This package contains a set of LWC components primarily dedicated to the display of custom lists of information (related records, KPIs, messages, fields...). They are based on some common powerful features required to easily customise the end-user experience (context information merge, action framework, apex logic extension).
These components were built as contributions/examples for former & ongoing Advisory assignments by Pierre-Emmanuel Gros, porting in LWC and optimising (for end-user performances and easier configuration mutualisation among page layouts) some components previously available in a former Aura component package (known as PEG Components not available on GitHub).
They heavily rely on standard Lightning framework features such as the Lightning Data Service (LDS) or the Lightning Message Service (LMS) and try to apply as much as possible the standard Salesforce Lightning Design System (SLDS). The goal was to make them appear as much as possible as standard native Salesforce platform components while overriding usual limitations of the standard platform.
Communities (Experience Cloud) are now supported and requires the Object API Name and the Record ID to be explicitly
set when configuring the components within Experience Cloud pages.
They are not available for Flow Designer but another package with components explicitly dedicated to these use cases is available (see PEG_FLW package).
As much attention as possible has been paid to internationalisation requirements (at least languages), leveraging standard mechanisms to translate labels, field names, picklist values...
This readme document provides an overview of the different elements available in the package as well as some general configuration guidelines and technical implementation principles.
As LWC does not provide embedded documentation for the components, this readme file provides links to component dedicated sub-pages providing detailed information about their configurations and various implementation examples. This applies to the different App Builder components, but some more technical ones are also described (e.g. merge utility). Direct links to these component help pages are also available in the component footers when activating debug mode.
For the few Aura components, you may have a look at their standard .auradoc and for Apex classes a
@ApexDoc like approach (with @description... tags) has been used.
Most components may also be embedded in other custom LWC components but these use cases are currently not documented for the time being. You may however look at the source code to see how to reuse some of them (main action bar component, or display or utility ones) or reach out to the author for more informations.
The package is freely available for use under the MIT license from this GiHub repository. Periodic upgrades will be posted depending on fixes/evolutions implemented as part of assignments & personal interactions. For now, all commits are made exclusively by the author.
You may easily deploy it to your Org via a simple SFDX deploy command from the project folder.
sfdx force:source:deploy -u yourOrgAlias -w 10 --verbose -p force-app
Beware when deploying new versions of the package on an Org having it already installed! If you have already customized on your Org the custom labels or static resources included in the package, you may need to retrieve first a copy of their current situations before the new package version deployment and redeploy them afterwards.
Please assign to your users the sfpegListUsage permission set provided in the package!
Otherwise component initialisations and data fetches will systematically fail as users will be denied any execution of Apex controller logic.
The PEG_LIST package provides a whole set of LWC components for the App Builder, as well as some Aura ones. They are summarized hereafter by use case with links to their dedicated description pages.
All these components rely on various configuration custom metadata also included in the package, the detail of which is provided here. They also heavily reuse two powerful features:
- context adaptation via the sfpegMergeUtl utility component
- global/row level action capabilities via the sfpegActionBarCmp component.
A main set of LWC components is available for use in Lightning App Builder:
- sfpegListCmp displays a contextualised and actionable list of records in 3 main formats (data table, data tree or tile list), data being retrieved via SOQL, Apex...
- sfpegMessageListCmp displays a conditional, contextualised and actionable list of end-user messages with customisable styles.
- sfpegKpiListCmp displays an actionable list of KPI field values in a structured and graphical way.
- sfpegProfileCmp displays an actionable graphical summary of a record, with various lists of fields
- sfpegCardCmp displays a structured card, with a custom set of fields / sections fetched/displayed via LDS (including edit capability), for the current or related (i.e. via lookups) record.
- sfpegCardListCmp enables to fetch a list of records (via a SOQL, Apex... query) and display a sfpegCardCmp for each one.
- sfpegRecordDisplayCmp displays data abouyt the current record in a structured way (headline section + sub-tabs), data being fetched either via LDS or SOQL (e.g. for Kbnowledge articles).
- sfpegActionBarCmp displays an button/menu bar component enabling to trigger a wide variety of actions, integrated within the previous list components but also available for standalone use in Lightning pages.
- sfpegActionTriggerCmp has no actual display but enables to trigger a specific action automatically upon instantiation (e.g. leveraging conditional display, it enables to enforce the user to execute a certain operation, such as opening an Edit popup, when opening the page).
Some additional components are available for use in the Lightning Utility bar
- sfpegActionHandlerCmp (LWC) is primarily the same as the sfpegActionBarCmp but displays a menu vertically from the utility bar and handles messages triggered by other components to execute actions from the utility bar instead of within tab (e.g. to enforce the console configuration when opening a page).
- sfpegActionUtilityCmp (Aura) is an Aura wrapper of sfpegActionHandlerCmp to handle a few additional actions & utility bar specific behaviours currently not possible from LWC: automatic closing of the utility menu upon action trigger, console tab operations (close all tabs, close tab and open another one...), custom/flow popup open... (Note: this component may be used in Community page footer as well)
There is a single Aura Addressable component available for use in navigation actions:
- sfpegListViewCmp enables to display the LWC sfpegListCmp component in a dedicated page (similarly to the list opened via the see all action on standard related lists).
