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
<%= f.submit "#{t('next_text')}", :class => "submit_button" ,:confirm=>'Edit all copies?'%>
how can I take value(true or false) of :confirm in rails 2.3.5?
I need this value to do some action in controller .
The easiest solution would be to just add a checkbox to your form whether or not to edit all copies.
If you really need the confirmation box on submit, attach an onSubmit handler to the form
<% form_for(#some_model, :html=> {:class => 'edit_confirmation'}) do |f| %>
<%= hidden_field_tag :edit_all, 0 %>
....
<% end %>
The javascript using jQuery:
$('form.edit_confirmation').on('submit', function(e) {
// the hidden field
var field = $('input#edit_all');
if(confirm("Edit all copies?")) {
field.val(1);
} else {
field.val(0);
}
return true;
});
In your controller you can get the result with params[:edit_all]
I'm using simple_form with AngularJS:
= simple_form #post do |f|
= f.input :title, input_html: { "ng-model" => "title" }
It works great for my scenario on new post, but for editing on existing post, it doesn't bind/fill in existing value from post's title on form. From what I thought Rails already fill in the value, but AngularJS wipes it out after the page load because $scope.title is blank.
I found the trick is to actually create a controller with an init function that takes the value you want. In my case I just created a app/assets/javascripts/angular_app.js file that looks like this:
//= require_self
AngularRails = angular.module('AngularRails', []);
AngularRails.controller('PostFormCtrl', function($scope) {
$scope.init = function(title) {
$scope.title = title;
}
});
You'll have to translate the view into haml but it should look something like this:
<div ng-app="AngularRails">
<div ng-controller="PostFormCtrl" ng-init="init('<%= #post.title %>')">
<%= form_for #post, html: {name: "postForm", "novalidate" => true} do |f| %>
<%= f.text_field :title, "ng-model" => "title", required: true %>
<%= f.submit "ng-disabled" => "postForm.$invalid" %>
<% end %>
</div>
</div>
Remember to include the angular_app file into application.js and it should world. Obviously, this isn't a very robust solution but you could use active model serializer to convert the rails object to a json object. Then, pass that json object to the init function and in the controller, iterate over the key/value pairs of that json object and set them to $scope. Something like this:
AngularRails.controller('PostFormCtrl', function($scope) {
$scope.init = function(input) {
Object.keys(input).forEach(function(key) {
$scope[key] = input[key];
});
};
});
Hope that helps!
Im trying to show/add the field 'area_outros_descricao' when the radio button is selected with value 4. What im doing wrong ?
form do |f|
...
...
f.input :tipo_proposta, label: 'Proposta do Projeto', as: :radio, collection: {'Fechada' => 1, 'Pontual'=> 2, 'Emergencial' => 3, 'Outros' => 4}
if f.object.tipo_proposta == 4
f.input :area_outros_descricao, label: 'Descrição'
end
...
...
end
f.actions
You need to use JavaScript:
Here is an example to add Input fields on Radio button selected..
function yesnoCheck() {
if (document.getElementById('yesCheck').checked) {
document.getElementById('ifYes').style.display = 'block';
}
else document.getElementById('ifYes').style.display = 'none';
}
Demo1 :
Another Example
$(document).ready(function () {
$(".text").hide();
$("#r1").click(function () {
$(".text").show();
});
$("#r2").click(function () {
$(".text").hide();
});
});
Demo2:
You have to use jQuery on client side to show or hide the input.
I have the following code in my index.html.erb
<%= select_tag 'team_id', options_for_select(#teams.map{|team| ["#{team.name} #
{team.nick}", team.id] }) %>
Where would I add a link_to helper within that block? Can I even add a link_to for select_tag?
The desired link_to would go to '/Teamleader/ID_OF_OPTION_PICKED'
UPDATE:
To be more clear; when a user selects an option from the select tag, I want to redirect the page to the desired link (from link_to).
<%= select_tag 'team_id', options_from_collection_for_select(#teams, "id", "name") %>
<script>
$(function(){
$('#team_id').bind('change', function () {
var url = "/Teamleader/" + $(this).val()
if (url) {
window.location.replace(url);
}
return false;
});
});
</script>
Try:
<%= select_tag 'team_id', options_from_collection_for_select(#teams, "id", "name"),:onchange => "window.location.replace('/Teamleader/'+this.value);" %>