the main part of this question relates to how I can define a route in a javascript file. At the same time, I just want to make sure what I am doing is ok. Essentially, on my view page, I can see my records. When I output the records, each row I give
<input type="button" value="Delete" onclick="delete_alert( {{ alert[0].id }} )"/>
This gives the user the option to delete an alert. Before going straight into things, I like to first send it to javascript.
function delete_alert(id){
var answer = confirm("Confirm delete");
if (answer){
$.get("NickAlertBundle_delete", { row: id });
}
}
So if the delete is confirmed, it calls this route
NickAlertBundle_delete:
pattern: /view-alerts
defaults: { _controller: NickAlertBundle:Alert:delete }
requirements:
_method: GET
My first question here is they are deleting the alert from the view-alerts page. Once they confirm deletion, I dont want them to go anywhere, just have the view-alerts page refresh (as this will remove the deleted alert). But is giving the delete route a pattern of view-alerts confusing or wrong to do? Its what I want to do as I want them to stay on this page, just doesnt feel right.
Anyway, my real problem is the error
No route found for GET /NickAlertBundle_delete (from
http://localhost:8000/view-alerts;) (404 Not Found)
So I dont think the way I have define the route in my javascript file is correct. So how can I fix this route?
Thanks
I think you should use an URL as a first parameter to jQuery get. You are currently using the Symfony2 route name, not the URL.
Change it to /alert-views.
OR:
You can add a data attribute to your HTML button that would contain your path, If you are using Twig as templating engine, you can write something like:
data-url={{path('NickAlertBundle_delete')}}
Then using the attr() jQuery function onclick on your button:
var url = $(this).attr('data-url');
Finally, the jQuery get function can be sent to url.
I hope it helps.
Related
This isn't a duplicate question by any means and I have tried a lot finding solutions.So, please read it before down voting.
Background:
This application is like a note-taking web app where you can post/delete your notes.
Each item in the list has an id which is needed when making a delete call.
In my application, I have to delete individual items from a list which is generated by looping over a JSON response (by a REST API) using PHP.The JSON response can be obtained after successful login.
Question:
To implement delete functionality I have to send id of each of the items as a parameter to the rest api delete call.
So, for this I have to generate dynamic links of the form :
http://localhost/myfolder/api/notes/:id
which should be passed to the delete.php function (Which I have implemented in CURL).
I searched for possible ways :
Using a PHP function: It seems to be complex, however if there is some way to invoke a PHP function (the delete code using CURL) on click of a link (Which I found not possible as per some answers ?) this could be a great solution.
Using Javascript: I have to call a function upon click of link that sets a variable $_SESSION["id"] to the current item["id"] and then goes to delete.php where I use the $_SESSION variable to first set up the link and then use the CURL code.
I tried basic implementation using the second approach but I have hit a roadblock in this issue. It would be great if you could tell with a bit of code which approach should be followed or any other way to do this ?
This functionality is present in twitter/facebook and almost every such service, how do they implement this, the basic approach should be the same, right: Generate dynamic links and pass them to a php script on click ?
Basic Javasript approach :
<script>
<script>
var el = document.getElementById('del1');
el.onclick = del1;
function del() {
// I have to set $_SESSION here
return false;
}
</script>
echo "<a href=\"delete.php\" title=\"Delete\" id=\"del1\">";
//Here, I have to pass the item["id"] to the javascript function.
I had tried some other ways but I have modified the code a lot so, I can't post them. Thanks for your help.
Regarding #2, you can't access the user's session from Javascript, so that will not work.
My preferred way (if using jquery) is to put the id in a data attribute of the delete button (or the block as a whole). Then in the delete onclick function do something like
<div class="block" data-itemid="<?=$item['id']?>">
...
<div class="delete_button">Delete</div>
</div>
...
$('.delete_button').on('click',function(event) {
block = $(event).target.parent('.block');
itemid = block.data('itemid');
$.post('delete.php',[itemid: itemid]...);
});
Well i wanna create an Ajax Drag and Drop Shopping cart using only javascript and ajax. Currently i'm using the example in this page as a stepping stone. Right now it's only with local jquery and it works fine but i want to make the cart work with ajax calls. Note that i do not want to use a server side language( like php, rubby, asp etc), only html and javascript.
My initial thought was that at the $(".basket").droppable i should add an ajax call to another html page containing the "server logic" in javascript, execute in that file all the necessary steps( like reading the get variables (product name, product id and quantity), set a cookie and then return an ok response back. When the server got the "ok" response it should "reload" the cart div with the updated info stored inside the cookie.
