Mdthbs

I am looking to create a slack payload. I am struggling to create this payload in Apex.

{

        "username": "Bot Name",

        "text": "*Call Recording* :tada:",

        "attachments":[

            {

            "author_name": "Dean",

            "title": "Call Recording",

            "title_link": "https://api.slack.com/",

            "color": "#36a64f",

             "fields": [

                    {

                        "title": "Account",

                        "value": "var",

                        "short": true

                    },

                 {

                        "title": "Contact",

                        "value": "var",

                        "short": true

                 }

                 ]

             }



        ],

        "icon_emoji": ":dromedary_camel:"

    }

So far I have created the following:

JSONGenerator gen = JSON.createGenerator(true);

            gen.writeStartObject(); //Inserts {

            gen.writeStringField('channel', r.channel);

            gen.writeStringField('icon_emoji', ':dromedary_camel:'); 

            gen.writeStringField('username', r.bot_username_var);

            gen.writeStringField('text', r.title_var);

            gen.writeFieldName('attachments');

                gen.writeStartArray();

                    gen.writeStartObject();



                        gen.writeStringField('author_name', r.rep_var);

                        gen.writeStringField('title', r.call_recording_title_var);

                        gen.writeStringField('title_link', r.call_recording_title_var);

                        gen.writeStringField('color', '#36a64f');

                        gen.writeFieldName('fields');

                        gen.writeStartArray();

                            gen.writeStartObject();

                                gen.writeStringField('title', 'Account');

                                gen.writeStringField('value', r.account_var);

                                gen.writeStringField('short', true);

                            gen.writeEndObject();

                            gen.writeStartObject();

                                gen.writeStringField('title', 'Contact');

                                gen.writeStringField('value', r.contact_var);

                                gen.writeStringField('short', true);

                            gen.writeEndObject();



                        gen.writeEndArray();



                    gen.writeEndObject();

                gen.writeEndArray();

            gen.writeEndObject(); //Inserts }



            String body = gen.getAsString(); //Translates JSONGenerator to string to be passed to callout

The simplest way for you to do this is to leverage a custom class, like so:

Classes (you can put them all inside of a larger class, or keep them as individual Apex Classes

public class mySlackPayload {

  public String username;

  public String text;



  public List<mySlackAttachment> attachments;

  <the rest of your props go here>



}



public class mySlackAttachment {

  <attachment props go here>

}

Then, in your current code, you can do this

mySlackPayload myPayload = new mySlackPayload();

myPayload.username = 'xxx';

<fill the rest of the props>



String serializedPayload = JSON.serialize(myPayload);

Doing this with sObjects will add extraneous properties added by Apex that will mess up that payload un-necessarily. You can also add constructors to those classes to take an sObject as a parameter and populate properties accordingly.

PS: The tool described in comments by @kurunve should generate this custom class for you (I admit I find the result of that class a bit bloated), then you would simply use the second part of my code to populate and call it.