I want to create a wizard in js.
steps :first_step,
:second_step
In my 'controller_step'
def show
case step
when :first_step
#r = R.new
when :second_step
end
render_wizard
end
def update
case step
when :first_step
#r = R.new(r_params)
when :second_step
end
render_wizard #r
end
I have problems after the update of the first step. I'm receive the following error message:
"Missing template controller_step/second_step, application/second_step
with {:locale=>[:en], :formats=>[:html], :variants=>[],
:handlers=>[:erb, :builder, :raw, :ruby, :coffee, :jbuilder]}. ".
How can I force loading of js templete? I would load "second_step.js.erb".
I tried to change the update method:
respond_to do |format|
format.js { render :js => ( render_wizard #r ) }
end
Of course I get the following error:
"AbstractController::DoubleRenderError in ...Controller#update Render
and/or redirect were called multiple times in this action. Please note
that you may only call render OR redirect, and at most once per
action. Also note that neither redirect nor render terminate execution
of the action, so if you want to exit an action after redirecting, you
need to do something like "redirect_to(...) and return"."
I also tried to change the code (in update):
respond_to do |format|
format.js { render :js => ( render_wizard #room_types and return ) }
end
I'm get the same error ( ... application/second_step with {:locale=>[:en], :formats=>[:html] .... )
P.S.
In view of the first step:
<%= form_for(#r, url: wizard_path, method: :put, remote: true) do |f| %>
....
<%= f.submit "Submit", class: "btn btn-default" %>
<% end %>
How do I fix ? thanks in advance
The #render_wizard method defined in the Wicked::Controller::Concerns::RenderRedirect is a wrapper method around the ActionController::Base#render method. It
accepts a hash of options and passes it down to the controller's regular #render method.
This is the source code from the Wicked library:
def render_wizard(resource = nil, options = {})
...
if #skip_to
...
else
render_step wizard_value(step), options
end
end
def render_step(the_step, options = {})
if the_step.nil? || the_step.to_s == Wicked::FINISH_STEP
...
else
render the_step, options #<-- Here
end
end
Your code:
respond_to do |format|
format.js { render :js => ( render_wizard #r ) }
end
is basically doing:
respond_to do |format|
format.js { render :js => ( render #r ) }
end
which is in fact calling the render method twice.
As it is searching for a .html template rather than a .js.erb one, try adding a formats: 'js' option to the render_wizard method. It should prepend ['js'] to the :formats=>[:html] we see in the Missing template error message.
respond_to do |format|
format.js { render_wizard(#r, formats: 'js') }
end
also, make sure the template's filename follows the rails convention and start with a _. (ie: _second_step.js.erb)
About the double render error, you are correct. You must return from the controller #show or #update method and prevent further code from calling the #render method a second time. You seem to have fixed that problem already.
EDIT#1
It seems like you may be able to call this method directly in your controller.. :
def render_step(the_step, options = {})
# Wicked::FINISH_STEP = "wicked_finish"
if the_step.nil? || the_step.to_s == Wicked::FINISH_STEP
redirect_to_finish_wizard options
else
render the_step, options
end
end
I believe the_step will be the partial's name. I think you should be able to call the #render_step method from your controller.
You may be able to do:
def show
respond_to do |f|
f.js do
case step
when :first_step
#r = R.new
render_step(step) and return
when :second_step
...
end
end
end
end
I solved in this way:
in r model:
validates :x, presence: true
in step controller :
...
steps :first_step,
:second_step,
:finish_step
...
def show
case step
when :first_step
#room_types = R.new
end
render_wizard
end
def update
case step
when :view_new_room_type_step
#r = R.create(r_params)
when :view_desc_step
#r = R.find(params[:r][:id])
#r.update(r_params)
end
respond_to do |format|
if !#r.errors.any?
format.js { !next_step?(:finish_step) ? ( render next_wizard_path ) : ( redirect_to_finish_wizard ) }
else
format.js { render wizard_path, r: #r }
end
end
end
private
...
def redirect_to_finish_wizard
redirect_to r_index_path , notice: "Ok"
end
in first_step.js.erb
$("#modal").html("<%= escape_javascript(render 'form_first_step') %>")
in _form_first_step.html.erb:
<% if #r.errors.any? %>
<div class="alert fade in alert-danger alert-dismissable"><button aria-hidden="true" class="close" data-dismiss="alert" type="button">×</button>
<ul>
<% #r.errors.full_messages.each do |msg| %>
<%= content_tag :li, msg, :id => "error_#{msg}" if msg.is_a?(String) %>
<% end %>
</ul>
</div>
<% end %>
<%= form_for(#room_types, url: wizard_path, method: :put, remote: true) do |f| %>
...
