我正在尝试通过ajax将参数传递给数据

Question

I am trying to pass value through an ajax json array but value of catergory variable is not getting in controller action

var category = $('#category').val();
var url = $('#ajax_action_search').val();
$.ajax({
  type: "POST",
  data: {
    'category': category
  },
  dataType: "json",
  cache: false,
  contentType: false,
  processData: false,
  success: function(response) {}
});

Answer 1

You need to use the parameter namespace matching your extension/plugin:

$.ajax({
  // ...
  data: {
    'tx_myext_foo[category]': category,
  },
  // ...
});

But you'll also need to configure the cHash evaluation since this will lead to a HTTP request like /?tx_myext_foo[category]=X which will fail without a matching cHash .

This can be done with the excludedParameters configuration option .

Answer 2

Please check the Controller action if category (parameter name) passed from the ajax is exactly same in the controller action too

var category = $('#category').val();
var url = $('#ajax_action_search').val();
$.ajax({
    type: 'POST',
    contentType: "application/json; charset=utf-8",
    cache: false,
    async: false,
    url: url,
    data: JSON.stringify {
        category: category
    },
    dataType: 'json',
    success: function(response) {}
});

Answer 3

You need to make ajaxurl with action and controller. and then pass the data in full format.

var ajaxUrl = '<f:uri.action action="youraction" controller="Yourcontroller" />';
var category = $('#category').val();

$.ajax({
    type: 'POST',
    url: ajaxUrl,
    data: '&tx_yourext_yourplugin[category]='+category,
    success: function(response) {
    },
});

Answer 4

Just make the following changes :

var category = $('#category').val();
var url = $('#ajax_action_search').val();

$.ajax({
  type: "POST",
  url:url,
  data: {'category': category},
  dataType: "json",
  success: function(response) {}
});