我正在尝试在AngularJS中创建表单构建器。整个表单结构在JSON对象中定义,如下所示:
form = {
"title": "Some form title", // Title of the field
"fieldsets": [ // Each form is composed of several fieldsets
{
"title": "First fieldset", // Title of the fieldset
"fields": [ // Each fieldset is composed of several fields
{
"title": "First field", // Title of the field, displayed in a label
"type": "text" // Type of the field which determines which partial to load
},
{
"title": "Second field",
"type": "date"
},
]
},
{
"title": "Second fieldset",
"fields": [
{
"title": "First field",
"type": "text"
},
{
"title": "Second field",
"type": "date"
},
]
}
]
}
我得到一个像上面那样的JSON对象,然后在这样的页面中呈现它(玉石模板):
h5 {{ form.title }}
div(ng-repeat="fs in form.fieldsets")
fieldset
legend {{ fs.title }}
div(ng-repeat="field in fs.fields")
myfield(field="field")
myfield
是一个自定义指令,它解析每个字段并根据类型呈现不同的部分。这是代码:
var appFilters = angular.module('appComponents', []);
appFilters.directive('myfield', ['$compile', '$http', '$templateCache', function($compile, $http, $templateCache){
var getTemplate = function(contentType) {
return $http.get('partials/' + contentType + '_field', {cache: $templateCache});
// I get the partials here, for example for a field of type text, I load text_field.jade
};
var linker = function(scope, element, attrs){
scope.edit_field = function(field) {
field.type = "template";
};
var loader = getTemplate(scope.field.type);
var promise = loader.success(function(html) {
element.html(html);
}).then(function(response) {
element.replaceWith($compile(element.html())(scope));
});
};
return {
restrict: 'E',
scope: {
field:'='
},
link: linker
};
}]);
我有几个部分。它们都从一个名为field.jade
的基本模板继承。这是基本模板和另一个从中继承的模板:
field.jade:(其他部分的基本模板):
div
block _title
div
div
block _label
label {{ field.title }}:
div
block _field
div
block _controls
a.control(ng-click="edit_field(field)") Edit
text_field.jade:(部分用于文字类型的字段)
extend field
block _field
input(type="text")
template_field.jade:(部分字段,当它们处于编辑模式时)
extend field
block _label
input(type="text", ng-model="field.title")
// The user can edit the field label here
block _field
select
// Here the user can select from several different field types
现在,当用户点击Edit
按钮时,field.type
更改为template
,我希望AngularJS加载template_field.jade
视图而不是主视图(例如{ {1}})。
有没有人知道如何告诉AngularJS重新加载text_field.jade
部分?
答案 0 :(得分:1)
我找到了解决方法。它工作正常,但我不确定这是否是最好的方法。在我的edit_field
函数中,我需要手动调用linker
函数。
scope.edit_field = function(field) {
field.type = "template";
linker(scope, element, attrs);
};
而且,我必须将replaceWith()
的调用替换为html()
,因为我不知道原因,但replaceWith()
仅在第一次调用时才有效。<登记/>
所以,这一行:
element.replaceWith($compile(element.html())(scope));
应该替换为:
element.html($compile(element.html())(scope));
最终的代码是:
var appFilters = angular.module('appComponents', []);
appFilters.directive('myfield', ['$compile', '$http', '$templateCache', function($compile, $http, $templateCache){
var getTemplate = function(contentType) {
return $http.get('partials/' + contentType + '_field', {cache: $templateCache});
// I get the partials here, for example for a field of type text, I load text_field.jade
};
var linker = function(scope, element, attrs){
scope.edit_field = function(field) {
field.type = "template";
linker(scope, element, attrs);
};
var loader = getTemplate(scope.field.type);
var promise = loader.success(function(html) {
element.html(html);
}).then(function(response) {
element.html($compile(element.html())(scope));
});
};
return {
restrict: 'E',
scope: {
field:'='
},
link: linker
};
}]);
如果我在这里犯了任何错误,请纠正我。