Question

我使用Django 1.9.6 + Tastypie来实现RESTFUL api，有一个需要从另一台服务器上的api whitch获取数据的api，我不知道该怎么做。< / p>

我发现的所有例子都是这样的：

from tastypie.resources import ModelResource
from services.models import Product
from tastypie.authorization import Authorization


class ProductResource(ModelResource):
    class Meta:
        queryset = Product.objects.all()
        resource_name = 'product'
        allowed_methods = ['get']
        authorization = Authorization()

资源类从应用程序的模型（本地数据库）中获取数据，是否可以请求另一台服务器上的API？如果答案是肯定的，那么该如何做？

也许这个问题很愚蠢。

谢谢：）

Answer 1

您所寻找的可能是nested Resources或仅仅是相关的资源字段，例如：

full=True

ShelfResource会将整个ProductResource放在<!DOCTYPE html> <html> <head>  <link rel="import" href="../../bower_components/polymer/polymer.html"> <link rel="import" href="../../bower_components/iron-label/iron-label.html"> <link rel="import" href="../../bower_components/iron-pages/iron-pages.html"> <link rel="import" href="../../bower_components/paper-icon-button/paper-icon-button.html"> <link rel="import" href="../../bower_components/paper-input/paper-input.html"> <link rel="import" href="../../bower_components/paper-button/paper-button.html"> <link rel="import" href="../../bower_components/paper-tabs/paper-tabs.html"> </head> <dom-module id="protocolo-app"> <style> :host { display: block; } .card { box-shadow: 0 2px 2px 0 rgba(0, 0, 0, 0.14), 0 1px 5px 0 rgba(0, 0, 0, 0.12), 0 3px 1px -2px rgba(0, 0, 0, 0.2); padding: 16px; margin: 24px; border-radius: 5px; background-color: #fff; color: #757575; } .inputGray{ background-color: #555; color: #fff; } h1 { font-size: 22px; margin: 16px 0; color: #212121; } paper-tabs[grayTab]{ background: #eee; margin-top: 3%; margin-bottom: 3%; } .flex { @apply(--layout-horizontal); } .flex-horizontal-with-ratios { @apply(--layout-horizontal); } .flexchild { @apply(--layout-flex); } .flex2child { @apply(--layout-flex-2); } .flex3child { @apply(--layout-flex-3); } .flex-center-justified { @apply(--layout-horizontal); @apply(--layout-center-justified); } .flex-equal-justified { @apply(--layout-horizontal); @apply(--layout-justified); } .flex-equal-around-justified { @apply(--layout-horizontal); @apply(--layout-around-justified); } paper-button.gray { background: #eee; color: #000; } paper-button.gray:hover { background: #555; } paper-button[disabled], paper-button[toggles][active] { background: red; } </style> <template> <div class="card"> <h1>Alta de Protocolos</h1> <div class="cointainer flex-horizontal-with-ratios"> <div class="flex2child"> <iron-label>Nombre de Protocolo</iron-label> </div> <div class="flexchild"> <iron-label>Núm. Visitas</iron-label> </div> </div> <div class="cointainer flex-horizontal-with-ratios"> <div class="flex2child"> <paper-input name="protocol" id="protocol" value="{{protocol}}"></paper-input> </div> <div class="flexchild"> <paper-input name="visit" id="visit" value="{{visits}}" prevent-invalid-input allowed-pattern="[0-9]" on-change="visitChanged"></paper-input> </div> </div>  <paper-tabs selected="{{selected}}" scrollable no-slide noink grayTab> <template id="tabs" is="dom-repeat" items="{{tabArray}}"> <paper-tab>{{item.value}}</paper-tab> </template> </paper-tabs>   <iron-pages selected="{{selected}}"> <template id="pages" is="dom-repeat" items="{{tabArray}}"> <div> <template id="inputs" is="dom-repeat" items="{{concat(tabArray.array, index)}}"> <div class="container flex"> <div> <paper-input id="input" value= "{{item.value}}" placeholder="{{item.placeholder}}"></paper-input> </div> <div> <paper-button class="gray" raised on-tap="delInput">Eliminar</paper-button> </div> </div> </template> <div class="container flex"> <paper-button class="gray" raised on-tap="addInput">Agregar</paper-button> </div> </div> </template> </iron-pages>  <div class="container flex-center-justified"> <div> <paper-button class="gray" raised>Cancelar</paper-button> <paper-button class="gray" raised>Guardar</paper-button> </div> </div> </div> </template> </don-module> <script> Polymer({ is: 'protocolo-app', properties: { protocol: { type: String, value: "" }, visits:{ type:Number, value: 3, notify: true }, tabArray: { type: Array, value: [{value:"visita1"},{value:"visita2"},{value:"visita3"}] }, inputArray: { type: Array, value: [{value:"",placeholder:"t1_input1"},{value:"",placeholder:"t1_input2"},{value:"",placeholder:"t1_input3"}] } }, //funcion que agrega input's addInput: function(){ this.push('inputArray0',{value:"",placeholder:""}); }, //funcion que elimina input's delInput: function(e){ this.splice('inputArray0',e.model.index,1); }, creaArrayTabs: function(e){ console.log(this.value); }, concat: function(v1, v2){ var res = v1 + v2; alert("Concatenacion: " + res); return v1 + v2; }, //funcion que carga los arrays necesarios para la aplicacion visitChanged: function(e){ //alert("Valor: " + this.$.visit.value); //limpiamos el array para agregar las nuevas tabs this.splice('tabArray',e.model); //asignamos a la variable max el valor del input var max = this.$.visit.value; for (i = 0; i < max; i++) { //alert("Prueba " + i); this.push('tabArray',{value:"Visita " + i, array:"inputArray"}); this['inputArray'+ i] = []; for (j = 0; j < 3; j++) { this.push('inputArray' + i,{value:"",placeholder:"t"+ i + "_input"+j}); } } } }); </script>

中

Answer 2

EDITED

实现它的一种方法可能如下所示：

import requests
from requests.exceptions import RequestException
[...]    

# implementing connection in models.py gives more flexibility.
class Product(models.Model):
    [...]

    def get_something(self):
        try:
            response = requests.get('/api/v1/other/cars/12341')
        except RequestException as e:
            return {'success': False, 'error': 'Other service unavailable!'}

        if response.status_code not in [200, 201, 202, 203, 204, 205]:

            return {'success': False, 'error': 'Something went wrong ({}): {}'.format(response.status_code, response.content)}
        data = json.load(response.content)
        data['success'] = True
        return data

    def something(self):
         self.get_something()


from tastypie.resources import ModelResource
from services.models import Product
from tastypie.authorization import Authorization


class ProductResource(ModelResource):
    something = fields.CharField('something', readonly=True)

    class Meta:
        queryset = Product.objects.all()
        resource_name = 'product'
        allowed_methods = ['get']
        authorization = Authorization()

注意该字段不会＆＃39;被序列化为JSON它将被转义。了解如何修复它there

是否可以在Tastypie资源中请求其他api？

2 个答案: