I need to set session variable on ajax call on rails. I have following ajax code:
$.ajax({
url: '/dashboard/set_session',
type: 'GET',
data: {
site_id: site_id
},
dataType : 'json'
}).done(function(data){
console.log(data);
});
And on rails end:
def set_session
puts params[:site_id]
session[:site_id] = params[:site_id]
puts session[:site_id]
respond_to do |format|
format.json { render json: 'success'}
end
end
The first and second puts print same value. That means the session is set. But when I navigate to other pages or reload the page, the session value of site_id is cleared.
How to fix this issue?
Related
I have an app where a user has a portfolio that has many positions and each position has many movements. So the url for an associated movement index page for a particular position looks like: portfolio_position_movements. I have an index page with and the controller action looks like
def index
#movements = #position.movements.all
respond_to do |format|
format.html
format.json { render json: #movements}
end
end
My ajax call in my movements.js file is this:
var loadData = function(){
$.ajax({
type: 'GET',
contentType: 'application/json; charset=utf-8',
url: ?,
dataType: 'json',
success: function(data){
drawBarPlot(data);
},
failure: function(result){
error();
}
});
};
How can I pass in a dynamic route path so this will work with the movement index on any position object?
You can use erb tags in js files, for me i did it as the following:
#edit.js.erb
$modal = $('.modal'),
$modalBody = $('.modal .modal-body'),
$modalHeading = $('.modal .modal-heading');
$modalHeading.html("Edit <%= #student.full_name.titleize %>'s information");
$modalBody.html("<%= escape_javascript(render 'edit_student') %>");
$modal.modal();
Note: the file extension is .js.erb so rails can process it. I was calling a modal form and the edit method in students_controller.rb was:
def edit
#student = Student.find(params[:id])
respond_to do |format|
format.html # edit.html.erb
format.js # edit.js.erb
format.json { render json: #student }
end
end
Edit:
You can embed the JS code inside html.erb and use rails routes like:
<script>
var loadData = function(){
$.ajax({
type: 'GET',
contentType: 'application/json; charset=utf-8',
url: <%= my_ajax_path %>,
dataType: 'json',
success: function(data){
drawBarPlot(data);
},
failure: function(result){
error();
}
});
};
</script>
What is my_ajax_path?
Is a rails route defined in routes.rb for example i need a list of all available sections that students can apply to using ajax so i did the following:
1- defined a method in students_controllers.rb like this one:
def available_sections
batch_id = (params[:batch_id].nil? || params[:batch_id].empty?) ? 0 : params[:batch_id].to_i
if batch_id == 0
#sections = [].insert(0, "Select Section")
else
batch = Batch.find(params[:batch_id])
# map to name and id for use in our options_for_select
#sections = batch.sections.map{|a| [a.section_name, a.id]}
end
end
2- added a route to it in routes.rb
resources :students do
collection do
get :available_sections
post :create_multiple
end
end
3- Inside new.html.erb:
<script type="text/javascript">
$(document).ready(function() {
$('.student_section_id').hide();
$('#student_batch').change(function() {
$.ajax({
url: "/students/available_sections",
data: {
batch_id : $('#student_batch').val()
},
dataType: "script",
success: function () {
if (+$('#student_batch').val() > 0)
{
$('.student_section_id').fadeIn();
}
else
{
$('.student_section_id').fadeOut();
}
}
});
});
});
</script>
Forget about that messy code :D as it was my first steps but you get the point, and for this line url: "/students/available_sections" it should be using rails routes you can get it by calling rails routes from the command line to get a list of all your application routes
I am using Rails CoffeeScript to call an action in my controller, which is fine, but I can not get the response to work.
I have a form with a list of budget lines. I want to allow the use to add a new line using CoffeeScript so I don't need to reload the question.
I have got the following in CoffeeScript:
$("button[id^='new_budget_line']").on 'click', (event) ->
category_id = $(this).attr('name')
child_economy_id = $('#child_economy_id').val()
$('#form_id').submit ->
valuesToSubmit = $(this).serialize()
$.ajax
type: 'POST'
url: $(this).attr('action')
data: valuesToSubmit
dataType: 'JSON'
$.ajax({
type: 'GET'
url: '../child_economy_lines/create_line'
data:
child_economy_id: child_economy_id
category_id: category_id
cost_type: 'direct'
dataType: JSON
}).done (response) ->
alert "Hey"
$('#test_append').html("Hey you now!!")
And the following in my controller
def create_line
logger.debug "Hejsa fra create line - category id #{params[:category_id]}"
#child_economy_line = #child_economy.child_economy_lines.build(:child_economy_category_id => params[:category_id], :cost_type => params[:cost_type])
if #child_economy_line.save
respond_to do |format|
format.js {render nothing: true}
format.json {render :json => "test"}
end
end
end
The action in the controller i called fine, and the new line is created, but I can not the actions after the ajax call to work. The part from .done ...
Can anybody help me identify where it is going wrong?
I would like to change a Workorder.wostatus_id based on data in html.
