Developing an Application

Display an Image

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OutSystems allows displaying different types of images in your applications such as static images, external images fetched from URLs, and images stored in the database.

To display a database image in a mobile app:

Add an aggregate to fetch the image from the database to the screen where you want to display it;
Drag the Image widget from the toolbox to the screen;
Set the property Type to Binary Data;
Set the property Image Content as the entity attribute that stores the image.

To display a database image in a web app:

Add an aggregate fetching the image from the database to the preparation action of the screen where you want to display it;
Drag the Image widget from the toolbox to the screen;
Select an existing image resource or import a new image as an image default. This image is used as a placeholder during design time and as default during runtime;
Select the image and change its property Type to Database;
Set the Attribute property to an entity attribute of type Binary Data that stores the image in the database;
Set the Filename property to the name of the file when the end-user saves the image;
Set the Entity Identifier property to the identifier of the specific entity record that contains the image to display.

Example in a Mobile App

In GoOut, a mobile application for finding and reviewing places, we want to display the end-user’s photo next to the detail.

To display the end-user's profile image:

Open the Profile screen and drag an Image widget from the toolbox to the top of the form with the details of an end-user;
Set the Type property to Binary Data ;
Set the Image Content property to GetProfile.Profile.Profile.Photo, which is the Photo attribute of the GetProfile aggregate that fetches the end-user profiles;
Set the Default Image property to a generic avatar image which the application will display as default if the end-user does not have a profile photo;
Publish and test.

Example in a Web App

In the GoOutWeb application, a web application for finding and reviewing places, we want to display the photo of the end-users next to their personal details in the screen Profile.

To display a database image:

Open the Profile screen and drag an Image widget from the toolbox to the top of the form that edits the end-users details;
On the Select Image dialog, select an image already imported into the module or import a new one to be used as a default image. This image is used as a placeholder during design time and as fallback during runtime;
Set the Type property to Database;
Set the Attribute property to Profile.Photo, which is the attribute storing the photo of the end-users in the Profile entity;
Set the Filename property to GetProfileById.List.Current.User.Name + “.png” to define the image filename as the name of the end-user being edited;
Set the Entity Identifier property to the ProfileId input parameter that identifies the Profile record for the current end-user;
Publish and test.