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Below a possible comprehensive approach .

Implementing Image Storage and Display in Constellation

To save ship images to the database when users upload them and then display those images back to users, you'll need to follow these steps:

1. Create a Binary File Property in the Data Model

First, you'll need to add a field to your case type's data model to store the image:

• In App Studio, navigate to your ship case type
• Click on the 'Data Model' tab
• Click 'Add field' and select 'Binary File' as the field type
• Name the field appropriately (for example, 'ShipImage')
• Save your changes

The Binary File property type is specifically designed for storing images and other binary content in Pega, making it ideal for your ship images.

2. Configure the File Upload Component

Next, you'll need to add and configure a file upload component in your view:

• Go to the 'Views' tab of your case type
• Select the view where users will upload ship images
• Drag and drop the 'File Upload' component from the component palette
• In the properties panel, bind this component to your 'ShipImage' property
• Configure additional settings such as:
  • Allowed file types (e.g., .jpg, .png, .gif)
  • Maximum file size
  • Helper text to guide users on upload requirements
• Save your changes

3. Save the Image to the Database

When users upload an image through the file upload component, Pega Constellation handles most of the underlying work:

• The file upload component automatically processes the binary data
• The image is saved to your case data when the case is saved
• No additional flow actions are typically needed for basic image storage

If you need more complex handling, you can create a data page that references the Binary File class or add specific steps in your flow to process the image after upload.

4. Display the Image to Users

To display the saved ship images:

• In the view where you want to show the image, add an 'Image' component from the palette
• Bind this component to your 'ShipImage' property
• Pega automatically generates a URL to access the binary file
• The image will be rendered in the UI when the view is loaded
• Save your changes

Best Practices for Image Handling

• Validation: Always validate uploaded files to ensure they are valid image formats and within size limitations
• Thumbnails: Consider implementing thumbnails for better performance if you're displaying multiple ship images
• Image Optimization: Large images can impact performance, so consider adding logic to resize or compress images if needed
• Error Handling: Add appropriate error handling for cases where image uploads fail or images are corrupted

This implementation approach will allow your users to upload ship images when adding new ships to your case type and will display those images when viewing the case details.