I'm trying to call a classed coffeescript/javascript function from my Rails 4 view code. It's telling me that the class variable that was created on page load and used in document.ready doesn't exist anymore.
coffeescript:
class App
reload_calendar: ->
source = new Array
viewable_calendars = $('input:checkbox:checked.visable_calendars').map(->
#value
).get().join(',')
calendar_url = '/events.json'
new_event_link = '#{new_event_path}'
$('#calendar').fullCalendar
dayClick: (date, allDay, jsEvent, view) ->
document.location.href = new_event_link + '?start_date=' + date
return
header:
left: 'prev,today,next'
center: 'title'
right: 'month,agendaWeek,agendaDay'
selectable: true
selectHelper: true
editable: false
ignoreTimezone: false
select: #select
eventClick: #eventClick
eventDrop: #eventDropOrResize
eventSources: [ {
url: calendar_url
data:
custom_param1: 'something'
custom_param2: 'somethingelse'
error: ->
alert 'there was an error while fetching events!'
return
} ]
eventResize: #eventDropOrResize
timeFormat: 'h:mmtt{ - h:mmtt} '
return
app = new App
$(document).ready ->
app.reload_calendar()
$('#calendar-color').minicolors()
partial:
<ul>
<% #calendars.each do |c| %>
<li>
<span style="background-color: <%= c.color %>;">
<%= check_box_tag 'show_calendar_'+c.id.to_s, value=c.id.to_s, checked=true, :onchange => "app.reload_calendar()", :class => "visible_calendars" %>
</span>
<%= c.name %>
<%= link_to 'x', calendar_path(c), :confirm => "Are you sure you want to remove the calendar?", :method => :delete %></li>
<% end %>
This loads the calendar fine (using app.reload_calendar at the end of the coffeescript), but fails with the error Uncaught ReferenceError: app is not defined when it's triggered by clicking or unclicking a check_box.
Just use this pattern for each coffescript class
class MyClass
...
root = exports ? window
root.MyClass = MyClass
Some other ways to make your class public here, and here
window.app = new App works, as Long Dương posted in the comments.
Related
I followed this tutorial to implement drag and drop. https://www.driftingruby.com/episodes/drag-and-drop-with-hotwire
I am getting an error on drop that says Uncaught (in promise) TypeError: Cannot read properties of undefined (reading 'dataset'). Any thoughts on why this is happening?
Project model:
acts_as_list scope: :project
_project.html.erb
<div id="projects" data-controller="position">
<%= content_tag :div, data: { sgid: project.to_sgid_param, id: "#{dom_id project}" }, class: 'table-row' do %> <div><%= project.name %> </div>
<div><%= project.description %> </div>
<div><%= project.status %> </div>
<div><%= project.user.email %> </div>
<div class="flex justify-end">
<%= link_to "View", project_path(project) , data: {turbo: false} %>
<%= button_to "Delete", project, method: :delete, form: {data: {turbo_confirm: "Are you sure?"}} %> </div>
</div>
<% end %>
</div>
position_controller.js
import { Controller } from "#hotwired/stimulus";
import Sortable from "sortablejs"
import { put, get, post, patch, destroy } from "#rails/request.js"
export default class extends Controller {
connect() {
this.sortable = Sortable.create(this.element, {
animation: 150,
onEnd: this.updatePosition.bind(this)
})
}
async updatePosition(event) {
const response = await put('/projects', {
body: JSON.stringify({
sgid: event.project.dataset.sgid,
position: event.newIndex + 1
})
})
if (response.ok) {
console.log(event.project.dataset.sgid)
}
}
}
well event doesn't have a method project. You may have meant event.target. Anyway it looks as if the target of the event is probably the #projects element (but you need to check this in dev tools and see where the event is being captured).
Let's suppose that the event is being captured by the #projects element, well that element has an empty dataList. So wherever the capture is occurring, you need to put data: {sgid: project.to_sgid_param} on that element.
Finally, you should be able to populate the ajax request with the value sgid: event.target.dataset.sgid.
Got a partial view successfully interacting with my coffee script. Collection_Select change triggers script & resulting value is correct, Controller does hit def new successfully.
Only question remaining is how to access the results of the coffee script in the controller.
Partial View:
<% #modName = locals[:moduleName] %>
<% #id = locals[:id] %>
<%= form_with url: admin_command_path() do |f| %>
<%= collection_select(:refcode, :Code, Command.where(FLD: #modName), :Code, :Definition, options ={prompt: true}) %>
<br /><br />
<button class="btn_new">
<%= link_to "Execute", new_admin_command_path(mod: #modName, id: #id) %>
</button>
<% end %>
Coffee Script:
get_SubModule = ->
$('#refcode_Code').change (e) ->
com_value = $('#refcode_Code').val()
console.log 'COFFEEE IS LIFE', com_value
str = $('#refcode_Code :selected').text()
data: {sub_mod_str: com_value}
return
return
So now what.
ActiveAdmin.register Command do
def new
[need to access sub_mod_str here however possible]
end
I think when you Change value you need call Ajax and request controller
get_SubModule = ->
$('#refcode_Code').change (e) ->
com_value = $('#refcode_Code').val()
console.log 'COFFEEE IS LIFE', com_value
str = $('#refcode_Code :selected').text()
data: {sub_mod_str: com_value}
$.ajax(
type: 'POST'
url: your_url
data: data
dataType: 'json'
success: (data) =>
console.log(data)
error: (er) =>
console.log(er)
)
return
return
Controller
def new
byebug // check params
end
I'm working on a Rails 6 app, and want to update page view based on a dropdown value selected using XHR. Dropdown must use GET method coz I am calling index action.
I am using form_with which by default uses remote: true.
I am not using local: true.
I tried onchange: "Rails.fire(this.form, 'submit')" - this does send XHR request and receives a response but does not update view.
I tried onchange: "this.form.submit();" - this does a full page reload not utilizing XHR.
Code from app/views/users/index.html.erb
<%= form_with url: station_users_path(station_id: Current.user.home_station), method: :get do |form| %>
<%= form.select :user_status, options_for_select( { "Active users" => "unlocked", "Inactive users" => "locked"}, #user_status ), {}, { :onchange => "Rails.fire(this.form, 'submit')" } %>
<% end %>
Code from app/controllers/users_controller.rb
def index
#user_status = params[:user_status] || "unlocked"
#users = #station.users.send(#user_status) || []
#user_status == "unlocked" ? seperate_managers_from_users : #managers = []
end
In onchange just write one get_station_users() function. Inside that you can use ajax calling.
In forms
<%= form_with url: station_users_path(station_id: Current.user.home_station), id: “form_id”, method: :get do |form| %>
<%= form.select :user_status, options_for_select( { "Active users" => "unlocked", "Inactive users" => "locked"}, #user_status ), {}, { :onchange => "get_station_users()" } %>
<% end %>
Add Script
function get_station_users(){
$.ajax({
type: "GET",
url: "/station_users",
data: { $('#form_id').serialize(), },
dataType: 'script'
});
}
Your response will be as JS. So you can use index.js.erb
I'm new at RoR and I'm having a trouble in my app. The problem consists on filter a select field named "Solution", based on the others select fields above it.
Now, what the app do is to retrieve all information from BD about Area, Region, Associated, Solution and populate the select fields with these data. But the user wants that, when an area, a region and an associated is selected by the user, only the solutions about that associated in that region on that area should be shown.
Edit:
I'm almost there! I've made many changes in my app. The select fields are populated by controller action new and the function "populate_selects", which is called by the parameter before_action :popula_selects, only: [:new, :edit]. A new function was created in order to be called by AJAX and upgrade the "Solution" field:
Atendments_Controller < ApplicationController
before_action :populate_selects, only: [:new, :edit]
def new
#atend = atendment.new
end
def update_solution #AJAX
#solutions = atendment.joins(:solution).where("atendment_area_id = ? and atendment_region_id = ? and atendment_assoc_id = ?", params[:atendment_area_id], params[:atendment_region_id], params[:atendment_assoc_id])
respond_to do |format|
format.js
end
end
private
def populate_selects
#atendment_area = atendmentArea.where(status: true, user_id: current_user.id)
#atendment_region = atendmentRegion.where(status: true, user_id: current_user.id)
#atendment_assoc = atendmentRegionAssoc.where(status: true, assoc_id: current_user.entidade_id).where(atendment_region_id: #atendment_region.map(&:atendment_region_id))
#solutions = atendment.joins(:solution).where("atendment_area_id = ? and atendment_region_id = ? and atendment_assoc_id = ?", params[:atendment_area_id], params[:atendment_region_id], params[:atendment_region_assoc_id])
end
end
Below, the _form.html.erb code from view:
<div class="atendment-form">
<%= form_for :atendment, url: {action: "new"}, html: {method: "get"} do |f| %>
<div class="col-xs-6">
<%= f.select :atendment_area_id, options_for_select(#atendment_area.collect { |c| [ c.atendment_area.name, c.id ] }, 1), {:prompt=>"Área"}, { :class => 'form-control', :required => true, id: 'atendment_atendment_area_id' } %>
</div>
<div class="col-xs-6">
<%= f.select :atendment_region_id, options_for_select(#atendment_region.collect { |c| [ c.atendment_region.name, c.id ] }, 1), {:prompt=>"Região"}, { :class => 'form-control', :required => true, id: 'atendment_atendment_region_id' } %>
</div>
</div>
</div>
<div class="field">
<%= f.select :atendment_assoc_id, options_for_select(#atendment_assoc.collect { |c| [ c.atendment_region.name, c.id ] }, 1), {:prompt=>"Associado"}, { :class => 'form-control', :required => true, id: 'atendment_atendment_assoc_id' } %>
