This post will show how to use Groovy's -e command line option. The Groovy command line tool provides an interactive console to help you learn the Groovy Language. The Groovy -e option is very useful as it gives a quick way for executing simple Groovy scripts.
This will show examples on how to use the Grails findAll tag(<g:findAll>). This tag is similar to each tag and uses the Groovy JDK findAll method to iterate over each element of a collection and only renders the body if the attribute "expr" is evaluated to true.
This will show examples on how to use the Grails join tag (<g:join>). This tag utilizes the Groovy join method to concatenate the toString() representation of each item in a list or collection. A custom separator can also be used for this tag.
We could use Grails criteria projections when we want to select which properties or column to include in the query result. This post will show examples on how to use projections when working with Grails criteria to search for records in the database.