using grails and google app engine to store image as blob and the view dynamically
- by mswallace
I am trying to dynamically display an image that I am storing in the google datastore as a Blob. I am not getting any errors but I am getting a broken image on the page that I view.
Any help would be awesome!
I have the following code in my grails app
domain class has the following
@PrimaryKey
@Persistent(valueStrategy = IdGeneratorStrategy.IDENTITY)
Long id
@Persistent
String siteName
@Persistent
String url
@Persistent
Blob img
@Persistent
String yourName
@Persistent
String yourURL
@Persistent
Date date
static constraints = {
id( visible:false)
}
My save method in the controller has this
def save = {
params.img = new Blob(params.imgfile.getBytes())
def siteInfoInstance = new SiteInfo(params)
if(!siteInfoInstance.hasErrors() ) {
try{
persistenceManager.makePersistent(siteInfoInstance)
} finally{
flash.message = "SiteInfo ${siteInfoInstance.id} created"
redirect(action:show,id:siteInfoInstance.id)
}
}
render(view:'create',model:[siteInfoInstance:siteInfoInstance])
}
My view has the following
<img src="${createLink(controller:'siteInfoController', action:'showImage', id:fieldValue(bean:siteInfoInstance, field:'id'))}"></img>
and the method in my controller that it is calling to display a link to the image looks like this
def showImage = {
def site = SiteInfo.get(params.id)// get the record
response.outputStream << site.img // write the image to the outputstream
response.outputStream.flush()
}
