I'm quite new to JavaScript and Node JS and I have a such a situation. When I try to call get of express.js with a single parameter everything works fine, but when I try to call get with more than one parameter, it trims the query.
For example I have such call and function
app.get('path/data', myFunc);
// in another file
function myFunc(req, res) {
// do some stuff
}
When the url is path/data?id=5 or path/data?name=foo everything is fine. But when I use for example url like path/data?id=5&name=foo in myFunc I get url as path/data?id=5. So I get url's first part - what is before & sign.
Now what am I doing wrong? Is there something that I'm missing? How can I get whole url in myFunc without being trimmed?
Use
app.get('path/data?:id?:name')
And for retrieving the values, use req.query.id and req.query.name.
For accessing the REST api, you need to hit:
http://localhost:8080/demo?id=3&name=stack
So, by this you can add multiple parameters in your api.
Hope this helps.
I found the problem. I was requesting via curl and it turns out that shell command trims in case of there is an & in the url. So there is a need no add quotes like this
curl "path/data?id=5&name=foo"
Related
So, basically what I am doing is scraping a webpage, getting all of the data I want and displaying it on a webpage on my site. When scraping this specific page i need the link within the 'href' tag. However, this particular site doesn't use regular links. Inside the 'href' tag is a query string. My plan was to take what was inside the 'href' and create a url to make my next request, but now when I try to pass the query string into the url, I can not access it in Node via req.params
I want to know if there is a way to maybe pass a query string without the server thinking it is a query string, or will I have to use req.query to take all the params and build the URL again from scratch?
Here are some examples of what I am talking about:
page1.ejs:
some.href = "?variable=bleh"
Server-side handling:
app.get('/display/:string', function(req, res) {
var url = "http://theurlineed.com/" + req.params.string;
});
This code does not work. When i click on the link it tells me it couldn't get /display/?variable=bleh
You need to encode the query string so that it is not treated like a query string in the URL:
some.href = encodeURIComponent("?variable=bleh");
So then your URL will be: /display/%3Fvariable%3Dbleh. As mentioned in the comments, Express will automatically decode the value in req.params.string so it will be the right value.
I am facing issue in angular js, right now we have two urls in our application,
http://localhost/xyz?page=documents&view=grid&sortorder=desc&sortby=updatedate&limit=35&offset=0
and then we another url
http://localhost/abc
When i move from the first url to the second url it carries the query params from the first url, this is how the second url looks like
http://localhost/abc?page=documents&view=grid&sortorder=desc&sortby=updatedate&limit=35&offset=35
We don't the fetch url carrying the query params from the first page. I am new to angular js, I have came across few options like
$location.search({});
$location.url($location.path())
But those didn't work at all.
I think i know what you mean, to remove parameters use
$location.url($location.path());
Hope it helps
Check this documentation for the location with angular
1.Save the query object $location.search()in some place (local storage or cookies), then in the target controller $.map(query,funcion(k,v){ $location.search(k,v});
2.Dynamically append to the end url2 + $location.path() in href attribute
$location.url changes path, search and hash.
So, $location.url('new_path') should work!
I want to pass a parameter to my Store proxy to retrieve the right data from the server. I need to pass the parameter without the name prefix and just the value.
Instead of this kind of url :
myAppUrl/collections/units?collectionId=54
which can be done like this:
myStore.getProxy().extraParams.collectionId = 54;
I want to have a call like this:
myAppUrl/collections/54/units
My web service is adapted for both calls I just need the correct client code to pass the parameter.
Please help and advise.
An old question, but I write for anyone with this problem. I implemented the idea of #Saki in this package (for ExtJS 6) because of my own needs:
https://bitbucket.org/alfonsonishikawa/extjspackages/wiki/Server%20URL%20Placeholders
The idea is being able to use an URL like:
proxy: {
type: 'rest',
url: 'myAppUrl/collections/${collectionId}/units',
appendId: false
}
With that package, you just have to configure your proxy like above and call #load() with params:
store.load({
params: {
collectionId: 54
}
});
(getProxy().extraParams can be used as default value)
This is the source code as example that you asked #Saki about.