If this was with php i would know how to do it. The problem is that as far as i know, you can execute javascript once it reaches the DOM, but how can you execute that js from inside the page that isbeing called upon ? ( thanks to Amadan for the correction)
I've thought about loading the script using $.getScript( "ajax/test.js", function( data, textStatus, jqxhr ).. but the problem with that is that the url GET variables i want to pass to the "server script" do not exist in that page.
I havent implemented all the functionality yet as i am stuck in how to first achieve javascript execution inside an ajax target page.
Below is a very basic form of my logic so far
// read GET variables
var product = getQueryVariable("product");
var id = getQueryVariable("id");
var quantity= getQueryVariable("quantity");
//To DO
//--- here eill go all the logic regarding cookie handling
function getQueryVariable(variable) {
var query = window.location.search.substring(1);
var vars = query.split("&");
for (var i=0;i<vars.length;i++) {
var pair = vars[i].split("=");
if (pair[0] == variable) {
return pair[1];
}
}
alert('Query Variable ' + variable + ' not found');
}
Any help regarding this matter will be appreciated.
Note: Logic in simple words:
1)have an html page with products+cart
2)Have an "addtocart.html" with the "Cart Server Logic"( being the target of the ajax call when an item is dropped into the product.)
If you have some other idea on this, please enlighten me :)
thanks in advance
Foot Note-1:
if i try loading the scipt using
$("#response").load("ajax/addtocart.html?"+ $.param({
product: product,
id: id,
quantity:quantity
})
);
i get the alert about not being able to find the url parameters( something that i thing is normal as because the content is being loaded into the initial page, from which the request is started, there are no get parameters in the url in the first place)
The problem is that as far as i know, you cannot execute javascript contained in the target of an ajax call, as that page never reaches the browser interpreter.
This is either incorrect or misleading. The browser will execute any JavaScript that enters DOM. Thus, you can use $.load to load content and execute code at the same time. Alternately, you can use hacked JSONP to both execute code and also provide content as a JSON document.
EDIT: Yes, you can't get to the AJAX parameters from JavaScript. Why do you want to? Do you have a good reason for it, or is it an XY problem?
The way I'd do it is this:
$('#response').load(url, data, function() {
onAddedToCart(product, id, quantity);
});
and wrap your JS code in your HTML into the onAddedToCart function.
Depending on what exactly you're doing, it could be simplified even further, but this should be enough to cover your use case.
I am not sure if I worded my question correctly. I'm not actually sure how to go about this at all.
I have a site load.html. Here I can use a textbox to enter an ID, for example 123, and the page will display some information (retrieved via a Javascript function that calls AJAX from the Flask server).
I also have a site, account.html. Here it displays all the IDs associated with an account.
I want to make it so if you click the ID in account.html, it will go to load.html and show the information required.
Basically, after I press the link, I need to change the URL to load.html, then call the Javascript function to display the information associated with the ID.
My original thoughts were to use variable routes in Flask, like #app.route('/load/<int:id>') instead of simply #app.route('/load')
But all /load does is show load.html, not actually load the information. That is done in the Javascript function I talked about earlier.
I'm not sure how to go about doing this. Any ideas?
If I need to explain more, please let me know. Thanks!
To make this more clear, I can go to load.html and call the Javascript function from the web console and it works fine. I'm just not sure how to do this with variable routes in Flask (is that the right way?) since showing the information depends on some Javascript to parse the data returned by Flask.
Flask code loading load.html
#app.route('/load')
def load():
return render_template('load.html')
Flask code returning information
#app.route('/retrieve')
def retrieve():
return jsonify({
'in':in(),
'sb':sb(),
'td':td()
})
/retrieve just returns a data structure from the database that is then parsed by the Javascript and output into the HTML. Now that I think about it, I suppose the variable route has to be in retrieve? Right now I'm using AJAX to send an ID over, should I change that to /retrieve/<int:id>? But how exactly would I retrieve the information, from, example, /retrieve/5? In AJAX I can just have data under the success method, but not for a simple web address.
Suppose if you are passing the data into retrieve from the browser url as
www.example.com/retrieve?Data=5
you can get the data value like
dataValue = request.args.get('Data')
You can specify param in url like /retrieve/<page>
It can use several ways in flask.
