Miscellaneous Questions (Image upload, Default value, attribute editability)

Support
#1

Hi,

I am about to complete my first application using Cuba Platform. However, I am stuck at the following and need working sample code for each.

  1. Image upload - User is going to upload multiple files (images, pdfs, excel, word docs). The link for each attachment is created for downloading it.

  2. Set default value (initial value) of a dropdown - The dropdown contains value from Enumeration class

  3. Attribute (field) editability - A field should become enabled/disabled for editing depending on boolean value of some other field.

Pointers to any sample working examples would be great.

Thanks

#2

Hi,

  1. For the multiple files uploading use FileMultiUploadField component
  2. To set a default value for any Entity attribute use initNewItem() method in the edit screen controller. So, if your enum attribute is associated with the Entity, you should write a piece of code similar to this one

@Overrideprotected void initNewItem(People item) {    item.setRole(RoleType.STANDARD);}

If you have a component which is not connected to datasource, you can use setValue() method in the screen controller


<i>@Injectprivate LookupField lookupField;@Overridepublic void init(Map<String, Object> params) {    lookupField.setValue(RoleType.DENYING);}</i>
  1. Every Filed component has ValueChangeListener which can be added by addValueChangeListener() method. To switch editable state use setEditable() method.
    For more detailed information create separate topics with a more detailed description for each question, because it will be more convenient to other users with the similar questions.