</div>
<div class="field">
<%= f.select :solution_id, options_for_select(#solutions.collect { |solution| [solution.name, solution.id] }, 0), {:prompt=>"Solução"}, { :class => 'form-control', :required => true, id: 'atendment_solution_id' } %>
</div>
</div>
Route to the new function:
resources :atendments do
collection do
get :update_solution
end
end
AJAX function which calls the "update_solution" and reset solution field's value (app/assets/javascript/atendment.js.coffee):
show_solutions = ->
$.ajax 'update_solution',
type: 'GET'
dataType: 'script'
data: {
atendment_area_id: $("#atendment_atendment_area_id").val()
atendment_region_id: $("#atendment_atendment_region_id").val()
atendment_assoc_id: $("#atendment_atendment_assoc_id").val()
}
error: (jqXHR, textStatus, errorThrown) ->
console.log("AJAX Error: #{textStatus}")
success: (data, textStatus, jqXHR) ->
console.log("OK!")
$(document).ready ->
$('#atendment_atendment_assoc_id').on 'change', ->
show_solutions()
So, I've created a .coffee file to render the partial that will return a new value to the "solution" field "option" tag
(app/views/atendment/update_solution.coffee):
$("#atendment_solution_id").empty()
.append("<%= escape_javascript(render :partial => 'solution') %>")
And, the last but not least, the partial containing the html code for the "option" tag mentioned above (app/views/atendments/_solution.html.erb):
<option value="<%= solution.id %>" selected="selected"><%= solution.nome %></option>
For any reason, the AJAX function doesn't print nothing on console (nor error neither success), but it calls the update_solution.coffee file. The point is, it doesn't update the option value due an error (500 internal server error). I don't know what am I doing wrong. If anybody could help me, I appreciate it.
I would do this with JS, can think any other way.
A function called by onchange that change the display attribute from each field that you need to hide or show.
I solved this with the following code:
assets/js/atendments.js
I changed the code because the last one had many bugs.
function getAssociated(){
var aau_id = $("#atendment_area_user_id").val()
var aru_id = $("#atendment_region_user_id").val();
$.getJSON("/controllers/atendments_controller/getAssociated/"+aru_id,
function ( callback ) {
if (callback != "error"){
var assoc = document.getElementById("atendment_region_associated_id");
while (assoc.firstChild) {
assoc.removeChild(assoc.firstChild);
}
var i = Object.keys(callback).length -1;
$("#atendment_region_associated_id").append("<option value=''>Associated</option>");
while (i >= 0) {
$("#atendment_region_associated_id").append("<option value='"+callback[Object.keys(callback)[i]]+"'>"+Object.keys(callback)[i]+"</option>");
i--;
}
}
});
get_solution_type();
}
function get_solution_type() {
var ara_id = $("#atendment_region_associated_id").val();
$.getJSON("/controllers/atendments_controller/getSolution/"+ara_id,
function ( callback ) {
if (callback != "error"){
var sol = document.getElementById("atendment_solution_id");
while (sol.firstChild) {
sol.removeChild(sol.firstChild);
}
var i = Object.keys(callback).length-1;
while (i >= 0) {
$("#atendment_solution_id").append("<option value='"+callback[Object.keys(callback)[i]]+"'>"+Object.keys(callback)[i]+"</option>");
i--;
}
}
});
var aau_id = $("#atendment_area_user_id").val();
$.getJSON("/controllers/atendments_controller/getType/"+aau_id,
function ( callback ) {
if (callback != "erro"){
var type = document.getElementById("atendment_type_id");
while (type.firstChild) {
type.removeChild(type.firstChild);
}
var i = 0;
while (i < (Object.keys(callback).length)) {
$("#atendment_type_id").append("<option value='"+callback[Object.keys(callback)[i]]+"'>"+Object.keys(callback)[i]+"</option>");
i++;
}
}
});
}
The $.getJSON performs ajax request to the controller that responds with JSON and update the select fields option tags.
controllers/atendments_controller
I just retrieve the data from DB and return as JSON
def getAssociated
aru_id = params[:atendment_region_user_id]
aras = AtendmentRegionAssociated.where("SQL here")
if aras.present?
render :json => aras.to_json
else
render :json => "error".to_json
end
end
def getSolution
ara_id = params[:atendment_region_associated_id]
sol = Solution.where("SQL here")
if sol.present?
render :json => sol.to_json
else
render :json => "error".to_json
end
end
def getType
aau_id = params[:atendment_area_user_id]
type = AtendmentType.where("SQL here")
if type.present?
render :json => type.to_json
else
render :json => "error".to_json
end
end
Update the routes and put the javascript functions in select fields onchange property. Now everything is working fine :D
Think of the below as a bike rental. Someone fills out a form and gets a bike assigned to them which they can rent and borrow for a certain amount of time.
