I am facing a strange issue.
I have Post has_many attachments. as: :imageable
and
Attachment belongs_to imageable, polymorphic: true
I am trying to upload multiple images attached to a single post using dropzone.js
However, whenever I upload multiple files in the dropzone-powered form, each image gets uploaded as its own post. I upload 4 images, I get 4 posts with each of the attached image.
How can I get all of the images I attach to a post to be associated with that post only?
Here is what the posts.js looks like:
$(document).ready(function(){
// disable auto discover
Dropzone.autoDiscover = false;
// grap our upload form by its id
$("#new_post").dropzone({
// restrict image size to a maximum 1MB
maxFilesize: 1,
// changed the passed param to one accepted by
// our rails app
paramName: "post[attachments_attributes][][picture]",
// show remove links on each image upload
addRemoveLinks: true
});
});
Create action from the PostsController
def create
#post = Post.create(post_params)
if #post.save
render json: { message: "success" }, :status => 200
else
# you need to send an error header, otherwise Dropzone
# will not interpret the response as an error:
render json: { error: #post.errors.full_messages.join(',')}, :status => 400
end
end
Relevant section of the _form.html.erb for the new Post action:
<%= form_for(#post, html: {class:"dropzone"}) do |f| %>
....
<div class="fallback">
<%= f.label :attachments %>
<%= f.fields_for :attachments do |at| %>
<%= at.file_field :picture %>
<% end %>
</div>
....
<% end %>
The param name is post[attachment_attributes][0][picture] as it appears in the form HTML.
I suspect that this is the cause for the issue, but how do I change it so that the request uploads all the images attached to one post?
Thanks in advance!
Dropzone Issue It looks like this is an issue that is untested but you can use the development branch of Dropzone to access it. This link has the details.
Related
I want to implement autocomplete via rails4-autocomplete
Rails 4.2.4
Here is the controller
app/controllers/samples_controller.rb
class SamplesController < ApplicationController
autocomplete :patient, :code
Here is the route file,
config/routes.rb
resources :samples do
get :autocomplete_patient_code, on: :collection
end
And that's the view
app/views/samples/_form.html.erb
<div class="field">
<%= f.label :patient_code %><br>
<%= f.autocomplete_field :patient_id, autocomplete_patient_code_samples_path %>
</div>
With this code I mange to get the autocomplete
However I get invalid foregin key error when try to save the sample that's because the patient's code is passed to the foregin key instead of ID. How do I fix this?
Here is the request Parameters:
{"utf8"=>"✓",
"authenticity_token"=>"blabla",
"sample"=>{"patient_id"=>"A123",
"commit"=>"Create Sample"}
Get "/samples/autocomplete_patient_code?term=A12" returns
{"id":"15","label":"A123","value":"A123"}]
After reading the GitHub documentation of rails4-autocomplete, I devised the following solution:
Add attr_accessor :patient_name to your Sample model and modify the form as follows:
...
<%= f.autocomplete_field :patient_name, autocomplete_patient_code_samples_path, id_element: '#patient_id' %>
<%= f.hidden_field :patient_id, id: 'patient_id' %>
...
With this change whenever you select any patient name, that patient's ID will be updated on the hidden field and it will be submitted as patient_id.
Hope this solves your problem.
Source: Github
I'm trying to create a dropzone where users can drop multiple files at once. The problem is that it only renders the dropzone when I reload the webpage, and not when I open it for the first time. I mean, when I click to open the view that takes care of the uploads, I just get the browse and upload buttons that you'll see in my code, but when I reload the page I get the dropzone box. I can not see what I missing here. The code I wrote was:
_new.html.erb
<center>
<% #upload = Upload.new %>
<%= form_for #upload , html: { :multipart => true, class: "dropzone"} do |u| %>
<div class="fallback">
<%= u.file_field :file %><br>
<%= u.submit "Upload" %>
</div>
<% end %>
uploads.js.coffee
$(document).ready () ->
Dropzone.autoDiscover = false;
$("#new_upload").dropzone({
maxFilesize: 25,
paramName: "upload[file]",
addRemoveLinks: true
});
uploads_controller.rb
class UploadsController < ApplicationController
def new
#upload = Upload.new
end
def create
#upload = Upload.create(upload_params)
if #upload.save
render json: { message: "success" }, :status => 200
else
render json: { error: #upload.errors.full_messages.join(',')}, :status => 400
end
end
def destroy
#upload = Upload.find(params[:id])
if #upload.destroy
render json: { message: "Archivo eliminado." }
else
render json: { message: #upload.errors.full_messages.join(',') }
end
end
private
def upload_params
user = current_user.id
params.require(:upload).permit(:file,:user)
end
end
You could also notice that in the _new.html.erb file I'm redefining the #upload class variable, that was already defined in the controller. If I remove it the new action won't work. What's the problem there?