In my index html, I have the wostatus.id stored like this:
<span id="woid">4</span>
I would like to update the workorder.wostatus_id = 4
This is in the workorders.js.coffee - but, it's not working:
$.ajax
type: 'POST'
url: 'http://localhost:5000/workorders'
data:
workorder:
wostatus_id: $("#woid").val()
Maybe I'm not getting to the right workorder record?
Even doing this didn't update the workorder.wostatus_id
$.ajax
type: 'POST'
url: "http://localhost:5000/workorders"
data:
workorder:
wostatus_id: '3'
This didn't work either:
$.ajax
type: 'POST'
url: "http://localhost:5000/workorder/17"
data:
wostatus_id: '7'
I'm missing something big time.
Does the ajax POST execute this code in the workorder controller????
# PUT /workorders/1
# PUT /workorders/1.json
def update
#workorder = Workorder.find(params[:id])
respond_to do |format|
if #workorder.update_attributes(params[:workorder])
format.html { redirect_to #workorder, notice: 'Workorder was successfully updated.' }
format.json { head :ok }
else
format.html { render action: "edit" }
format.json { render json: #workorder.errors, status: :unprocessable_entity }
end
end
UPDATE:
I added this to the workorder controller:
def changestatus
#workorder = Workorder.find(params[:id])
#workorder.update_attribute :wostatus_id, '4'
render nothing: true
end
I added this to the routes:
resources :workorders do
member { put :changestatus }
end
This is currently in the js.coffee:
$.ajax
type: 'PUT'
url: "http://localhost:5000/workorders/11/changestatus"
data:
wostatus_id: 4
(I'm hard coding things until I get the next step working.)
SO - this works, workorder 11 gets wostatus_id changed to 4.
But, now I'm having trouble getting the right information from the html.
The html contains 2 data fields I need - one for which workorder and the other is what the wostatus_id is.
Here is the html for the update url:
<div class="false" data-change-url="http://localhost:5000/workorders/16/changestatus">
I thought this would get that url - but, it doesn't work:
$(this).data('change-url')
If I understand correctly, then I think your sending a single value while your controller expects an array, and you're using different param names (wostatus_id on client, workorder on server).
Perhaps what you want is this:
$.ajax
type: 'POST'
url: $('#sort2').data('update-url')
data:
workorder: $('#sort2 span').map((i, el) ->
el.text()
) // Change the selector to the elements that holds the ID
Found out I didn't need any new controller code - I could just use update.
This is for jquery-ui sortable.
receive: (event, ui) ->
str_id = $(ui.item).attr('id')
woid = str_id.split('_')[1]
$.update "/workorders/" + woid,
workorder:
wostatus_id: $(this).data('wostatus-id')
Thanks for the help - you got me going in the right direction.
In application.js I have:
$("#combo_box").live('change', (function() {
$.ajax( {
url: '/my_controller/get_data',
data: {id: some_id},
success: function(data){ do_stuff_with_data(data) }
}
)
} ) )
and in my_controller code I have:
def get_data
id = params[:id]
#data = MyModel.DoSomeStuff(id)
respond_to do |format|
format.js { render :json => #data}
end
end
But for some reason the function in success is only run once (I think) and the rest of the times Firebug reports a 304 Not Modified when the combo box change triggers an ajax call.
How does that work? Thanks!
The default method for $.ajax is GET:
type String
Default: 'GET'
so your $.ajax call is doing a GET request and someone is probably caching it. Try adding cache: false to your $.ajax options:
cache Boolean
Default: true, false for dataType 'script' and 'jsonp'
If set to false, it will force requested pages not to be cached by the browser.
$(document).ready ->
$('#auto').autocomplete( source: "main/search" )
the code beyond set up the autocomplete env,'#auto' is an input filed.
In my main controller I got the search action
def search
#user = User.find_by_name 'castiel'
respond_to do |format|
format.json { render :json => #user.to_json(:only => :name) }
end
end
everything seems working perfectly fine.When I type in a char,let's say a "c",so the ajax request was sent and received the json data.
In firebug, it shows the ajax request successfully get the json data below
{"name":"castiel"}
so far so good,but the json data's type is not the kind that autocomplete demanded.It demands that json data is like below.
{"id":"castiel", "label":"castiel", "value":"castiel"}
So here is problem,how to modify the josn data to the kind that I wanted.
In the success function, you need to return something like
.autocomplete({
source: function(request, response){
$.ajax({
url: "main/search",
dataType: "json",
data: {
style: "full",
maxRows: 12,
term: request.term
},success: function( data ) {
response( $.map( data, function( user ) {
return {
label: user.name,
value: user.id
}
}));
Rails allows you to serve JSON in any structure from your controller. When using the jQuery autocomplete helper, you serve JSON back in the format needed by using the autocomplete library method json_for_autocomplete as follows:
# app/controllers/example_controller.rb
def autocomplete_example
items = Example.where(...)
respond_to do |format|
format.json do
render :json => json_for_autocomplete(items, 'name', [])
end
end
end
The first argument to json_for_autocomplete is your collection of objects to return. The second is the method to call on those objects to define the values in the JSON hash. The final argument is for any extra options, which can be found at:
https://github.com/crowdint/rails3-jquery-autocomplete/blob/master/lib/rails3-jquery-autocomplete/autocomplete.rb