One way is
#app.route('/retrieve/', defaults={'page': 0})
#app.route('/retrieve/<page>')
def retrieve():
if page:
#Do page stuff here
return jsonify({
'in':in(),
'sb':sb(),
'td':td()})
Another way is
#app.route('/retrieve/<page>')
def retrieve(page=0):
if page:
#Do your page stuff hear
return jsonify({
'in':in(),
'sb':sb(),
'td':td()
})
Note: You can specify converter also like <int:page>
I receive a google ID from an Ajax call and then want to use that ID to update a button on my view.
Here is the code in new.js.erb, which is linked to a new.html.erb.
Problem is, I don't know how to pass the variable's content. Restaurant is a json. The alert returns the correct ID and when I search my db on the terminal with the returned google id I find the restaurant.
Here is the code:
alert(restaurant["google_id"]);
var google_id = restaurant["google_id"];
$("#rating_bar").html("<%= escape_javascript(render 'reviews/buttons/full_profile_rate_restaurant', :google_id => "+google_id+".html_safe) %>");
What happens is that the variable being passed is the string "google_id" instead of the combination of letters and numbers that is the google ID. I've tried multiple approaches, this is just one of many wrong one - I think this question is pretty easy for anyone who knows their JS really well.
It is not possible to pass a JS variable to the ruby partial.
As Ryan Bigg explained for the same type of problem here, its not possible to send the variable while rendering that partial. We need to work out some thing else. Even i also had the same issue once.
Alternatively,
if that is google_id is only a variable to display in the partial, then update those divs manually after rendering that partial.
like
$("#rating_bar").html("<%= escape_javascript(render 'reviews/buttons/full_profile_rate_restaurant', :google_id => "sample_id") %>");
// Now update the required elements
$("#what-ever-ids").text(google_id);
or just create some other action in that controller, and call send an ajax request to that action, and there you will have this js variable, and in that js.erb file render the same partial which you actually want to update with the google_id variable.
I have a script that loads the code dynamically. It is kind of a search engine. When I press a search button, the action gets triggered and a new page opens with many parameters.
I want to override one of the parameters generated with the script in the new URL. JS code is quite big and hard to read, but I have found the important part in the Firebug DOM editor.
This is the pattern of the URL generated when you perform the search:
http://www.example.com/...?ParameterOne=123&ParameterTwo=Two&ThisParameter=Sth&ParameterFour=Four...
What I want to edit is "ThisParameter" and change its value. This is the part edited in the DOM that does what I want:
Foobar = {
_options: [],
...
var options = {"ParameterOne":123,"ParameterTwo":"Two","ThisParameter":"ABC","ParameterFour":Four,...}
...
And this is the output of "ThisParameter" when you choose "Copy path" in Firebug's DOM tab:
_options[0].ThisParameter
I am wondering it this is possible at all. What makes me think that it is, is the fact that I can change this parameter in Firebug and it works perfectly. So, if Firebug can edit it, there should be a way to influence it with another script.
Looking forward to any suggestions, thank you in advance!
Since you cannot edit the dynamic script you have the following options:
You have to try to give the script the correct input and hope it uses your value.
Add a script to the results page which will read the url and arguments, change it and redirect, as we discussed here. (If you put everything in functions it should not conflict with the dynamic script if the functions are uniquely named.)
You could try adding something like this jQuery code to the page with the search button:
$('input[name=search_button_name]').click(function(e) {
e.preventDefault();
var form_search = $('#search_form_id');
$('<input>').attr({
type: 'hidden',
name: 'ThisParameter',
value: 'SomethingElse'
}).appendTo(form_search);
f.submit();
});
You can override any js function and method, or wrap you code around it. The easiest thing would be to look at the code you get and once it gets loaded, you re-declare a method with your own functionality.
I you are trying to replace a parameter in a specific jquery request, you can even wrap around the jquerys ajax method:
var jquery_ajax = $.ajax
$.ajax = function(options){
// parse only a specific occurence
if(options.url.indexOf("example.com") > -1) {
// change the url/params object - depending on where the parameter is
options.params.ThisParameter = "My Custom value"
}
// call the original jquery ajax function
jquery_ajax(options);
}
But it would be a lot cleaner to override the method that builds the ajax request rather than the ajax request itself.
I would investigate further on the scope of the variable options (var options), is it global? i.e. if you type 'options' in the Firebug console, does it display its properties?
If so, you could then access it via your own script and change is value, e.g.
options.ThisParameter = 'my-own-value';
You might hook your script to the click event of the search button.
I hope this helps, it could be more specific maybe if you have some sample code somewhere.