Question

当我尝试构建solr架构时出现以下错误：

const asyncFuncWithoutResult = (): Observable<void> => {
  // fake something async that has no return value

  const itWorked = true; // or not
  if (itWorked) {
    return Observable.of();
  } else {
    return Observable.throw(Error('It did not work'));
  }
}

// call the service
asyncFuncWithoutResult()
  .subscribe(
    undefined, // nothing will be emitted when using Observable.of()
    (err: any) => console.error(err), // handle error state
    () => console.log('Success'),     // handle success state
  );

也许这些信息会很有用：

mysite / settings.py 文件：

(my_env) pecan@tux ~/Documents/Django/mysite $ python manage.py build_solr_schema
Traceback (most recent call last):
  File "manage.py", line 22, in <module>
    execute_from_command_line(sys.argv)
  File "/home/pecan/Documents/Django/my_env/lib/python3.4/site-packages/django/core/management/__init__.py", line 364, in execute_from_command_line
    utility.execute()
  File "/home/pecan/Documents/Django/my_env/lib/python3.4/site-packages/django/core/management/__init__.py", line 356, in execute
    self.fetch_command(subcommand).run_from_argv(self.argv)
  File "/home/pecan/Documents/Django/my_env/lib/python3.4/site-packages/django/core/management/base.py", line 283, in run_from_argv
    self.execute(*args, **cmd_options)
  File "/home/pecan/Documents/Django/my_env/lib/python3.4/site-packages/django/core/management/base.py", line 330, in execute
    output = self.handle(*args, **options)
  File "/home/pecan/Documents/Django/my_env/lib/python3.4/site-packages/haystack/management/commands/build_solr_schema.py", line 29, in handle
    schema_xml = self.build_template(using=using)
  File "/home/pecan/Documents/Django/my_env/lib/python3.4/site-packages/haystack/management/commands/build_solr_schema.py", line 57, in build_template
    return t.render(c)
  File "/home/pecan/Documents/Django/my_env/lib/python3.4/site-packages/django/template/backends/django.py", line 64, in render
    context = make_context(context, request, autoescape=self.backend.engine.autoescape)
  File "/home/pecan/Documents/Django/my_env/lib/python3.4/site-packages/django/template/context.py", line 287, in make_context
    raise TypeError('context must be a dict rather than %s.' % context.__class__.__name__)
TypeError: context must be a dict rather than Context.

博客/ search_indexes.py 文件：

"""
Django settings for mysite project.

Generated by 'django-admin startproject' using Django 1.11.5.

For more information on this file, see
https://docs.djangoproject.com/en/1.11/topics/settings/

For the full list of settings and their values, see
https://docs.djangoproject.com/en/1.11/ref/settings/
"""

import os

# Build paths inside the project like this: os.path.join(BASE_DIR, ...)
BASE_DIR = os.path.dirname(os.path.dirname(os.path.abspath(__file__)))


# Quick-start development settings - unsuitable for production
# See https://docs.djangoproject.com/en/1.11/howto/deployment/checklist/

# SECURITY WARNING: keep the secret key used in production secret!
SECRET_KEY = '****'

# SECURITY WARNING: don't run with debug turned on in production!
DEBUG = True

ALLOWED_HOSTS = []

SITE_ID = 1

# Application definition

INSTALLED_APPS = [
    'django.contrib.admin',
    'django.contrib.auth',
    'django.contrib.contenttypes',
    'django.contrib.sessions',
    'django.contrib.messages',
    'django.contrib.staticfiles',
    'django.contrib.sites',
    'django.contrib.sitemaps',
    'blog',
    'taggit',
    'haystack',
]

MIDDLEWARE = [
    'django.middleware.security.SecurityMiddleware',
    'django.contrib.sessions.middleware.SessionMiddleware',
    'django.middleware.common.CommonMiddleware',
    'django.middleware.csrf.CsrfViewMiddleware',
    'django.contrib.auth.middleware.AuthenticationMiddleware',
    'django.contrib.messages.middleware.MessageMiddleware',
    'django.middleware.clickjacking.XFrameOptionsMiddleware',
]

ROOT_URLCONF = 'mysite.urls'

TEMPLATES = [
    {
        'BACKEND': 'django.template.backends.django.DjangoTemplates',
        'DIRS': [],
        'APP_DIRS': True,
        'OPTIONS': {
            'context_processors': [
                'django.template.context_processors.debug',
                'django.template.context_processors.request',
                'django.contrib.auth.context_processors.auth',
                'django.contrib.messages.context_processors.messages',
            ],
        },
    },
]

WSGI_APPLICATION = 'mysite.wsgi.application'


# Database
# https://docs.djangoproject.com/en/1.11/ref/settings/#databases

DATABASES = {
    'default': {
        'ENGINE': 'django.db.backends.sqlite3',
        'NAME': os.path.join(BASE_DIR, 'db.sqlite3'),
    }
}


# Password validation
# https://docs.djangoproject.com/en/1.11/ref/settings/#auth-password-validators

AUTH_PASSWORD_VALIDATORS = [
    {
        'NAME': 'django.contrib.auth.password_validation.UserAttributeSimilarityValidator',
    },
    {
        'NAME': 'django.contrib.auth.password_validation.MinimumLengthValidator',
    },
    {
        'NAME': 'django.contrib.auth.password_validation.CommonPasswordValidator',
    },
    {
        'NAME': 'django.contrib.auth.password_validation.NumericPasswordValidator',
    },
]


# Internationalization
# https://docs.djangoproject.com/en/1.11/topics/i18n/

LANGUAGE_CODE = 'en-us'

TIME_ZONE = 'UTC'

