CRUD Operation On List Items Using REST API Services In SharePoint 2013: Part Three

 Before reading this article, please go through the following article series:

• CRUD On List Items Using Web Services And jQuery In SharePoint 2013 - Part One
• CRUD Operation On List Items Using JSOM In SharePoint 2013 - Part Two 

Introduction

SharePoint 2013 has greatly expanded the REST services available to developers. With this, we have much more SharePoint functionality exposed via JSOM and Web Services. The goal of this article is to provide how to perform basic create, read, update, and delete (CRUD) operations on lists and list items with the REST services.

SharePoint REST endpoint Overview

The following table contains typical REST endpoint URL examples to get you started working with SharePoint data. Prepend http://server/site/_api/ to the URL fragments shown in the table to construct a fully qualified REST URL. Below is a list of the basic commands used to get List Items from a SharePoint List through the SharePoint 2013 REST Services.

URL endpoint	Description	Supported HTTP Method
/_api/Web/Lists/ getbytitle('listname')	Getting a list details by its title and updating it as well. Ifanyone changes your list title, your code will break.	GET, POST
/_api/Web/Lists(guid'guid id of your list')	Same as above but changing list title will not affect the code.	GET, POST
/_api/Web/Lists/getbytitle(' listname ')/Fields	Retrieving all fields associated with a list and add new fields	GET, POST
/_api/Web/Lists/getbytitle('listname')/ Fields/getbytitle('fieldname')	Getting details of a field, modifying and deleting it.	GET, PUT, PATCH, MERGE, DELETE
/_api/Web/Lists/getbytitle('listname') /Items	Retrieving all items in a list and adding new items	GET, POST
/_api/web/lists/getbytitle('listname') /GetItemById(itemId)	This endpoint can be used to get, update and delete a single item.	GET, PUT, PATCH, MERGE, DELETE
/_api/lists/ getbytitle (‘'listname')/items?$orderby=Title	Order Your Results	GET, POST
/_api/lists/ getbytitle (‘'listname')/items?$select=Title,Id	Retrieve Selected Column Data value	GET, POST
/_api/web/lists/getbytitle('listname')/Items/ ?$select=Title,FieldName/Id&$expand= FieldName /Id	Retrieving the lookup value	GET, POST

Now, I will demo all the operations on list items, including retrieve, create, update and delete on list items.



Retrieve the list items



Here is the main code in detail:

1. function retriveListItem()  
2. {  
3.   
4.     $.ajax  
5.     ({  
6.         url: _spPageContextInfo.webAbsoluteUrl + "/_api/web/lists/GetByTitle('companyInfo')/items?$select=Company,Industry",  
7.         type: type,  
8.         data: data,  
9.         headers:  
10.         {  
11.             "Accept": "application/json;odata=verbose",  
12.             "Content-Type": "application/json;odata=verbose",  
13.             "X-RequestDigest": $("#__REQUESTDIGEST").val(),  
14.             "IF-MATCH": "*",  
15.             "X-HTTP-Method": null  
16.         },  
17.         cache: false,  
18.         success: function(data)   
19.         {  
20.             $("#ResultDiv").empty();  
21.             for (var i = 0; i < data.d.results.length; i++)   
22.             {  
23.                 var item = data.d.results[i];  
24.                 $("#ResultDiv").append(item.Company + "\t" + item.Industry + "<br/>");  
25.             }  
26.         },  
27.         error: function(data)  
28.         {  
29.             $("#ResultDiv").empty().text(data.responseJSON.error);  
30.         }  
31.     });  
32. }  

Create list item



Here is the main code in detail:

1. function AddListItem()  
2. {  
3.     var industryVal = $("#Industry").val();  
4.     var Company = $("#Company").val();  
5.     $.ajax  
6.         ({  
7.         url: _spPageContextInfo.webAbsoluteUrl + "/_api/web/lists/GetByTitle('companyInfo')/items",  
8.         type: "POST",  
9.         data: JSON.stringify  
10.         ({  
11.             __metadata:  
12.             {  
13.                 type: "SP.Data.TestListItem"  
14.             },  
15.             Company: Company,  
16.             Industry: industryVal  
17.         }),  
18.         headers:  
19.         {  
20.             "Accept": "application/json;odata=verbose",  
21.             "Content-Type": "application/json;odata=verbose",  
22.             "X-RequestDigest": $("#__REQUESTDIGEST").val(),  
23.             "X-HTTP-Method": "POST"  
24.         },  
25.         success: function(data, status, xhr)  
26.         {  
27.             retriveListItem();  
28.         },  
29.         error: function(xhr, status, error)  
30.         {  
31.             $("#ResultDiv").empty().text(data.responseJSON.error);  
32.         }  
33.     });  
34. }  

Update list item



Here is the main code in detail:

1. function updateListItem()  
2. {  
3.     var industryVal = $("#Industry").val();  
4.     $.ajax  
5.     ({  
6.         url: _spPageContextInfo.webAbsoluteUrl + "/_api/web/lists/GetByTitle('companyInfo')/items(7)", // list item ID  
7.         type: "POST",  
8.         data: JSON.stringify  
9.         ({  
10.             __metadata:  
11.             {  
12.                 type: "SP.Data.TestListItem"  
13.             },  
14.             Industry: industryVal  
15.         }),  
16.         headers:  
17.         {  
18.             "Accept": "application/json;odata=verbose",  
19.             "Content-Type": "application/json;odata=verbose",  
20.             "X-RequestDigest": $("#__REQUESTDIGEST").val(),  
21.             "IF-MATCH": "*",  
22.             "X-HTTP-Method": "MERGE"  
23.         },  
24.         success: function(data, status, xhr)  
25.         {  
26.             retriveListItem();  
27.         },  
28.         error: function(xhr, status, error)  
29.         {  
30.             $("#ResultDiv").empty().text(data.responseJSON.error);  
31.         }  
32.     });  

Delete list item



Here is the main code in detail:

1. function deleteListItem()  
2. {  
3.     $.ajax  
4.     ({  
5.         url: _spPageContextInfo.webAbsoluteUrl + "/_api/web/lists/GetByTitle('companyInfo')/items(7)",  
6.         type: "POST",  
7.         headers:  
8.         {  
9.             "X-RequestDigest": $("#__REQUESTDIGEST").val(),  
10.             "IF-MATCH": "*",  
11.             "X-HTTP-Method": "DELETE"  
12.         },  
13.         success: function(data, status, xhr)  
14.         {  
15.             retriveListItem();  
16.         },  
17.         error: function(xhr, status, error)  
18.         {  
19.             $("#ResultDiv").empty().text(data.responseJSON.error);  
20.         }  
21.     });  
22. }  

Summary

In this article, we explored SharePoint 2013 REST API for (CRUD) operations on list items level. I’ve tried to explore crud operation using REST Services, JavaScript Client Side Object Model, and SOAP Services to work on the client-side.