Javascript this.state.search_results.map不是函数,但它是';这是一个数组
console.log打印: [{“id”:“testGroup2”},{“id”:“testGroup77777”},{“id”:“testGroup1”},{“id”:“testGroup3”}] 数据通过以下方式获得:Javascript this.state.search_results.map不是函数,但它是';这是一个数组,javascript,arrays,reactjs,javascript-objects,Javascript,Arrays,Reactjs,Javascript Objects,console.log打印: [{“id”:“testGroup2”},{“id”:“testGroup77777”},{“id”:“testGroup1”},{“id”:“testGroup3”}] 数据通过以下方式获得: render: function(){ console.log(this.state.search_results); var renderedSearchResults = this.state.search_results.map((result) => { 通
render: function(){
console.log(this.state.search_results);
var renderedSearchResults = this.state.search_results.map((result) => {
通过:
$.ajax({
url: this.props.routes.search,
contentType: 'application/json',
type: 'POST',
data: JSON.stringify(searchObj),
success: function(data){
console.log(data);
this.setState({search_results:data});
}.bind(this),
error: function(xhr, status,err){
console.error("/api/response", status, err.toString());
}.bind(this)
});```
我真的很困惑,这个.state.search\u results不是一个我可以迭代的数组,有人能看到发生了什么吗
我试过使用console.log(Object.prototype.toString.call(data))代码>在成功函数中,我得到:
def post(self):
"""
Makes a request to search for a specific
searchtype: Group
searchstring: ""
requestedfields: []
"""
search_type = self.json_data.get('searchtype', 'Group')
search_string = self.json_data.get('searchstring', '')
requestedfields = self.json_data.get('requestedfields', ['id'])
search_model = {
'Group': Group(),
'User': User()
}[search_type]
search_fields = {
'Group': ['id', 'tags'],
'User': ['username']
}[search_type]
# check if requestedfields contains valid fields
for field in requestedfields:
if field == 'id':
continue
value = search_model.default().get(field, None)
if value is None:
return self.set_status(400, "Model {0} does not have requested field {1}".format(search_type, field))
try:
search_results = search_model.search_items(search_string, search_fields, requestedfields)
except err:
return self.set_status(400, "Something went wrong")
self.set_status(200, "Success")
return self.write(tornado.escape.json_encode(search_results))
找到我的答案,没有在我的ajax请求中设置数据类型:“json”。在执行ajax请求时,尝试以显式方式设置json
数据类型:
[object String]
最有可能的是,jQuery用来检测数据类型的Intelligent Guess
给出了错误的结果。尝试使用JSON.parse(data),看看会得到什么。@jamesemanon我发现了,我在ajax请求中没有指定数据类型
$.ajax({
dataType: 'json',
//...
});