Configuration is done at 2 levels:
- in the App Builder, to set simple high level configuration elements (such as card title & icon, debug mode activation...) and select one of the available detailed configuration records (see below)
- via custom metadata records, respectively to provide detailed configuration of the components (e.g. layouts, queries & actions to be used in the components), often containing complex JSON configuration stored in richtext fields.
Such an approach enables to easily reuse the same detailed configuration in multiple Lightning page layouts and enables a more efficient local configuration caching (for better performances).
The following example illustrate the configuration of the sfpegListCmp component in the App Builder, referencing 2 custom metadata records (orange zones) respectively for the data fetch/display configuration and for the header actions.
*Beware to add yourself (and all users accessing the components) the proper sfpegListUsage permission set
in order to access all the underlying Apex controller classes.
In the main property of most metadata records, context merge tokens may be used to dynamically set some values based on the applicable record(s) and user. See the sfpegMergeUtl for more details about the applicable syntax and all the possible tokens.
All custom metadata objects include a Scope property to define the pages for which the configuration record
is applicable, i.e. a set of space separated strings
GLOBALkeyword (for all pages),RECORDSkeyword (for all record pages)<ObjectApiName>(for a specific Salesforce Object)
This value is then taken into account by the Datasource Apex controllers to let the users only choose the appropriate records when cconfiguring a component in the App Builder.
Setting a Scope is optional, e.g. for sfpegAction__mdt records used as row actions of other component
metadata records (e.g. sfpegList__mdt).
Note: for Communities (Experience Cloud), the GLOBAL scope is mandatory for now, the scope not being
properly evaluated when rendering a record page (KNOWN ISSUE).
All App Builder components include Debug xxx ? properties to enable to display some configuration information
within the component (usually in its wrapping card footer) and activate debug logs within the browser console.
Debug ?applies only to the current componentDebug (fine) ?applies to all sub-components used within the component (e.g. the action bar or the merge utility).
On server side, all controllers have Apex debug logs implemented at various levels (error, warning, debug, fine...).
Hereafter are provided various technical details about the way the components have been implemented, which may help better understand their behaviours.
Most of the logic is implemented in LWC components.
However, in order to be able to leverage some interesting APIs or components not yet available in LWC
(workspaceAPI, overlayApi, utilityBarApi, flow...) or some behaviours not supported by LWC
(dynamic component instantiation via $A.createComponent()), some logic still had to be implemented
in the legacy Aura technology for various action types.
All this custom Aura logic has been centralised in the sfpegActionUtilityCmp component and its supporting sfpegFlowDsp component.
In order to optimise initialisation time of the different components, a 2 stage approach has been used:
- cacheable AuraEnabled Apex methods have been used to fetch custom metadata records (leveraging the standard Lightning cache)
- any fetched / parsed configuration is also stored in a static map variable per component (enabling to execute the initialisation only once and only fetch the missing elements or initialise the specific items)
This approach enables to dramatically reduce initialisation times when the same configuration is used in multiple pages. E.g. when opening Account pages
- the configuration is loaded first then all contextual data requested when opening the first Account page
- the configuration is reused and contextual data directly fetched when opening the later Account pages.
Lightning Data Service (via @wire methods or lightning-record-form components) is heavily used in the components to execute actions or fetch/display record data.
- It is used also to display input forms for mass actions (as temporary creation forms), although no LDS operation is actually executed, mass operations being done via DMLs.
- This works perfectly for all objects supported by LDS, usual exceptions being Task, Event and Knowledge for which DML actions are always required (unless opening the standard creation / edit pages)
- LDS updates are very useful as they automatically propagate to other components and avoid reloading/refreshing the page.
In order to integrate the action framework with custom LWC components, the Lightning Message Service has been leveraged to support bi-directional communication between components in this package and custom external logic. This mechanism relies on a set of message channels for inbound / outbound communication with the package components.
This mechanism is also used internally to communicate from a tab component to the utility sfpegActionHandlerCmp component via utility actions and may be used e.g. to propagate refresh requests to multiple sfpegListCmp components in a tab after an update action via notify actions.
In order to extend the standard capabilities made available in the package, an extension framework
(via virtual classes and forname() class instantiation) has been implemented to let developers
implement and integrate additional custom Apex logic.
This applies to the following features:
- actions (see sfpegAction__mdt configuration) leveraging the sfpegAction_SVC virtual class
- list queries (see sfpegList__mdt configuration) leveraging the sfpegListQuery_SVC virtual class
For component usage in Communities (Experience Cloud), 2 additional properties are displayed at the bottom of the component configuration panel in the Experience Builder:
recordIdto feed the ID of the current record (via the default{!recordId}value)objectApiNameto feed the Object API Name of the current record (via the default{!objectApiName}value)
Note: The {!objectApiName} value seems to be sometimes not valued when initializing the components. In order
to mitigate such issues, and if possible, a fixed test value (e.g. Account)is then preferrable.