<% end %>
in second form ( of second step ):
<%= form_for(#room_types, url: wizard_path(:second_step), method: :put, remote: true) do |f| %>
....
<%= f.hidden_field :id %>
<% end %>
Idea: to validate the data in the steps you can use jquery-form-validator-rails
Related
I'm working on an dynamic edit of an article using rails. On each articles can be added paragraphs. I wanted to use Ajax with Jquery following the 136-jquery-ajax-revised tutorial from railscast. I created the template for the form and the new.js.erb response but I keep geting same error:
ParagraphsController#new is missing a template for this request format and variant. request.formats: ["text/html"] request.variant: []
This is the link that request the new form from view/article/show
<%= link_to 'New Paragraph', new_article_paragraph_path(#article), remote: true, class: 'uk-button uk-button-primary' %>
view/paragraph/_form
<div class="article-form-container">
<%= form_with scope: :paragraph, url: article_paragraphs, remote: true do |f| %>
<%= f.text_field :title, class: 'uk-input', placeholder: 'Title of paragraph (optional, can be a subtitle of the article)' %>
<%= f.text_area :text, class: 'uk-textarea', placeholder: 'Content of paragraph' %>
<%= f.hidden_field :position, :value => 3 %>
<div class="submit-button">
<%= f.submit class: 'uk-button uk-button-primary' %>
</div>
<% end %>
</div>
routes
resources :articles, only: %i[show update destroy create]
resources :articles do
resources :paragraphs, only: %i[new create update destroy]
end
view/paragraphs/new.js.erb
$('div#article-control-panel').hide("fast", function () {
$('div#article-control-panel').after('<%= j render 'form' %>')
})
controllers/paragraphs_controller
class ParagraphsController < ApplicationController
def new
#paragraph = Paragraph.new
end
def create
#paragraph = Paragraph.new(paragraph_params)
#article = Article.find(params[:article_id])
if #article.user == current_user
#paragraph.article = #article
#paragraph.save
end
respond_to do |format|
format.html { redirect_to #article }
format.js
end
end
def paragraph_params
params.require(:paragraph).permit(:title, :text, :position)
end
end
Can't figure out what the problem is. The error happens in the article page, after I press the link button.
Edit
Strange thing is that if i try to change the url of orm in something like article_path it will work...
Your controller is missing a respond_to. Your new function should look like this:
def new
#paragraph = Paragraph.new
respond_to { |format| format.js }
end
This respond_to allows rails to call the relevant .js.erb file, in this instance your new.js.erb file.
Just keep in mind that when you want to perform an ajax call, you require these few elements:
A respond_to { |format| format.js } in your controller action
Your js.erb file needs to be the same name as your controller action (foo.js.erb)
A partial to render through your js.erb file, typically named the same as your js file. (_foo.js.erb)
If it is a link, you need remote: true. If it is a form and you're using rails 5, you could use form_with or simply include remote: true too.
my route.rb
post 'home/create'
get 'home/create'
my HomeController
def create
#review_n = Review.create(review_params)
if #review_n.errors.empty?
respond_to do |format|
format.js { render 'create', locals: {review_name: #review_n.review_n, review_body: #review_n.review_body} }
end
else
render 'index'
end
end
my create.js.erb
$(function() {
$(".wrap-body").append("<div> tmp </div>");
});
rails say: ActionController::UnknownFormat in HomeController#create
I want send data in my html.erb without reload page. Help me, please!
UPD:
my html.rb
<%= form_tag home_create_path, :method => 'post', :remote => true do %>
<%= text_area_tag 'review[review_body]', nil %>
<%= text_field_tag 'review[review_name]', nil %>
<%= submit_tag 'send' %>
<% end %>
Is your code hitting the render 'index' call that is outside of the respond_to block?
Normally you would put all render calls inside the respond_to block, so it's obvious that all paths of your logic can respond to all expected formats:
def create
#review_n = Review.create(review_params)
respond_to do |format|
if #review_n.errors.empty?
format.js { render 'create', locals: {review_name: #review_n.review_n, review_body: #review_n.review_body} }
else
format.js { render 'index' }
end
end
end
This requires having both a create.js.erb and an index.js.erb (for the error case).
Also, as #sahil recommended, your routes.rb should not declare get 'home/create' - this action modifies data, so it isn't safe to make it accessible via GET.
I'm having trouble passing locals to a partial shared by three different views, each related to different actions in different controllers. The partial and the locals passed to it work without a problem when working with html requests, but I cannot get them to work when issuing xhr requests.
Let me show you my code to explain myself better.
