In your SharePoint Framework solutions, you will likely want to interact with data stored in SharePoint. PnPjs offers a fluent api used to call the SharePoint rest services. This article outlines what options you have, how they work and what their advantages.
Create a new web part project
Open power shell and run following comment to create a new web part by running the Yeoman SharePoint Generator
yo @microsoft/sharepointWhen prompted:
Enter the webpart name as your solution name, and then select Enter.
Select Create a subfolder with solution name for where to place the files.
Select Y to allow the solution to be deployed to all sites immediately.
Select N on the question if solution contains unique permissions.
Select WebPart as the client-side component type to be created.
The next set of prompts ask for specific information about your web part:
Enter your web part name, and then select Enter.
Enter your web part description, and then select Enter.
Select React framework as the framework you would like to use, and then select Enter.
Start Visual Studio Code (or your favorite code editor) within the context of the newly created project folder.
cd .\Simple_List_Operations\
code .Install the library and required dependencies
npm install @pnp/sp --saveImport the library into your application, update constructor, and access the root sp object in render for PnPjs libraries
sp.setup({
spfxContext: this.props.spcontect
});
Configure the custom properties
Create a new source code file under the src\webparts\simpleListOperations\components\ folder of the solution. Call the new file ISimpleListOperationsState.ts and use it to create a TypeScript Interface
export interface ISimpleListOperationsState {
addText: string;
updateText:IListItem[];
}
and one more in the same file
export interface IListItem {
id: number;
title: string;
}
In addition, you need to update the render method of the client-side web part to create a properly configured instance of the React component for rendering. The following code shows the updated method definition.
public render(): void {
const element: React.ReactElement<ISimpleListOperationsProps> = React.createElement(
SimpleListOperations,
{
description: this.properties.description,
spcontext: this.context
}
);
ReactDom.render(element, this.domElement);
}
Update the SimpleListOperations.tsx file. First, add some import statements to import the types you defined earlier. Notice the import for ISimpleListOperationsProps, ISimpleListOperationsState and IListItem. There are also some imports for the Office UI Fabric components used to render the UI of the React component and pnp sp imports.
import * as React from 'react';
import styles from './SimpleListOperations.module.scss';
import { ISimpleListOperationsProps } from './ISimpleListOperationsProps';
import { ISimpleListOperationsState, IListItem } from './ISimpleListOperationsState';
import { TextField, DefaultButton, PrimaryButton, Stack, IStackTokens, IIconProps } from 'office-ui-fabric-react/lib/';
import { Environment, EnvironmentType } from '@microsoft/sp-core-library';
import { autobind } from 'office-ui-fabric-react/lib/Utilities';
import { sp } from "@pnp/sp";
import "@pnp/sp/webs";
import "@pnp/sp/lists";
import "@pnp/sp/items";
import { IItemAddResult } from "@pnp/sp/items";
After the imports, define the icon for button component of Office UI Fabric
const stackTokens: IStackTokens = { childrenGap: 40 };
const DelIcon: IIconProps = { iconName: 'Delete' };
const ClearIcon: IIconProps = { iconName: 'Clear' };
const AddIcon: IIconProps = { iconName: 'Add' };
Replace this component with the following code.
public render(): React.ReactElement<ISimpleListOperationsProps> {
return (
<div className={styles.simpleListOperations}>
<div className={styles.container}>
<div className={styles.row}>
<div className={styles.column}>
{this.state.updateText.map((row, index) => (
<Stack horizontal tokens={stackTokens}>
<TextField label="Title" underlined value={row.title} onChanged={(textval) => { row.title = textval }} ></TextField>
<PrimaryButton text="Update" onClick={() => this._updateClicked(row)} />
<DefaultButton text="Delete" onClick={() => this._deleteClicked(row)} iconProps={DelIcon} />
</Stack>
))}
<br></br>
<hr></hr>
<label>Create new item</label>
<Stack horizontal tokens={stackTokens}>
<TextField label="Title" underlined value={this.state.addText} onChanged={(textval) => this.setState({ addText: textval })} ></TextField>
<PrimaryButton text="Save" onClick={this._addClicked} iconProps={AddIcon} />
<DefaultButton text="Clear" onClick={this._clearClicked} iconProps={ClearIcon} />
</Stack>
</div>
</div>
</div>
</div>
);
}
Update the React component type declaration and add a constructor, as shown in the following example.
constructor(prop: ISimpleListOperationsProps, state: ISimpleListOperationsState) {
super(prop);
this.state = {
addText: '',
updateText: [],
};
sp.setup({
spfxContext: this.props.spcontext
});
if (Environment.type === EnvironmentType.SharePoint) {
this._getListItems();
}
else if (Environment.type === EnvironmentType.Local) {
// return (<div>Whoops! you are using local host...</div>);
}
}
place the below code after the react component code, these functions using PnPjs to get the data, create list items, update list item and delete the list item.
async _getListItems() {
const allItems: any[] = await sp.web.lists.getByTitle("Colors").items.getAll();
console.log(allItems);
let items: IListItem[] = [];
allItems.forEach(element => {
items.push({ id: element.Id, title: element.Title });
});
this.setState({ updateText: items });
}
@autobind
async _updateClicked(row: IListItem) {
const updatedItem = await sp.web.lists.getByTitle("Colors").items.getById(row.id).update({
Title: row.title,
});
}
@autobind
async _deleteClicked(row: IListItem) {
const deletedItem = await sp.web.lists.getByTitle("Colors").items.getById(row.id).recycle();
this._getListItems();
}
@autobind
async _addClicked() {
const iar: IItemAddResult = await sp.web.lists.getByTitle("Colors").items.add({
Title: this.state.addText
});
this.setState({ addText: '' });
this._getListItems();
}
@autobind
private _clearClicked(): void {
this.setState({ addText: '' })
}
Deploy the solution
You’re now ready to build, bundle, package, and deploy the solution.
Run the gulp commands to verify that the solution builds correctly.
gulp buildUse the following command to bundle and package the solution.
gulp bundle --ship
gulp package-solution --shipBrowse to the app catalog of your target tenant and upload the solution package. You can find the solution package under the sharepoint/solution folder of your solution. It is the .sppkg file. After you upload the solution package in the app catalog. you can find and the web part anywhere across the tenant.
Sharing is caring!
If you have any questions, feel free to let me know in the comments section.
Happy coding!!!
Ravichandran Blog 