Please ask me if you need me to provide more code or details.
Thanks in advanced.
You should add 'data-no-turbolink': true to the link that opens that page. Turbolinks doesn't always play nice with $(document).ready so this will call the link without turbo links.
There is also a gem called jquery-turbolinks that might make the current version work without data-no-turbolink
I'm having a routing issue with an image. In my app I have images of items on the home page. I would like them to link to their image page.
Here is what my items controller looks like:
class ItemsController < ApplicationController
def show
#item = Item.find(params[:id])
end
end
This is what I have in my routes:
Rails.application.routes.draw do
resources :items
end
And this is what I have in the item partial:
<%= link_to(image_tag(item.image.url(:thumb)), item_path(:id)) %>
What I expected after reading the rails routing guide was that this would link to the item page for that image. Here is their example:
photo_path(:id) returns /photos/:id (for instance, photo_path(10) returns /photos/10)
I should also add that this is in my home page controller:
class StaticPagesController < ApplicationController
def home
#items = Item.where.not(category_id: 1)
end
However, that is not working. I've tried several different things, but all produce errors. Is there a simple way to do this?
The normal way to do what you want is this:
<%= link_to item_path(item) do %>
<%= image_tag(item.image.url(:thumb)) %>
<% end %>
You can just pass the instance of the item to item_path and also if you have complicated html for a link, it is usual to put it in a block for the link as shown here (with link_to something do).
In my app I have Issue model, which belongs_to Status model. What I need to do is to have dropdown list of links (or spans, doesn't matter) with Statuses Id's on Issue show page, so I could change status clicking on this (could be non-ajax and ajax).
I am rather new to Rails, so I do not know how to implement this, was thinking of few ways to do this, but non seems to be working.
Because you're new, I'll outline what I'd do for you (hopefully it will help):
#config/routes.rb
resources :issues do
get "change_status/:status_id", to: "issues#change_status"
end
#app/models/status.rb
Class Status < ActiveRecord::Base
has_many :issues
scope :not, ->(id) { where('statuses.id != ?', id) }
end
#app/controllers/issues_controller.rb
def show
#issue = Issue.find params[:id]
#statuses = Status.all.not(#issue.id)
end
def change_status
issue = Issue.find params[:id]
issue.status = params[:status_id]
issue.save if issue.status_id_changed?
redirect_to issue
end
#app/views/issues/show.html.erb
<%= #statuses.each do |status| %>
<%= link_to status.title, issue_change_status_path(#issue, status) %>
<% end %>
There's obviously some stuff to explain - if you need me to do that, let me know and I'll give you the details!
You can simply use the link_to rails helper like in the following code:
link_to "Change Status", my_path_to_update_status, remote: true, method: :put
This will send an AJAX PUT request (thank to the remote: true) to your my_path_to_update_status.
Then, you just have to update the status in the action corresponding to the path specified in the link_to helper tag.
More information about the link_to rails helper here
I'm trying to access my page gallery/new via a link, so i have created this
<%= link_to 'New gallery' new_gallery_path %>
rake routes gives
gallery_index_path GET /gallery(.:format) gallery#index
POST /gallery(.:format) gallery#create
new_gallery_path GET /gallery/new(.:format) gallery#new
edit_gallery_path GET /gallery/:id/edit(.:format) gallery#edit
gallery_path GET /gallery/:id(.:format) gallery#show
PATCH /gallery/:id(.:format) gallery#update
PUT /gallery/:id(.:format) gallery#update
DELETE /gallery/:id(.:format) gallery#destroy
and within my routes i have
resources :gallery
My view at gallery/new is
<%= nested_form_for #gallery, :html => { :multipart => true} do |f| %>
--content here
<% end %>
whenever i click the link to view this page i get
undefined method `galleries_path
Can someone point out my mistake, please?
You've chosen the wrong name for your resources. It should always be pluralized:
resources :galleries
From this Rails will generate the plural and singular paths correctly. galleries_path for the index, gallery_path for show, etc etc.