In an AJAX call back in drupal it is normally recommended to use drupal_json() to send data to client. This function converts the raw data into JSON along with HTML encoding.
I want to send the HTML data without encoding to client.
for this I am using following code:
print $html_output;
exit(0);
Is there any recommended or best way in drupal to do so?
If you need to output only the HTML output returned from the menu callback, then the following code is the correct one:
print $html_output;
module_invoke_all('exit');
exit();
If you want your output to appear together the blocks Drupal normally output, then the code needs to be changed to the following:
return $html_output;
That will do the trick. Allthough you should invoke hook_exit first. However this is shortcutting the framework some what, it may work in simple cases but wont work for forms etc.
The only time I have used this method is if I am printing some data which is allready json encoded.
Related
I want to load objects with ajax and then for every object make with options.
What is better to do when i load content from server via ajax:
put everything in a string variable (including html tags) named output with += and put it on a loop for each object,then append it.
append an output for every object i load in a div
or a better solution
if there is a better solution is there anyone who can help me ?
Well that really depends on a technology stack that you are using.
But in essence it is exactly what is going on.
You have some array of products coming back from an ajax request.
You want to clear out the contents of the area where you are inserting those.
Then you wanna iterate over your collection of items and using some kind of template generate an html for each one. the simplest one in plain java script would be string concatenation.
then you concatenate them all and insert the result as innerHTML inside your container.
It may be ugly for a start but as you will learn more - you will improve.
Is there another way to view the profiling results of MiniProfiler (I'm specifically interested in EF5 version)?
Every tutorial that I've seen uses MiniProfiler.RenderIncludes(); but since my MVC app mostly returns JSON, that is not an option for me.
Is there a way to write results to file or something like that?
You can read and write results to just about anywhere by changing the MiniProfiler.Settings.Storage to a different IStorage implementation from the default (which stores to http cache). If you wanted to, this could store to and read from a file pretty easily (you would have to write your own custom implementation for that).
The files served by RenderIncludes are the html templates for displaying the results and the script to retrieve the results from the server and render them on the client (all found here). But you are by no means obliged to use this mechanism. If you want to write your own logic for retrieving and displaying results, you should base this off of the logic found in MiniProfilerHandler.GetSingleProfilerResult. This function roughly performs the following (putting in the siginificant steps for your purposes):
Gets Id of next results to retrieve (through MiniProfiler.Settings.Storage.List())
Retrieves the actual results (MiniProfiler.Settings.Storage.Load(id))
Marks the results as viewed so that they wont be retrieved again (MiniProfiler.Settings.Storage.SetViewed(user, id))
Converts these to ResultsJson and returns it
With access to MiniProfiler.Settings.Storage, you should be able to retrieve, serve and consume the profile results in any way that you want. And if you are interested in using the RenderIncludes engine but want to mess around with the html/js being served, you can provide your own custom ui templates that will replace the default behavior.
I need to get response data (incuding html markup) on server and then replace them to anothe one and send to the client.
Is where the best way to do this?
Response.OutputStream is closed for reading.
So what can I use for reading data?
I need to get response data (incuding html markup) in controller
For obvious reasons that's not possible. The response HTML is generated when the view executes, at a much later stage after the controller action has finished executing.
If you want to modify the response HTML you could write a response filter.
I'm new in Spring MVC, I just started my first project and I'm doing some research to be sure to set it up in a proper way (should work in the long-term!).
I already know that for a part of the project, I will need to manually change small fragments of the page through Ajax. I know it's possible to change part of the page (using Tiles). What I really need, though, is for example to change a single line in a table containing dynamically generated data (i.e. data coming from the database).
Can you suggest anything?
I don't want to use JSF or Spring JS.
Thank you.
You have at least two choices:
render on the server, send the update html snippet to the brower and use JavaScript to replace them
send an AJAX request to the server, but this time return only the data (JSON) and the "render" the table line in the browser (or just update some pices of text)
For the fist choice you need a dedicated jsp file (and tiles configuration) to render only a single line. As fare as I know, there is no technical support.
What you can do, to reduce the amount of duplicated code is to use that single line rendering jsp in like in include in the one that renders the complete table.
Of course instead of using JSP to render the single line you can also use the Java Method that handles the request, and make it returning the html string.
I am trying to send data to my jsp via:"xhr.send(projectCode);"
but apparently the parameter is not received when I am trying to realise it with System.out.print it is a null displayed.
so the story from the begining. my javascript function send the parameter to the jsp whitch construct an xml file and resend to the first one.
this will reconstruct my second dropdownList with the xml code constructed and received.
so the problem that the parameter dosent sent at all.
What should I do.
Just note in case the syntax whatever you have sent is like this:
url="postjob2.jsp?param=" + param;
After param=" keep a space and then the parameter. My issue got resolved as soon as I entered the space.
The simplest all-round solution is to run your application with a HTTP-tracer, such as fiddler for windows or wireshark. In that way you can see if the proper data is being submitted from your client to the server Given the amount of details you provide, I think this is the best starting point