Angular CRUD operation helper service for sharepoint

Here we have some beautiful Angular Factory class Which help's us in any crud operation For Rest API in sharepoint

    "use strict";
    (function () {
        angular.module("docapp")
            .factory("baseSvc", ["$http", "$q", function ($http, $q) {
                var baseUrl = _spPageContextInfo.siteAbsoluteUrl;
                var getRequest = function (query) {
                    var deferred = $q.defer();
                    $http({
                        url: baseUrl + query,
                        method: "GET",
                        headers: {
                            "accept": "application/json;odata=verbose",
                            "content-Type": "application/json;odata=verbose"
                        }
                    })
                        .success(function (result) {
                            deferred.resolve(result);
                        })
                        .error(function (result, status) {
                            deferred.reject(status);
                        });
                    return deferred.promise;
                };
                var postRequest = function (data, url) {
                    var deferred = $q.defer();
                    $http({
                        url: baseUrl + url,
                        method: "POST",
                        headers: {
                            "accept": "application/json;odata=verbose",
                            "X-RequestDigest": document.getElementById("__REQUESTDIGEST").value,
                            "content-Type": "application/json;odata=verbose"
                        },
                        data: JSON.stringify(data)
                    })
                        .success(function (result) {
                            deferred.resolve(result);
                        })
                        .error(function (result, status) {
                            deferred.reject(status);
                        });
                    return deferred.promise;
                };
                var updateRequest = function (data, url) {
                    var deferred = $q.defer();
                    $http({
                        url: baseUrl + url,
                        method: "PATCH",
                        headers: {
                            "accept": "application/json;odata=verbose",
                            "X-RequestDigest": document.getElementById("__REQUESTDIGEST").value,
                            "content-Type": "application/json;odata=verbose",
                            "X-Http-Method": "PATCH",
                            "If-Match": "*"
                        },
                        data: JSON.stringify(data)
                    })
                        .success(function (result) {
                            deferred.resolve(result);
                        })
                        .error(function (result, status) {
                            deferred.reject(status);
                        });
                    return deferred.promise;
                };
                var deleteRequest = function (url) {
                    var deferred = $q.defer();
                    $http({
                        url: baseUrl + url,
                        method: "DELETE",
                        headers: {
                            "accept": "application/json;odata=verbose",
                            "X-RequestDigest": document.getElementById("__REQUESTDIGEST").value,
                            "IF-MATCH": "*"
                        }
                    })
                        .success(function (result) {
                            deferred.resolve(result);
                        })
                        .error(function (result, status) {
                            deferred.reject(status);
                        });
                    return deferred.promise;
                };
                return {
                    getRequest: getRequest,
                    postRequest: postRequest,
                    updateRequest: updateRequest,
                    deleteRequest: deleteRequest
                };
            }]);
    })();

Ok How do we use it then ?

Answer is very simple. Just make another factory class accoding to your business logic

    (function () {
        'use strict';
        var app = angular.module('docapp');
        app.factory("taskSvc", ["baseSvc", function (baseService) {
            var listEndPoint = '/_api/web/lists/';
            var getAll = function () {
                var query = listEndPoint + "GetByTitle('Asana2')/Items?$select=Title,Category,ID,PriorityCod,Desc2,AssignedTo&$filter=Status ne 'compleated'";
                return baseService.getRequest(query);
            };

            var getTaskByUser = function (userID) {
                var query = listEndPoint + "GetByTitle('Asana2')/Items?$select=Title,Category,ID,PriorityCod,Desc2,AssignedTo&$filter=Status ne 'compleated' and AssignedTo eq '"+userID+"'";
                return baseService.getRequest(query);
            };

            var getCommentsById = function (ID) {
                var query = listEndPoint + "GetByTitle('Activities')/Items?$select=TaskID,ActivityType,Cmnt,ID,EntryDate,UserCmnt,ProfilePic&$filter=ActivityType eq '2' and TaskID eq " + ID + "";

                return baseService.getRequest(query);
            }
            var addNewTask = function (tsk) {
                var data = {
                    __metadata: { 'type': 'SP.Data.Asana2ListItem' },
                    Title: tsk.Title,
                    PriorityCod: tsk.PriorityCod.toString(),
                    Category:  tsk.CategoryCode.toString(),
                    Desc2: tsk.Description,
                    AssignedTo: tsk.AssignedUserId.toString()
                };

