我试图使用grails和jquery上传几个(一对多)图像。我一直在关注post,但到目前为止我做不到。问题是似乎一切正常,但是当您尝试保存图像(例如创建建筑物)时,它不会保存任何图像。
我认为,问题的关键在于文件类型(图像)的gsp参数。这些是到达我的 Controller 的参数:
[name:1,type:1,create:Crear,
imagesList [0] .data:org.springframework.web.multipart.commons.CommonsMultipartFile@d9278f,
imagesList [0]:data:org.springframework.web.multipart.commons.CommonsMultipartFile@d9278f],操作:保存, Controller :建筑物]
因此,我认为这些参数对我想做的事情是错误的。任何想法,或示例代码来解决这个问题?谢谢!
我在建筑物 Controller 中的save()方法
def save() {
def buildingInstance = new Building(params)
if (!buildingInstance.save(flush: true)) {
render(view: "create", model: [buildingInstance: buildingInstance])
return
}
flash.message = message(code: 'default.created.message', args: [message(code: 'building.label', default: 'Building'), buildingInstance.id])
redirect(action: "show", id: buildingInstance.id)
}
我的网域:
class Building {
def Integer type
def String name
List images = new ArrayList()
static hasMany = [images: Image]
static constraints = {
name()
type()
}
static mapping = {
images cascade:"all-delete-orphan"
}
def getImagesList() {
return LazyList.decorate(images,FactoryUtils.instantiateFactory(Image.class))
}
}
class Image {
def byte[] data
static belongsTo = [building: Building]
boolean deleted
static transients = [ 'deleted' ]
static constraints = { data(maxSize:10000000,required:true,blank:false) }
}
我的JSP:
_Images.jsp
<script type="text/javascript">
function addChild() {
var childCount = ${buildingInstance?.images.size()} + 0;
var htmlId = "image" + childCount;
var deleteIcon = "${resource(dir:'images/skin', file:'icon_delete.png')}";
var templateHtml = "<div id='" + htmlId + "' name='" + htmlId + "'>\n";
templateHtml += "<input type='file' id='imagesList[" + childCount + "].data' name='imagesList[" + childCount + "].data' />\n";
templateHtml += "<span onClick='$(\"#" + htmlId + "\").remove();'><img src='" + deleteIcon + "' /></span>\n";
templateHtml += "</div>\n";
$("#childList").append(templateHtml);
childCount++;
}
</script>
<div id="childList">
<g:each var="image" in="${buildingInstance.images}" status="i">
<!-- Render the image template (_image.gsp) here -->
<g:render template='image'
model="['image':image,'i':i,'hidden':false]" />
</g:each>
</div>
<input type="button" value="Add image" onclick="addChild();" />
_image.gsp
<div id="image${i}" class="image-div" <g:if test="${hidden}">style="display:none;"</g:if>>
<g:hiddenField name='imagesList[${i}].id' value='${image?.id}'/>
<g:hiddenField name='imagesList[${i}].deleted' value='false'/>
<input type="file" name="imagesList[${i}].data" value="${image?.data}" />
<span class="del-image">
<img src="${resource(dir:'images/skin', file:'icon_delete.png')}"
style="vertical-align:middle;"/>
</span>
</div>
最佳答案
我已经找到错误所在。只需将gps中的“imagesList”值更改为“images”作为域中的名称即可,它可以正常工作。我关注的帖子似乎有误。
关于jquery - 一对多的图像,我们在Stack Overflow上找到一个类似的问题: https://stackoverflow.com/questions/11424632/