.







          share|improve this answer












          share|improve this answer



          share|improve this answer










          answered Nov 21 '18 at 4:46









          lobatilobati

          2,58432241




          2,58432241













          • So I took your advise and converted to ActiveStorage. I think my main problem is that I have a Many-To-Many relationship which is throwing me off. I think I am able to add an image but I am having trouble displaying it. In my show.html.erb for locations I have "<%= image_tag(@locations.image) %>" and I am still getting the same error as above. Do you have any clue on what I should do here?

            – Felix Doe
            Nov 22 '18 at 18:25











          • So the thing to keep in mind here is that you're dealing with an array of locations that each have an array of submissions with images. So you need to loop over the locations, then loop over each location's submissions, then render an image tag for each of those. Something like <% @locations.each do |location| %><% location.submissions.each do |submission| %><%= image_tag(submission.image) %><% end %><% end %>.

            – lobati
            Nov 22 '18 at 23:17



















          • So I took your advise and converted to ActiveStorage. I think my main problem is that I have a Many-To-Many relationship which is throwing me off. I think I am able to add an image but I am having trouble displaying it. In my show.html.erb for locations I have "<%= image_tag(@locations.image) %>" and I am still getting the same error as above. Do you have any clue on what I should do here?

            – Felix Doe
            Nov 22 '18 at 18:25











          • So the thing to keep in mind here is that you're dealing with an array of locations that each have an array of submissions with images. So you need to loop over the locations, then loop over each location's submissions, then render an image tag for each of those. Something like <% @locations.each do |location| %><% location.submissions.each do |submission| %><%= image_tag(submission.image) %><% end %><% end %>.

            – lobati
            Nov 22 '18 at 23:17

















          So I took your advise and converted to ActiveStorage. I think my main problem is that I have a Many-To-Many relationship which is throwing me off. I think I am able to add an image but I am having trouble displaying it. In my show.html.erb for locations I have "<%= image_tag(@locations.image) %>" and I am still getting the same error as above. Do you have any clue on what I should do here?

          – Felix Doe
          Nov 22 '18 at 18:25





          So I took your advise and converted to ActiveStorage. I think my main problem is that I have a Many-To-Many relationship which is throwing me off. I think I am able to add an image but I am having trouble displaying it. In my show.html.erb for locations I have "<%= image_tag(@locations.image) %>" and I am still getting the same error as above. Do you have any clue on what I should do here?

          – Felix Doe
          Nov 22 '18 at 18:25













          So the thing to keep in mind here is that you're dealing with an array of locations that each have an array of submissions with images. So you need to loop over the locations, then loop over each location's submissions, then render an image tag for each of those. Something like <% @locations.each do |location| %><% location.submissions.each do |submission| %><%= image_tag(submission.image) %><% end %><% end %>.

          – lobati
          Nov 22 '18 at 23:17





          So the thing to keep in mind here is that you're dealing with an array of locations that each have an array of submissions with images. So you need to loop over the locations, then loop over each location's submissions, then render an image tag for each of those. Something like <% @locations.each do |location| %><% location.submissions.each do |submission| %><%= image_tag(submission.image) %><% end %><% end %>.

          – lobati
          Nov 22 '18 at 23:17




















          draft saved

          draft discarded




















































          Thanks for contributing an answer to Stack Overflow!


          • Please be sure to answer the question. Provide details and share your research!

          But avoid



          • Asking for help, clarification, or responding to other answers.

          • Making statements based on opinion; back them up with references or personal experience.


          To learn more, see our tips on writing great answers.




          draft saved


          draft discarded














          StackExchange.ready(
          function () {
          StackExchange.openid.initPostLogin('.new-post-login', 'https%3a%2f%2fstackoverflow.com%2fquestions%2f53404524%2fundefined-method-image-for-location-0x%23new-answer', 'question_page');
          }
          );

          Post as a guest















          Required, but never shown





















































          Required, but never shown














          Required, but never shown












          Required, but never shown







          Required, but never shown

































          Required, but never shown














          Required, but never shown












          Required, but never shown







          Required, but never shown







          Popular posts from this blog

          How to change which sound is reproduced for terminal bell?

          Can I use Tabulator js library in my java Spring + Thymeleaf project?

          Title Spacing in Bjornstrup Chapter, Removing Chapter Number From Contents