Edit Question - KnowledgeHub

Title Body

I'm very new to Grails so there's probably a very simple answer to this question. I'm trying to display a dynamically created image in a gsp. The image is NOT stored in a database, it's created on the fly in the controller. What I essentially have is one gsp that has a form which takes in a set of user inputs (requestGraph.gsp). Upon submitting the form, the parameters are sent to the a displayGraph action in the controller which queries information from a database completely outside of Grails and creates a chart using the JFreeChart library. I would like to display this image within a displayGraph.gsp or something like that. So basically within requestGraph.gsp I have a snippet similar to: <g:form action="displayGraph">  <g:submitButton name="displayGraph" value="Display Graph" /> </g:form> Within the controller I have something like: def requestGraph = {} def displayGraph = { //... code that uses params to make an image byte array and assigns to var img return [image : img] } Within displayGraph.gsp: <body> <h1>Graph Title</h1>  </body> I tried piping the image directly to the output stream in the displayGraph action. This works, but then I lose control of all page formatting in displayGraph.gsp. Most tutorials I've found create a dedicated action to pipe the image to an output steam then call that action using a tag. The problem is that my image isn't stored in a database and I see no way of passing the image byte array (or even the form parameters) to create/render the image. Can anybody help me with this? Thanks.

Tags (comma-separated) Cancel