Dynamically Open Salesforce Files or ContentDocument In Lightning Component

Hi guys today in this post we are going to learn, how we can open or display a preview of contentDocument or salesforce files dynamically in salesforce lightning component using <lightning:fileCard> base component. A <lightning:fileCard> component displays a preview of a file (Image, Text, PDF…etc.). On desktops, clicking the file preview opens the SVG file preview player, enabling you to preview images, documents, and other files in the browser. The file preview player provides quick access to file actions, such as upload, delete, download, and share. On mobile devices, clicking the file preview downloads the file. The file type determines the icon used on the file preview and caption area.

So In this post we will create a component to display list of all available salesforce files records and on clicking on the file title we will display a preview of file.

Step 1. Apex Controller [fileViewerCtrl.apxc]

public class fileViewerCtrl {
    @AuraEnabled 
    public static List<contentDocument> fetchContentDocument(){
        return [Select id,Title,FileType,CreatedBy.Name,ContentSize From contentDocument LIMIT 1000];
    }
}

Step 2 : Lightning Component [filePreviewer.cmp]

<aura:component implements="force:appHostable,flexipage:availableForAllPageTypes,flexipage:availableForRecordHome,force:hasRecordId,forceCommunity:availableForAllPageTypes,force:lightningQuickAction"
                access="global"
                controller="fileViewerCtrl">
    <!--aura doInit handler--> 
    <aura:handler name="init" value="{!this}" action="{!c.doInit}"/>
    
    <!--aura attributes-->  
    <aura:attribute name="selectedDocumentId" type="string"/>
    <aura:attribute name="lstContentDoc" type="List"/>
    <aura:attribute name="hasModalOpen" type="boolean" default="false"/>
    
    <!-- Custom DataTable to Display List Of Available ContentDocuments Start-->  
    <table class="slds-table slds-table_cell-buffer slds-table_bordered">
        <thead>
            <tr class="slds-line-height_reset">
                <th class="slds-text-title_caps" scope="col">
                    <div class="slds-truncate" title="Title">Title</div>
                </th>
                <th class="slds-text-title_caps" scope="col">
                    <div class="slds-truncate" title="File Type">File Type</div>
                </th>
                <th class="slds-text-title_caps" scope="col">
                    <div class="slds-truncate" title="Created By">Created By</div>
                </th>
                <th class="slds-text-title_caps" scope="col">
                    <div class="slds-truncate" title="size">size(bytes)</div>
                </th>
            </tr>
        </thead>
        <tbody>
            <aura:iteration items="{!v.lstContentDoc}" var="CD">
                <tr>
                    <th scope="row">
                        <div class="slds-truncate" title="{!CD.Title}">
                            <!--store contentDocument Id in data-Id attribute-->
                            <a onclick="{!c.getSelected}" data-Id="{!CD.Id}">{!CD.Title}</a>
                        </div>
                    </th>
                    <th scope="row">
                        <div class="slds-truncate" title="{!CD.FileType}">{!CD.FileType}</div>
                    </th>
                    <th scope="row">
                        <div class="slds-truncate" title="{!CD.CreatedBy.Name}">{!CD.CreatedBy.Name}</div>
                    </th>
                    <th scope="row">
                        <div class="slds-truncate" title="{!CD.ContentSize}">{!CD.ContentSize}</div>
                    </th>
                </tr>  
            </aura:iteration>
        </tbody>
    </table>
    <!-- Custom DataTable to Display List Of Available ContentDocuments End-->  
    <!--###### FILE PREVIEW MODAL BOX START ######--> 
    <aura:if isTrue="{!v.hasModalOpen}">
        <section onclick="{!c.closeModel}"
                 role="dialog"
                 aria-modal="true"
                 class="slds-modal slds-fade-in-open">
            <div class="slds-modal__container">
                <div class="slds-modal__content slds-p-around_medium slds-text-align_center"
                     style="background: transparent;">
                    <div style="width: 50%; margin: 0 auto; text-align: left">
                        <!--<lightning:fileCard> to preview file using content document Id -->
                        <lightning:fileCard fileId="{!v.selectedDocumentId}"/>
                    </div>
                </div>
            </div>
        </section>
        <div class="slds-backdrop slds-backdrop_open"></div>
    </aura:if>
    <!--###### FILE PREVIEW MODAL BOX END ######-->
    
</aura:component>

JavaScript Controller : [filePreviewerController,js]

({
    /*call apex controller method "fetchContentDocument" to get salesforce file records*/
    doInit : function(component, event, helper) {
        var action = component.get("c.fetchContentDocument");
        action.setCallback(this, function(response) {
            var state = response.getState();
            if (state === "SUCCESS") {
                component.set('v.lstContentDoc', response.getReturnValue());
            }
            else if (state === "INCOMPLETE") {
                // do something
            }
                else if (state === "ERROR") {
                    var errors = response.getError();
                    if (errors) {
                        if (errors[0] && errors[0].message) {
                            console.log("Error message: " + 
                                        errors[0].message);
                        }
                    } else {
                        console.log("Unknown error");
                    }
                }
        });
        $A.enqueueAction(action);  
    },
    getSelected : function(component,event,helper){
        // display modle and set seletedDocumentId attribute with selected record Id   
        component.set("v.hasModalOpen" , true);
        component.set("v.selectedDocumentId" , event.currentTarget.getAttribute("data-Id")); 
        
    },
    closeModel: function(component, event, helper) {
        // for Close Model, set the "hasModalOpen" attribute to "FALSE"  
        component.set("v.hasModalOpen", false);
        component.set("v.selectedDocumentId" , null); 
    },
    
})

Opening the file preview player is supported in Lightning Experience, the Salesforce mobile web, and Lightning communities.

Steps To Add Lightning Components as Custom Tabs in a Lightning Experience App

Lightning Component Files Preview :

Related Resources :

• Lightning:fileCard
• Salesforce Files

Other popular Post :

• Create Modal/Popup Box In Lightning Component – Salesforce
• Add Multiple Child Records to Parent Object With Lightning Component
• Download Data as CSV File With JavaScript In Salesforce Lightning Component
• Custom File Upload In Salesforce Lightning Component – Upload Large Attachments
• Formula Fields to Display Images From Content Documents – Salesforce Lightning/Classic

Like our facebook page for new post updates. & Don’t forget to bookmark this site for your future reference.

if you have any suggestions or issue with it, you can post in comment box.

Happy Learning