So, I have this partial
# app/views/shared/_vote_form.html.erb
<div id="vote_form">
<% if post.votes.find_by(user_id: current_user.id).nil? %>
<%= render partial: "votes/vote", locals: { postv: post,
vote: post.votes.build } %>
<% else %>
<%= render partial: "votes/unvote", locals: { postu: post,
vote: post.votes.find_by(user_id: current_user.id) } %>
<% end %>
</div>
As you can see, this partial renders one of two partials depending on the outcome of an if statement:
# app/views/votes/_vote.html.erb
<%= form_for([postv, vote], remote: true) do |f| %>
<%= hidden_field_tag 'vote[vote]', 1 %>
<%= f.submit "Vote", class: "btn" %>
<% end %>
# app/views/votes/_unvote.html.erb
<%= form_for([postu, vote], html: { method: :delete }, remote: true) do |f| %>
<%= f.submit "Unvote", class: "btn btn-primary" %>
<% end %>
As I mentioned, this partials are shared by three different views associated to different actions in different controllers.
# app/views/posts/show.html.erb
<div class="post-vote-form">
<%= render partial: "shared/vote_form", locals: { post: #post } %>
</div>
Which is associated to the following action in the following controller:
class PostsController < ApplicationController
def show
#post = Post.find(params[:id])
end
end
Another view
# app/views/users/feed.html.erb
<% #feed_items.each do |f| %>
<div class="vote-button">
<%= render partial: "shared/vote_form", locals: { post: f } %>
</div>
<% end %>
Associated to the following controller#action
class UsersController < ApplicationController
def feed
#user = User.find_by(id: current_user.id)
#feed_items = #user.feed
end
end
And finally
# app/views/categories/other.html.erb
<% #gal_items.each do |f| %>
...
<%= render partial: "shared/vote_form", locals: { post: f } %>
<% end %>
Associated to controller#action
class CategoriesController < ApplicationController
def other
#other = Category.find(7)
#gal_items = #other.posts
end
end
As you can see, the forms send an xhr request to create/destroy an instance of Vote (I have routes for Vote nested in Post. That's why the form_for takes two arguments).
These requests are handled by the following actions in the VotesController
class VotesController < ApplicationController
def create
#post = Post.find_by(id: params[:post_id])
#vote = #post.votes.build(vote_params)
#vote.user_id = current_user.id
#vote.save
respond_to do |format|
format.html { redirect_to #post }
format.js
end
end
def destroy
#vote.destroy
respond_to do |format|
format.html { redirect_to #post }
format.js
end
end
end
And these two js.erb files come into play:
# app/views/votes/create.js.erb
$("#vote_form").html("<%= escape_javascript(render :partial => 'votes/unvote', locals: { postu: #post,
vote: #post.votes.find_by(user_id: current_user.id)}) %>");
And
# app/views/votes/destroy.js.erb
$("#vote_form").html("<%= escape_javascript(render :partial => 'votes/vote', locals: { postv: #post.each,
vote: #post.votes.build }) %>");
The way I am presenting these last two js.erb files work for the view # app/views/posts/show.html.erb as the values for the locals are taken directly from the VotesController actions, but I have not been able to find a way to make it work for the other two views (which are #something.each do |f|) that render these partials, as I cannot pass the appropriate values to the locals for the form_for arguments to work.
I have tried with a helper to pass values to the locals depending on the url, but without success.
It seems obvious that I cannot get these js.erb files to render the partials with appropriate values for the locals because I cannot retrieve the variables from their respective controllers.
So, bottomline, is there a way to make it work through these js.erb files, or will I have to sort this out using pure JQuery?
Has anyone faced something like this?
I am sorry that I cannot make a question that requires a more specific answer.
Hope you guys can help.
Did you try this?
class UsersController < ApplicationController
def feed
#post = Post.find(params[:id])
#user = User.find_by(id: current_user.id)
#feed_items = #user.feed
end
end
class CategoriesController < ApplicationController
def other
#post = Post.find(params[:id])
#other = Category.find(7)
#gal_items = #other.posts
end
end
I have OrdersController show action (with order_info partial), which displays current status of the order ("paid", "canceled", etc.).
meanwhile, I have callback action order_callback, which executes update action and changes status of the order in the database when it receives the callback from a payment processor.
What I want to achieve is to update show action in real-time to capture changes in order status (e.g. order paid successfully).
I tried to use unobtrusive javascript, but did not succeed.
update.js.erb
$("#order").html("<%= escape_javascript(render 'order_info') %>")
show.html.erb
<div id="order">
<%= render 'order_info' %>
</div>
orders_controller.rb
def update
if #order.update_attributes(order_params)
flash[:success] = "Order updated."
redirect_to #order
else
render 'edit'
end
end
api/orders_controller.rb
def order_callback
signature = request.headers['X-Signature']
request_uri = URI(env['REQUEST_URI']).request_uri rescue env['REQUEST_URI']
if $processor.callback_valid?(signature, request_uri)
#order = Order.find(params["id"])
#order.update_attributes(status: params["status"])
render status: :ok,
json: { success: true,
info: "Successfully updated order." }
else
render status: :unprocessable_entity,
json: { success: false }
end
end
I am using rails 4.2.2 with turbolinks enabled.
