Guide on initiating a GET request to a Rails server using JavaScript

Question

Guide on initiating a GET request to a Rails server using JavaScript

I have spent hours searching online with no luck in finding a solution. I am trying to create a JavaScript function that sends a GET request to my Rails controller, and in return receives a JSON object. Does anyone know how to accomplish this? Thank you.

javascript ruby-on-rails json

Answer 1

Answer №1

When using jQuery, I typically implement the following approach:

First, select the element you want to trigger an event on, such as clicking:

$(function() {
  $('#foo').click( function(){
    var params = '{"field1": "value1", "field2: "value2"}'; 
    $.get('/controller/bar', params, function(data){ 
      alert(data); 
    });
  });
});

Next, in your Rails controller:

def bar
  /// perform necessary operations
  render :json => {"response" => "OK"}
end

Ensure you have the corresponding route set up in your routes.rb file:

match 'controller/bar' => 'controller#bar'

Lastly, customize the word "controller" according to your specific code. Remember that tools like Firebug can help troubleshoot any issues!

Answer 2

When using jQuery, I typically implement the following approach:

First, select the element you want to trigger an event on, such as clicking:

$(function() {
  $('#foo').click( function(){
    var params = '{"field1": "value1", "field2: "value2"}'; 
    $.get('/controller/bar', params, function(data){ 
      alert(data); 
    });
  });
});

Next, in your Rails controller:

def bar
  /// perform necessary operations
  render :json => {"response" => "OK"}
end

Ensure you have the corresponding route set up in your routes.rb file:

match 'controller/bar' => 'controller#bar'

Lastly, customize the word "controller" according to your specific code. Remember that tools like Firebug can help troubleshoot any issues!

Answer 3

Answer №2

Using jQuery ajax allows for making requests using either the get or post methods in JavaScript.

jQuery.ajax({
  url: "url to controller method", // ensure it is mapped in routes.rb in rails
  type: "GET",
  data: {field1 :value1, field2:value2}, // include data if needed
  dataType: "json"
  success: function(data){
  // handle response object(json) here
  }
});

The response from Rails will resemble the following code snippet, which can be customized based on your needs.

respond_to do |format|
  format.js { render :json => @json_data }
end

Answer 4

Using jQuery ajax allows for making requests using either the get or post methods in JavaScript.

jQuery.ajax({
  url: "url to controller method", // ensure it is mapped in routes.rb in rails
  type: "GET",
  data: {field1 :value1, field2:value2}, // include data if needed
  dataType: "json"
  success: function(data){
  // handle response object(json) here
  }
});

The response from Rails will resemble the following code snippet, which can be customized based on your needs.

respond_to do |format|
  format.js { render :json => @json_data }
end

Guide on initiating a GET request to a Rails server using JavaScript

Answer №1

Answer №2

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