Using Thymeleaf when the value is null

Question

I have some values in my database which can be null if they have not already been entered   But when I use Thymeleaf in my html  it gives an error when parsing null values   Is there any way to handle this

User · Answer

I use    lt div th text     variable    null       variable            variable     empty string message      null message    gt  lt  div gt

User · Answer

Sure there is  You can for example use the conditional expressions  For example    lt span th text    someObject someProperty    null      someObject someProperty     null value    gt someValue lt  span gt    You can even omit the  else  expression    lt span th text    someObject someProperty    null      someObject someProperty   gt someValue lt  span gt    You can also take a look at the Elvis operator to display default values

User · Answer

lt p data-th-text      strings defaultString yourNullable  defaultValueIfYourValueIsNull     gt  lt  p gt

User · Answer

This can also be handled using the elvis operator    which will add a default value when the field is null    lt span th text    object property      default value   gt  lt  span gt

User · Answer

Also worth to look at documentation for  objects build-in helper  https   www thymeleaf org doc tutorials 2 1 usingthymeleaf html objects  There is useful     objects nullSafe obj  default

User · Answer

You can use  th if  together with  th text    lt span th if    someObject someProperty    null   th text    someObject someProperty   gt someValue lt  span gt

User · Answer

The shortest way is using     operator  If you have User entity with embedded Address entity in order to access fields of Address entity and print them if address is not null  otherwise here will be an empty column    lt td th text    user  address  city   gt  lt  td gt

User · Answer

You ve done twice the checking when you create     someObject someProperty    null      someObject someProperty    You should do it clean and simple as below     lt td th text    someObject someProperty      someObject someProperty     null value    gt  lt  td gt

User · Answer

you can use this solution it is working for me   lt span th text     objects nullSafe doctor  cabinet  name       gt  lt  span gt

User · Answer

The shortest way  it s working for me  Where NA is my default value   lt td th text  quot   ins eValue  null     ins eValue   NA  quot    gt

[html] Using Thymeleaf when the value is null

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