I was able to resolve it with javascript polling. The critical line was to explicitly say which .js partial to render in respond_to block
show.js.erb
$("#order").html("<%= j render 'orders/order_info', locals: {order: #order} %>");
OrderPoller.poll();
orders_controller.rb
def show
#order = Order.find(params[:id])
respond_to do |format|
format.js { render "orders/show.js.erb" }
format.html
end
end
orders.coffee
#OrderPoller =
poll: ->
setInterval #request, 5000
request: ->
$.get($('#order').data('url'))
jQuery ->
if $('#order').length > 0
OrderPoller.poll()
show.html.erb
<%= content_tag :div, id: "order", data: { url: order_path(#order) } do %>
<%= render 'order_info' %>
<% end %>
So I'm trying to update my comments section with AJAX without the full page refresh for a college project. However I can't seem to get this working.
In the console it gives me s
Failed to load resource: the server responded with a status of 500 (Internal Server Error)
My show.html.erb file:
<h1>Title: <%= #post.title %></h1>
<h2>Body: <%= #post.body %></h2>
<hr />
<h1>Your comments</h1>
<%= link_to "View comments", "#", id: "comments-link" %>
<ol id="comments">
<%= render 'comments' %>
<hr />
<h1>Create comment</h1>
<%= form_for(#comment, :html => {class: "form", role: "forms"}, :url => post_comments_path(#post), remote: true) do |comm| %>
<div class="container">
<div class="input-group input-group-md">
<%= comm.label :body %>
<%= comm.text_area :body, class: "form-control", placeholder: "Enter a comment" %>
</div>
<%= comm.submit "custom", id: "button" %>
</div>
<% end %>
</ol>
My comments.coffee:
$(document).on "page:change", ->
$('#comments-link').click ->
$('#comments').fadeToggle()
$('#comments_body').focus()
My create.js.erb:
$('#comments').append("<%= j render #comment %>");
and my Comments controller:
class CommentsController < ApplicationController
def index
end
def new
end
def new
#comment = Comment.new
end
def create
#comment = Comment.new(comment_params)
#comment.post_id = params[:post_id]
if #comment.save
flash[:success] = "Successfully created comment"
respond_to do |format|
format.html { redirect_to post_path(#comment.post_id) }
format.js
end
else
flash[:danger] = "Failed to create comment"
redirect_to root_path
end
end
private
def comment_params
params.require(:comment).permit(:body)
end
end
I may have missed some files so just let me know, it is basic as it's just a post and comment system - no styling needed for the project, so yeah. I have been trying this for the last 4 hours and other places just don't work. I've looked on here, Youtube - everywhere however no one else's code works for me so I have come here! Thank's for you're help.
EDIT:
I noticed it said to create a view in the error response, however I made that view and rendered the comment's body onto the create.html.erb however I just need to display the form now.
I notice you are posting to the url post_comments_path(#post). For nested routes, it might be cleaner to do the following:
1) Post to the nested route directly:
<%= form_for([#post, #comment], html: {class: "form", role: "forms"}, remote: true) do |comm| %>
2) Make sure your routes are nested properly, in routes.rb:
resources :posts do
resources :comments
end
3) Refactor your CommentsController, to build through the #post instance:
class CommentsController < ApplicationController
before_action :get_post
def index
#comments = #post.comments
end
def new
#comment = #post.comments.build
end
def create
#comment = #post.comments.build(comment_params)
if #comment.save
flash[:success] = "Successfully created comment"
respond_to do |format|
format.html { redirect_to post_path(#post) }
format.js
end
else
respond_to do |format|
format.html { render :new }
format.js { render :error }
end
end
end
private
def comment_params
params.require(:comment).permit(:body)
end
def get_post
#post = Post.find(params[:post_id])
end
end
4) Render the validation errors in app/views/comments/error.js.erb. I'll let you decide how best to do that, but here's a quick dump to the console:
<% #comment.errors.full_messages.each do |message| %>
console.log("<%= message %>");
<% end %>
This file is not to be confused with your app/views/comments/create.js.erb which is handling successful save of the comment. That should look something like this:
$('#comments').append("<%= j render #comment %>");
$(".form")[0].reset();
5) Tweak your view a little bit. I notice you need to output the comments differently:
<ol id="comments">
<%= render #post.comments %>
</ol>
which should correspond to a partial in app/views/comments/_comment.html.erb so make sure this is there.