The problem I am having is I am trying to show the person who wants to rent the bikes what bikes are available before they submit the form. Below is my attempt using ajax. I have no errors but also my select is not updating.
request controller methods below
def new
#bikes = Bike.available_based_on_request_date(params[:Borrow_date], params[:Return_date])
#new_request = Request.new
end
create method below (with a temporary workaround, that reloads the form with a warning about availability.)
def create
#request = Request.new(request_params)
available_bikes = #request.new_request(current_user.id)
if (available_bikes >= #request.number_of_bikes_wanted) && #request.save
redirect_to root_path
else
flash[:warning] = "You have requested more bikes than available. There are only #{available_bikes} bikes available"
redirect_to new_request_url
end
end
params in request controller
def request_params
params.require(:request).permit(:Borrow_time, :Borrow_date,
:Return_date, :Return_time,
:number_of_bikes_wanted, bike_ids: [])
end
new.html.erb view
<div class="form" align = "center">
<%= render 'form.js.erb' %>
</div>
_form.js.erb below
<script type="text/javascript">
$(document).ready(function() {
$('.my-date').on('change', function() {
var data = {}
$('.my-date').each(function() {
if($(this).val()) {
data[$(this).attr("id")] = $(this).val();
}
});
if(Object.keys(data).length > 1) {
$.ajax({
type: "POST",
url: <%= new_request_path %>,
data: data
});
}
});
});
var options = "";
<% #bikes.each do |bike| %>
options += "<option value='<%= bike.id %>'><%= bike.name %></option>"
<% end %>
$('#request_number_of_bikes_wanted').html(options);
</script>
<div class="block-it" align=center>
<br>
<%= form_for #new_request do |request| %>
<%= request.label :Borrow_date, 'Borrow on' %>
<%= request.date_field :Borrow_date, id: 'Borrow_date', class: 'my-date', min: Date.today, :required => true %>
<%= request.label :Borrow_time, 'Borrow at' %>
<%= request.time_field :Borrow_time, value: '10:00', min: '9:00 AM', max: '4:30 PM', default: '10:00 AM', :ignore_date => true, :required => true %>
<br><br>
<%= request.label :Return_date, 'Return On' %>
<%= request.date_field :Return_date, id: 'Return_date', class: 'my-date', min: Date.today, :required => true %>
<%= request.label :Return_time, 'Return at' %>
<%= request.time_field :Return_time, value: '10:00', min: '9:00 AM', max: '4:30 PM', default: '10:00 AM', :ignore_date => true, :required => true %>
<br><br>
<br><br>
<%= request.label :NumberOfBikesWanted, 'Number of bikes' %>
<%= request.select :number_of_bikes_wanted, %w(select_bike), :required => true %>
<br>
<%= request.submit 'Submit' %>
<%= request.submit 'Reset', :type => 'reset' %>
<% end %>
<br>
</div>
There are a two main problems with your code:
Controller
Use a different action to set the endpoint that you will call with ajax, so instead of this:
def new
#bikes = Bike.available_based_on_request_date(params[:Borrow_date], params[:Return_date])
#new_request = Request.new
end
Try this:
def bikes
#bikes = Bike.available_based_on_request_date(params[:Borrow_date], params[:Return_date])
def new
#new_request = Request.new
end
If you want to keep REST routes, then create a new controller and use the index action within that controller.
Form
This code:
var options = "";
<% #bikes.each do |bike| %>
options += "<option value='<%= bike.id %>'><%= bike.name %></option>"
<% end %>
$('#request_number_of_bikes_wanted').html(options);
doesn't belong here, it must be deleted from your file and instead put it on a new file called bikes.js.erb; also rename your form to _form.html.erb.
And update your ajax call to use your new route:
$.ajax({
type: "POST",
url: <%= bikes_path %>,
data: data
});
What you want to setup is a new endpoint but instead of returning html, it will return a js. But you must treat it as an independent action, just as any other action in rails. The only difference is how you call that action (ajax) and how you respond to it (js).