                //console.log(tsk.AssignedUserId);
                var url = listEndPoint + "GetByTitle('Asana2')/Items";
                return baseService.postRequest(data, url);
            };
            var updatePriority = function (updatePriorityTsk) {
                var data = {
                    __metadata: { 'type': 'SP.Data.Asana2ListItem' },
                    PriorityCod: updatePriorityTsk.PriorityCod.toString(),
                };
                var url = listEndPoint + "/GetByTitle('Asana2')/GetItemById(" + updatePriorityTsk.ID + ")";
                return baseService.updateRequest(data, url);
            };

            var updateUser = function (updateUserTsk) {
                var data = {
                    __metadata: { 'type': 'SP.Data.Asana2ListItem' },
                    AssignedTo: updateUserTsk.AssignedTo,
                };
                var url = listEndPoint + "/GetByTitle('Asana2')/GetItemById(" + updateUserTsk.ID + ")";
                return baseService.updateRequest(data, url);
            };

            //var updatePriority = function (updatePriorityTsk) {
            //    var data = {
            //        __metadata: { 'type': 'SP.Data.Asana2ListItem' },
            //        PriorityCod: updatePriorityTsk.PriorityCod.toString(),
            //    };
            //    var url = listEndPoint + "/GetByTitle('Asana2')/GetItemById(" + updatePriorityTsk.ID + ")";
            //    return baseService.updateRequest(data, url);
            //};

            var updateCategory = function (updateCategoryTsk) {
                var data = {
                    __metadata: { 'type': 'SP.Data.Asana2ListItem' },
                    Category: updateCategoryTsk.Category.toString(),
                };
                var url = listEndPoint + "/GetByTitle('Asana2')/GetItemById(" + updateCategoryTsk.ID + ")";
                return baseService.updateRequest(data, url);
            };

            var updateDesc = function (updateDescTsk) {
                var data = {
                    __metadata: { 'type': 'SP.Data.Asana2ListItem' },
                    Desc2: updateDescTsk.Desc2.toString(),
                };
                var url = listEndPoint + "/GetByTitle('Asana2')/GetItemById(" + updateDescTsk.ID + ")";
                return baseService.updateRequest(data, url);
            };

            var updateTitle = function (updateTitleTsk) {
                var data = {
                    __metadata: { 'type': 'SP.Data.Asana2ListItem' },
                    Title: updateTitleTsk.Title.toString(),
                };
                var url = listEndPoint + "/GetByTitle('Asana2')/GetItemById(" + updateTitleTsk.ID + ")";
                return baseService.updateRequest(data, url);
            };

            var compleateTask = function (ID) {
                var data = {
                    __metadata: { 'type': 'SP.Data.Asana2ListItem' },
                    Status: 'compleated',
                };
                var url = listEndPoint + "/GetByTitle('Asana2')/GetItemById(" + ID + ")";
                return baseService.updateRequest(data, url);
            };


            var addNewActivities = function (comment) {
                var data = {
                    __metadata: { 'type': 'SP.Data.ActivitiesListItem' },
                   // Title:'title',
                    ActivityType: '2',
                    Cmnt: comment.Cmnt,
                    UserCmnt: comment.User,
                    ProfilePic: 'img/Users/ryan-301.jpg',
                    TaskID: comment.tskid.toString(),


                };
                var url = listEndPoint + "GetByTitle('Activities')/Items";
                return baseService.postRequest(data, url);
            };
        

            return {
                getAll: getAll,
                getCommentsById: getCommentsById,
                addNewTask: addNewTask,
                addNewActivities: addNewActivities,
                updatePriority: updatePriority,
                updateCategory: updateCategory,
                updateDesc: updateDesc,
                updateTitle: updateTitle,
                compleateTask: compleateTask,
                updateUser: updateUser,
                getTaskByUser: getTaskByUser
            };


        }]);

    })();

And now use like this below.

        $scope.GetContractMaster = function () {
            clauseSvc.getAll()
              .then(function (response) {
                  $scope.ContractMst.rowData = response.d.results;
                 
              });
        };

        $scope.updateUser = function () {
            $scope.updateUserTsk = {
                ID: $scope.comment.tskid,
                AssignedTo: $scope.TaskDtl.AllUsers,
            };

            taskSvc.updateUser($scope.updateUserTsk)
            .then(function (response) {
                $scope.getMyTask();
            });
        };

and so on ;) Cheers ;)