小编Cas*_*sey的帖子

例如,我可以这样做:

if ($my_array = wp_get_category($id)) {
    echo "asdf";
} else {
    echo "1234";
}

如果函数没有返回任何内容,我想进入else语句.

我正在尝试在我的网站上设置事件跟踪,但无法使其正常工作.

我的跟踪代码:

<script>
  (function(i,s,o,g,r,a,m){i['GoogleAnalyticsObject']=r;i[r]=i[r]||function(){
  (i[r].q=i[r].q||[]).push(arguments)},i[r].l=1*new Date();a=s.createElement(o),
  m=s.getElementsByTagName(o)[0];a.async=1;a.src=g;m.parentNode.insertBefore(a,m)
  })(window,document,'script','//www.google-analytics.com/analytics.js','ga');

  ga('create', 'UA-420xxxxxxx', 'mywebsite.org');
  ga('send', 'pageview');

</script>

我的事件跟踪代码:

<a href="#PurchasePanelLink" class="uk-button uk-button-primary" onClick="$('#PurchasePanel').show(); _gaq.push(['_trackEvent', 'Button', 'Click', 'Purchase Details',, false]);">Purchase Details</a>

我正在尝试在Django中设置一个表单并将数据保存到我的数据库,而不使用ModelForm.我的表单正在运行,但我坚持的部分是如何处理表单数据并将其保存在视图中.正如你所看到的,在'if form.is_valid()之后:'我陷入困境,无法想到正确的代码.

# models.py

from django.db import models

class Listing(models.Model):
    business_name = models.CharField(max_length=80)
    business_email = models.EmailField()
    business_website = models.CharField(max_length=80)
    business_phone = models.CharField(max_length=80)

# forms.py

from django import forms

class NewBusinessForm(forms.Form):
    business_name = forms.CharField(label='Business Name', max_length=100)
    business_phone = forms.CharField(label='Phone Number', max_length=100)
    business_email = forms.EmailField(label='Email Address', max_length=100)
    business_website = forms.CharField(label='Web Site', max_length=100)

# views.py

from django.shortcuts import render
from django.http import HttpResponseRedirect
from .forms import NewBusinessForm

def new_business(request):
    if request.method == 'POST':
        form = NewBusinessForm(request.POST)
        if form.is_valid():
            # process form data
            return …

您是否设置外键就nullable=false好像总是期望数据库中该列上的外键一样？

我正在使用 sqlalchemy 并使用所需的外键设置我的模型。这有时会导致我session.commit()更频繁地运行，因为我需要父模型具有 id 并完全创建，以便在 ORM 中构建子对象。什么被认为是最佳实践？我的模型如下：

class Location(Base):
    __tablename__ = 'locations'

    id = Column(Integer, primary_key=True)
    city = Column(String(50), nullable=False, unique=True)

    hotels = relationship('Hotel', back_populates='location')


class Hotel(Base):
    __tablename__ = 'hotels'

    id = Column(Integer, primary_key=True)
    name = Column(String(100), nullable=False, unique=True)
    phone_number = Column(String(20))
    parking_fee = Column(String(10))
    location_id = Column(Integer, ForeignKey('locations.id'), nullable=False)

    location = relationship('Location', back_populates='hotels')

我正在尝试将以下 URL 结构提供给请求：

https://inventory.data.gov/api/action/datastore_search?resource_id=8ea44bc4-22ba-4386-b84c-1494ab28964b&filters={"City":"Las Vegas","State":"NV"}

我想将 URL 分解为参数，但我很难让过滤器部分正常工作。我最终使用了以下代码：

url = 'https://inventory.data.gov/api/action/datastore_search?' \
        'resource_id=8ea44bc4-22ba-4386-b84c-1494ab28964b&' \
        'filters={"City":"' + city + '","State":"' + state + '"}'

resp = requests.get(url=url)
print resp.url

有谁知道我如何修改它以处理类似的请求requests.get(url=url, params=params)？

我有一个Django应用程序并在Heroku上运行.我想运行一个名为import.py的简单脚本,它将CSV文件导入到我的模型中.它在我的本地计算机上运行良好.当我尝试使用此命令在Heroku上运行脚本时:

heroku run python manage.py < import.py

它只是将脚本读回给我,但不执行任何内容.我究竟做错了什么？

编辑:

这是我运行时获得的结果的开始:heroku运行python manage.py <import.py

Type "help", "copyright", "credits" or "license" for more information.
(InteractiveConsole)
>>> import csv
>>> from bah_api.models import withDependents, withOutDependents, ZipMHA
>>> 
>>> # Populate CSV file into model
>>> def LoadCSV(file_location, my_model, delim):
... f = open(file_location)
  File "<console>", line 2
    f = open(file_location)
    ^
IndentationError: expected an indented block
>>> csv_f = csv.reader(f, delimiter=delim)
Traceback (most recent call last):
  File "<console>", line 1, in <module>
NameError: name …

我正在尝试在我的Flask视图函数中模拟SendGrid方法,以便它在测试期间不发送电子邮件.当我运行下面的代码时,我得到一个错误'ImportError:没有名为sg的模块'.如何正确配置'sg'方法,以便在测试中找到它？

# test_helpers.py
from unittest import TestCase
from views import app

class PhotogTestCase(TestCase):

    def setUp(self):
        app.config['WTF_CSRF_ENABLED'] = False
        app.config['TESTING'] = True
        self.app = app
        self.client = app.test_client()

# test_views.py
import mock
from test_helpers import PhotogTestCase
import sendgrid

class TestAddUser(PhotogTestCase):

    sg = sendgrid.SendGridClient(app.config['SENDGRID_API_KEY'])

    @mock.patch('sg.send')
    def test_add_user_page_loads(self, mocked_send):
        mocked_send.return_value = None  # Do nothing on send

        resp = self.client.post('/add_user', data={
                'email': 'joe@hotmail.com'
            }, follow_redirects=True)
        assert 'Wow' in resp.data

# views.py
import sendgrid
from itsdangerous import URLSafeTimedSerializer
from flask import Flask, redirect, render_template, …

如何使用CSS填写UTF-8星的背景颜色(☆)？我尝试使用它,但它只更改边框颜色:

.rating {
  color: #f70;
}

<p class="rating">&#9734;&#9734;&#9734;&#9734;</p>

我正在尝试创建一个递归函数,它接受一个JSON字典并将任何带有键名'rate'的值存储到列表中.然后,我将获取该列表并找到最低值.我的代码现在看起来像这样,但是在列表中生成多个空列表.

def recurse_keys(df):
    rates = []
    for key, value in df.items():
        if key == 'rate':
            rates.append(value)
        if isinstance(df[key], dict):
            recurse_keys(df[key])

所有,

我有两个看起来像这样的选择:

<select name='input_34' id='input_1_34'  class='small gfield_select' tabindex='1' >
<option value='29' >Alabama</option>
<option value='34' >Alaska</option>
<option value='42' >Arizona</option>
....

<select name='input_13' id='input_13' class='small gfield_select'  tabindex="2"> 
<option value='-1' selected='selected'>Select a base</option> 
<option class="level-0" value="29">Alabama</option> 
<option class="level-1" value="30">&nbsp;&nbsp;&nbsp;Anniston Army Depot</option> 
<option class="level-1" value="333">&nbsp;&nbsp;&nbsp;Fort Rucker</option> 
<option class="level-1" value="32">&nbsp;&nbsp;&nbsp;Maxwell-Gunter AFB</option> 
<option class="level-1" value="33">&nbsp;&nbsp;&nbsp;Redstone Arsenal</option> 
<option class="level-0" value="34">Alaska</option> 
<option class="level-1" value="35">&nbsp;&nbsp;&nbsp;Eielson AFB</option> 
<option class="level-1" value="36">&nbsp;&nbsp;&nbsp;Elmendorf AFB</option> 
<option class="level-1" value="37">&nbsp;&nbsp;&nbsp;Fort Greely</option> 
<option class="level-1" value="38">&nbsp;&nbsp;&nbsp;Fort Richardson</option> 
<option class="level-1" value="39">&nbsp;&nbsp;&nbsp;Fort Wainwright</option> 
<option class="level-1" value="40">&nbsp;&nbsp;&nbsp;USCG ISC Kodiak</option> 
<option class="level-1" …