It looks almost like REST request but not exactly as REST places indexes at the end of url. You could solve it by implementing a custom buildUrl of Ajax or Rest proxy. In any case, see how is this method implemented in Rest proxy.
you can set your url dynamically and then call load method of store using below code.
store.getProxy().setUrl('your new url');
store.load();
but if you gonna use this method then you have to set correct url every time other-vice may be you will get wrong data.
I am calling another application context from window.showModalDialog but confused with following work. Same code to pass parameter within showModalDialg.
var myArguments = new Object();
myArguments.param1 = "Hello World :)";
window.showModalDialog("java2sTarget.html", myArguments, '');
and i can read these myArguments(parameters) in generated HTML using following code:
<script>
document.write(window.dialogArguments.param1);//Hello World :)
</script>
I can't use query string & i am sending myArguments(parameter) because i want to hide parameter from Application user.
Now i am calling servlet from showModalDialog(..)
onclick="window.showModelDialog('http://localhost:7778/app/servlet/test',myArguments,'');"
onclick="window.showModelDialog('http://localhost:7778/app/servlet/test',myArguments,'');"
But as per my knowledge
Servlet --> Servlet container --> HTML+JS+CSS
so JS will be available at last phase, but i want to use in first phase(Servlet).
Now, i need to make some Decision in servelt code based on myArguments(parameter).
is there any way to read these myArguments(parameters) in servlet code?
Pass it as a request parameter in the query string.
var queryString = "param1=" + encodeURIComponent("Hello World :)");
onclick="window.showModelDialog('http://localhost:7778/app/servlet/test?' + queryString, myArguments, '');"
No, there's no other alternative. The request URL is not visible in the modal dialog anyway.
As main objective is to hide query string from User to avoid misuse of those parameters.
I tried following work around.
Developers send hidden parameters to get relative information form source(e.g.:DataBase). And we also know that we can send hidden information in Window.showModalDialog using dialogArguments
Work Around:
(i) I got relative information from server one-step before calling Window.showModalDialog using jQuery.getJSON()
(ii) i used google-gson API at servlet side to convert JavaBeans into Json strings.Solution 1 Solution 2
(iii) Convert JSON into javascript object using jQuery.parseJSON
var args = jQuery.parseJSON(json);
window.showModalDialog("pages/"+args.pageName, args, '');
i used args.pageName to make things dynamic
Please suggest improvements in this work-around. Thanks
I am trying to create some JSON to be used for displaying a chart using Highcharts
http://www.highcharts.com/
I have copied one of their examples:
http://www.highcharts.com/stock/demo/basic-line
Click "View Options" under the graph to see the source. There is also a JSFiddle there to play with
If I copy that locally it all works fine.
The problem is when I try to use my own data source.
I have an ASP.Net MVC controler which is spitting out a list of arrays, just like their data source. However, that doesn't work.
Their datasource looks like this
http://www.highcharts.com/samples/data/jsonp.php?filename=aapl-c.json&callback=?
and they retrieve it like this
$.getJSON('http://www.highcharts.com/samples/data/jsonp.php?filename=aapl-c.json&callback=?', function (data) {
So I thought I'd take a step back and copy thier data exactly and put it in a text file on my server and try that:
So I tried this
$.getJSON('/data.txt', function (data) {
and this
$.get('/data.txt', function (data) {
but neither work
I have also tried using both JSON.parse and jQuery.parseJSON after retrieving the data, but again - that doesn't seem to work
I am also wondering what the ? is at the start of their data
Their data looks like this
?([[<some data>],[some data]]);
I don't get any error message, the graph just doesn't display
any ideas?
SOLVED IT
Just need to retrive the data and turn it into an array and pass it to the chart.
Needs to be an array, not JSON
That datasource is ouputting JSONP, which is for cross-domain AJAX requests. It's not valid 'raw' JSON because of that extra callback(...) wrapper.
Read up about it here: http://api.jquery.com/jQuery.ajax/ under the 'dataType' section.
As you say in your tags, it's not JSON, it's JSONP. Do not parse it, catch it with a callback. Use jQuery.getScript to do it, and define function callback(data). Inside that function, data should contain the (parsed) object. Also, replace the ? in the URL with callback (or whatever you named your function) - ? is not a valid identifier in JavaScript, so ?([....]) is nonsense.