.save和$save之间的差异在angularjs中的资源
发布时间:2020-12-17 07:44:03 所属栏目:安全 来源:网络整理
导读:我看到代码都调用$save并保存到$资源的角度. 有什么区别,什么时候使用? 最佳解释===示例: // by writing '{ id: '@id' }' we want the id to be taken from 'id' parameter in request data,hence the '@' sign. Note that this mechanism is available fo
我看到代码都调用$save并保存到$资源的角度.
有什么区别,什么时候使用?
最佳解释===示例:
// by writing '{ id: '@id' }' we want the id to be taken from 'id' parameter in request data,hence the '@' sign. Note that this mechanism is available for non-GET RQs only: var Notes = $resource('/notes/:id',{ id: '@id' }); var noteId = "my_note1"; // below we specify 'id' explicitly - has to be done for GET RQ: // operations on our note are done inside callback function,just to make sure that the note is resolved: var note = Notes.get({ id: noteId },function () { // let's make some changes: note.topic = "A brand new topic here!"; // save using $resource "static" action (aka "class" action). 'id' is taken from data object: Notes.save(note); // We can overwrite 'id' just like this: Notes.save({ id: "some_other_noteId" },note); // even more changes: note.body = "Blah blah blah,new boring body is here"; // this time save using instance action. Again: 'id' is taken from data object: note.$save(); // changing id with instance action? there you go: note.$save({ id: "yet_another_noteId" }); // Naturally,we could just: note.id = "OMG_how_many_of_those_noteIds_has_he_left"; Notes.save(note); // ... and with instance action: note.id = "OK_he_wins"; note.$save(); }); 即使自定义$资源操作(由您定义)也可以使用$-prefixed对等方,只要它们不是GET – 请参见http://docs.angularjs.org/api/ngResource.$resource#example_creating-a-custom-put-request.
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