• Head over to the database section in Adalo and create a new collection for your coupons.
• Click on "Add Collection" and name it "Coupons".
• Add properties to this collection like:
• Code (text) - to store the coupon code.
• Discount (number) - to store the discount value.
• IsUsed (boolean) - to track if the coupon has been used.
• Any other relevant properties like ExpiryDate (date).

• Add a new screen and call it "Generate Coupon".
• Add inputs for any parameters you want users to specify (e.g., discount amount).
• Add a button and set its action to create a new record in the Coupons collection.
• Configure the action to fill the record with appropriate values, including generating a unique coupon code.

• In the action configured to create a new coupon record, use a custom formula to generate a unique coupon code.
• Adalo doesn't have built-in support for complex algorithms, but simple codes can be generated using predefined sets of characters.
• Example formula for a random string: RNDSTR(6) which generates a random string of 6 characters. Alternatively, an external service or custom action might be needed for more complex codes.

• After the coupon is generated, navigate the user to a new screen where the newly created coupon details are displayed.
• Use a text component to display the Code from the newly created coupon record.

• Create a second screen for users to input and validate their coupon.
• Add a text input for the coupon code.
• Add a button to trigger the validation process.
• Set the button action to search the Coupons collection for a record that matches the inputted code and has IsUsed set to false.
• If found, display the coupon details (e.g., discount value) and mark the coupon as used by updating the IsUsed property.

• As part of the validation step, include an action that updates the related coupon record to mark it as used.
• This ensures that the coupon cannot be reused.

• Add conditional visibility settings to show success or error messages based on whether a valid coupon was found and marked as used.
• For example, show a "Coupon Valid" message if the coupon is successfully applied and marked as used, or an "Invalid/Expired Coupon" message if no valid coupon is found.

• Thoroughly test the entire flow from coupon generation to validation.
• Ensure that duplicate codes are not generated and that used coupons cannot be reused.
• Test edge cases such as invalid inputs and expired coupons.

This guide provides a detailed, step-by-step approach to creating a custom coupon generator within Adalo, focusing on practical implementation and ensuring all relevant use cases are covered.