renderControl: function () {
var that = this;
var _CountryCol = new CountryCol();
var _ComboCol = new ComboCol();
_CountryCol.fetch({
success: function (data) {
that.$("#ctr").select2({
placeholder: "Select a Country",
allowClear: true,
data: JSON.parse(JSON.stringify(data)),
});
}
});
_ComboCol.fetch({
data: { id: 'status' },
success: function (data) {
that.$("#sta").select2({
placeholder: "Select a status",
allowClear: true,
data: JSON.parse(JSON.stringify(data)),
});
}
});
_ComboCol.fetch({
data: { id: 'marital' },
success: function (data) {
that.$("#mrt").select2({
placeholder: "Select a marital",
allowClear: true,
data: JSON.parse(JSON.stringify(data)),
});
}
});
_ComboCol.fetch({
data: { id: 'daytype' },
success: function (data) {
that.$("#dty").select2({
placeholder: "Select a type",
allowClear: true,
data: JSON.parse(JSON.stringify(data)),
});
}
});
this.$("#hpn, #hmn, #icn").numeric({ decimal: false, negative: false });
this.$('#dob').datepicker({
dateFormat: 'dd/mm/yy'
});
},
任何地方缩短?代码工作正常,只需调用多个ajax看起来麻烦又乏味,代码看起来也不那么优雅,如果有人对它有更好的想法,可以分享骨干代码的方式,以便更容易管理,感谢
更新1:
通过参考Marc的想法,我进一步减少了代码,但不确定这是否正确,任何反馈都会很棒
renderControl: function () { //use to render special control
var that = this;
var _CountryCol = new CountryCol();
var _ComboCol = new ComboCol();
$.when(
_CountryCol.fetch(),
_ComboCol.fetch({ data: { id: 'status' } }),
_ComboCol.fetch({ data: { id: 'marital' } }),
_ComboCol.fetch({ data: { id: 'daytype' } })).done(
function (country, status, marital, daytype) {
that.populateSelect('#ctr', "Select a country", country);
that.populateSelect("#sta", "Select a status", status);
that.populateSelect("#mrt", "Select a marital", marital);
that.populateSelect("#dty", "Select a type", daytype);
});
this.$("#hpn, #hmn, #icn").numeric({ decimal: false, negative: false });
this.$('#dob').datepicker({
dateFormat: 'dd/mm/yy'
});
},
populateSelect: function (selector, placeholder, collection) {
debugger;
this.$(selector).select2({
placeholder: placeholder,
allowClear: true,
data: JSON.parse(JSON.stringify(collection[0]))
});
},
答案 0 :(得分:2)
AS @mike说,请使用听众。
要执行此操作,您需要在获取之前添加代码,如:
_CountryCol.on('sync', function(collection) {
that.$("#ctr").select2({
placeholder: "Select a Country",
allowClear: true,
data: JSON.stringify(collection.toJSON())
});
});
_CountryCol.fetch()
虽然这个解决方案只是将代码从一个地方移动到另一个地方,但并没有真正削减代码。将重复的代码放在一个函数中将会:
populateSelect = function(selector, placeholder, collection) {
that.$(selector).select2({
placeholder: placeholder,
allowClear: true,
data: JSON.stringify(collection.toJSON())
});
}
_CountryCol.on('sync', function(collection) {
populateSelect("#ctr", "Select a Country", collection);
});
_CountryCol.fetch();
_ComboCol.on('sync', function(collection) {
populateSelect("#sta", "Select a status", collection)
});
_ComboCol.fetch({data: {id: 'status'}});
答案 1 :(得分:1)
不确定这里的整体情况,但通常在Backbone中,最好处理对集合中侦听器的提取的响应,而不是fetch
方法本身的回调。这样你可能只需要编写一次回调代码。