我已经更改了 grails 项目中的 src/templates/scaffolding/renderEditor.template 文件，以便在所有“多对”关系中插入必要的 html 字段框（和 javascript 代码）来配置和使用 jquery 自动完成一”。（代码如下所示）
自动生成的自动完成（_form.gsp）工作正常......但是当用户使用脚手架编辑记录时，我需要在自动完成文本框中显示正确的值（代码和描述）。
为此，我需要识别域内的两个字段：一个用于代码，另一个用于描述。
面对这个问题，我尝试创建两个虚拟约束，使用插件“约束”，第一个用作代码，第二个用作描述。我不喜欢这个解决方案，因为约束可以在域中多次使用。
更改为 src/templates/scaffolding/renderEditor.template 文件的代码如下：（注意两个输入框和用于自动完成的 Javascript 代码）：
private renderManyToOne(domainClass, property) {
if (property.association) {
/* ORIGINAL CODE inside comments
def sb = new StringBuilder()
sb << '<g:select'
// id is "x" and name is "x.id" as the label will have for="x" and "." in an id will confuse CSS
sb << ' id="' << property.name << '"'
sb << ' name="' << property.name << '.id"'
sb << ' from="${' << property.type.name << '.list()}"'
sb << ' optionKey="id"'
if (isRequired()) sb << ' required=""'
sb << ' value="${' << "${domainInstance}?.${property.name}" << '?.id}"'
sb << ' class="many-to-one"'
sb << renderNoSelection(property)
sb << '/>'
sb as String
*/
def sb = new StringBuilder()
// hidden field for domain.id
sb << '<input type=\"hidden\" '
sb << ' id="' << property.name << '.id"'
sb << ' name="' << property.name << '.id"'
sb << ' value="${' << "${domainInstance}" << '?.id}" '
sb << '/>\n'
// Text field to show the description generated by autocomplete
sb << '\t<input type=\"text\" '
sb << ' id="' << property.name << '"'
sb << ' name="' << property.name << '"'
if (isRequired()) sb << ' required="" '
sb << 'style=\"width: 600px;\" '
sb << ' value="${' << "${domainInstance}?.${property.name}" << '?.id}"'
// sb << '${' << "${property.name}" << '"'
sb << '/>'
def js = new StringBuilder()
js << '''
<script type="text/javascript">
/*
* Remember include jquery and jquery-ui libraries into head section of edit.gsp file
* < g:javascript library="jquery"/>
* < g:javascript library="jquery-ui"/>
*/
\$(document).ready(function() {
'''
js << '\t\$("#' << property.name << '").focus(function(){this.select(); });\n'
js << '\t\t$("#' << property.name << '").autocomplete({\n'
js << '''
source: function(request, response){
\$.ajax({
// Define Remote datasource into the controller
'''
js << ' \t\t url: "'
js << '/' << grails.util.Metadata.current.'app.name' << '/' << property.name << '/' << 'autoCompleteList",'
js << '''
data: request,
success: function(data){
// Get the response (JSON format)
response(data);
},
error: function(){
// Handle server errors
response("Error after search records. Try Again.")
}
});
},
// General options: Triggered only after minimum 2 characters have been entered and others
minLength: 2,
delay: 1,
autoFocus: true,
// Event handler when user selects a Loinc from the list.
select: function(event, ui) {
// update the hidden field.
'''
js << '\t\t\t\t \$("#' << property.name << '\\.id").val(ui.item.id);'
js << '''
}
});
});
</script>
'''
sb << js
sb as String
}
使用虚拟约束（autoid 和 autodesc）的域：
class LOINC {
static searchable = {
only = ["code", "shortName", "longName", "property", "system", "scale", "method", "time"]
}
String code // LOINC_NUM * 0
String shortName // SHORTNAME * 29
String longName // LONG_COMMON_NAME * 35
String name // BASE_NAME * 21
String component // COMPONENT * 1
String property // PROPERTY * 2
String time // TIME_ASPCT * 3
String system // SYSTEM * 4
String scale // SCALE_TYP * 5
String method // METHOD_TYP * 6
static constraints = {
code(nullable: false, unique: true, blank: false, maxSize: 100, autoid: true)
shortName(nullable: false)
longName(nullable: false, autodesc: true)
name(nullable: false, maxSize: 100)
component(nullable: false)
property(nullable: false)
time(nullable: false)
system(nullable: false)
scale(nullable: false)
method(nullable: false)
}
String toString(){
"${code} ${longName}"
}
}
控制器内部的代码：
def autoCompleteList = {
def loincAutoCompleteService = new LOINCAutoCompleteService()
render loincAutoCompleteService.loincList(params) as JSON
}
服务：
class LOINCAutoCompleteService {
def loincList(params) {
// Creates a new query Object
def query = {
or {
like("code", "${params.term}%") // term is the parameter send by jQuery autocomplete
like("longName", "${params.term}%")
like("shortName", "${params.term}%")
}
projections { // good to select only the required columns.
property("id")
property("code")
property("longName")
}
}
def loincSelectList = [] // aArray List to add each Loinc details
def clist = LOINC.createCriteria().list(query)
clist.each {
// Add to map. jQuery autocomplete expects the JSON object to be with id/label/value
def loincMap = [:]
loincMap.put("id", it[0])
// Label is text showed int he drop-down list
loincMap.put("label", it[1] + " : " + it[2])
// Values is the code to be returned when the user select an item from drop-down list
loincMap.put("value", it[1] + " : " + it[2])
// Add the row to the array list
loincSelectList.add(loincMap)
}
return loincSelectList
}
}
我想要在域类中类似的东西：
<code>
static autocompleteAble = {
fields = ["code", "longName"]
}
</code>
然后从 src/templates/scaffolding/renderEditor.template 访问该数组，以获取字段名称（代码和 longName）并在 _forms.gsp 中生成正确的 html 代码并修复问题。
其他解决方案？有任何想法吗？
提前谢谢了。...原谅我的英语不好。