Responders

Dry-out your controllers with some responders

Transcript

1. Responders
   

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2. ©2015 Infinum student academy
   PostsController#create
   @post = Post.new(post_params)
   if @post.save(post_params)
   redirect_to @post
   flash[:notice] = 'Post was successfully updated.'
   else
   render :new
   end
   

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3. ©2015 Infinum student academy
   What about internationalization?
   

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4. ©2015 Infinum student academy
   PostsController#create
   @post = Post.new(post_params)
   if @post.save
   flash[:notice] = I18n.t(‘flash.posts.create.notice’)
   redirect_to @post
   else
   render :new
   end
   

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5. ©2015 Infinum student academy
   The update action is very similar
   

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6. ©2015 Infinum student academy
   PostsController#update
   @post = Post.find(params[:id])
   if @post.update(post_params)
   flash[:notice] = I18n.t(‘flash.posts.update.notice’)
   redirect_to @post
   else
   render :edit
   end
   

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7. ©2015 Infinum student academy
   The restful controller pseudocode:
   initialize_resource
   can it be saved?
   flash
   redirect
   else
   render
   end
   

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8. Meet the responders..
   

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9. ©2015 Infinum student academy
   Convenient wrappers for REST
   controllers
   @post = Post.create(post_params)
   respond_with @post
   

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10. ©2015 Infinum student academy
    Knows what translation to look at
    

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11. ©2015 Infinum student academy
    Universal translation for all controllers
    flash:
    actions:
    create:
    notice: "%{resource_name} was successfully created."
    update:
    notice: "%{resource_name} was successfully updated."
    destroy:
    notice: "%{resource_name} was successfully destroyed."
    alert: "%{resource_name} could not be destroyed."
    

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12. ©2015 Infinum student academy
    Translation per controller
    flash:
    posts:
    create:
    notice: "Your post was created and will be published soon"
    

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13. ©2015 Infinum student academy
    Need a non-standard redirect
    location?
    @post = Post.create(post_params)
    respond_with @post, location: -> { posts_path }
    

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14. ©2015 Infinum student academy
    Need a non-standard rendering
    template?
    @post = Post.create(post_params)
    respond_with @post, action: ‘shared/posts/new’
    

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15. History
    

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16. ©2015 Infinum student academy
    Responders
    • Extracted from Rails 4.2 to a separate gem
    • Maintained by Plataformatec
    • authors of Devise & Simple Form
    

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17. ©2015 Infinum student academy
    Why were they extracted from Rails?
    

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18. ©2015 Infinum student academy
    respond_to do |format|
    format.xml { render xml: @model }
    format.json { render json: @model }
    end
    is clearer than…
    respond_with @model
    

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19. ©2015 Infinum student academy
    I only use them for Html API’s
    

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20. Fin.
    

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