USE_I18N = True

USE_L10N = True

USE_TZ = True


# Static files (CSS, JavaScript, Images)
# https://docs.djangoproject.com/en/1.11/howto/static-files/

STATIC_URL = '/static/'

HAYSTACK_CONNECTIONS = {
    'default': {
        'ENGINE': 'haystack.backends.solr_backend.SolrEngine',
        'URL': 'http://127.0.0.1:8983/solr/blog'
    },
}

blog / templates / search / indexes / blog / post_text.txt 文件：

from haystack import indexes
from .models import Post

class PostIndex(indexes.SearchIndex, indexes.Indexable):
    text = indexes.CharField(document=True, use_template=True)
    publish = indexes.DateTimeField(model_attr='publish')

    def get_model(self):
        return Post

    def index_queryset(self, using=None):
        return self.get_model().published.all()

我使用Apache Solr 4.10.4，Python 3.4.5和Django 1.11.5。当我尝试在Python控制台中导入haystack时，我遇到了以下错误：

{{ object.title }}
{{ object.tags.all|join:", " }}
{{ object.body }}

我正在寻求帮助。

Answer 1

我的Django项目中的Haystack版本是错误的。我使用了django-haystack 2.6.1包，但是django模板上下文传递存在问题。此版本在上下文中传递了Context对象而不是字典。更多详情：https://github.com/django-haystack/django-haystack/pull/1504/commits/295584314e19a191a59450e053b21809adceca2a。

django-haystack 2.6.1中的

haystack / management / commands / build_solr_schema.py ：

     content_field_name, fields = backend.build_schema(
         connections[using].get_unified_index().all_searchfields()
     )
     return Context({
         'content_field_name': content_field_name,
         'fields': fields,
         'default_operator': constants.DEFAULT_OPERATOR,
         'ID': constants.ID,
         'DJANGO_CT': constants.DJANGO_CT,
         'DJANGO_ID': constants.DJANGO_ID,
     })

 def build_template(self, using):
     t = loader.get_template('search_configuration/solr.xml')

django-haystack 2.7.dev0中的

haystack / management / commands / build_solr_schema.py ：

     content_field_name, fields = backend.build_schema(
         connections[using].get_unified_index().all_searchfields()
     )

     return {
         'content_field_name': content_field_name,
         'fields': fields,
         'default_operator': constants.DEFAULT_OPERATOR,
         'ID': constants.ID,
         'DJANGO_CT': constants.DJANGO_CT,
         'DJANGO_ID': constants.DJANGO_ID,
     }

 def build_template(self, using):
     t = loader.get_template('search_configuration/solr.xml')

我必须卸载django-haystack 2.6.1并使用命令安装更新的版本：

pip uninstall django-haystack
pip install django-haystack==2.7.dev0

我也解决了导入错误。在这种情况下，我只是将行HAYSTACK_ID_FIELD = 1添加到 settings.py 文件中，并将所需的环境变量DJANGO_SETTINGS_MODULE设置为值mysite.settings。

我在编辑 settings.py 后执行了以下命令：

(my_env) pecan@tux ~/Documents/Django/mysite $ DJANGO_SETTINGS_MODULE="mysite.settings"
(my_env) pecan@tux ~/Documents/Django/mysite $ echo $DJANGO_SETTINGS_MODULE 
mysite.settings
(my_env) pecan@tux ~/Documents/Django/mysite $ DJANGO_SETTINGS_MODULE python
bash: DJANGO_SETTINGS_MODULE: command not found
(my_env) pecan@tux ~/Documents/Django/mysite $ python
Python 3.4.5 (default, Sep 17 2017, 18:19:56) 
[GCC 5.4.0] on linux
Type "help", "copyright", "credits" or "license" for more information.
>>> import haystack
>>>

现在django-haystack正常运作！

Answer 2

调试干草堆

人们在第一次使用Haystack时遇到了一些常见问题。

“没有名为haystack的模块。”

首次将Haystack添加到项目中时，通常会出现此问题。

您使用haystack中的django-haystack目录吗？结帐/安装？
haystack上的PYTHONPATH目录？或者，是符号链接到您的项目中的haystack？
启动Django shell（./manage.py shell）并尝试import haystack。您可能会收到不同的，更具描述性的错误消息。
仔细检查以确保您没有循环导入。（即模块A. 尝试从试图从模块导入的模块B导入甲。）

“未找到任何结果。”（在网页上）

有几个问题可能导致无法找到结果。最常见的是，要么没有运行rebuild_index来填充索引，要么只有一个空白的document=True字段，导致没有内容供引擎搜索。

您是否在已安装的应用中找到了search_indexes.py？
您的数据库中是否有数据？
您是否运行./manage.py rebuild_index索引所有内容内容？
尝试运行./manage.py rebuild_index -v2以获得更详细的输出确保正在处理/插入数据。
启动Django shell（./manage.py shell）并尝试：

  来自haystack.query的
导入SearchQuerySet

sqs = SearchQuerySet（）。all（）

sqs.count（）

你应该得到一个整数＆gt; 0.如果没有，请检查以上和重新索引。

sqs [0]＃应该返回一个SearchResult对象。

sqs [0] .id＃应该像'myapp.mymodel.1'那样回复。

sqs [0] .text＃...或者您的文档= True field is。

如果您返回u''或None，则表示您的数据不是使其成为被搜索的主要领域。你需要检查一下该字段要么具有使用模型数据的模板，a model_attr直接从模型或a中提取数据在索引时填充数据的prepare/prepare_FOO方法。
检查搜索页面的模板，确保其循环播放结果得当。还要确保它访问有效从搜索引擎返回的字段或它正在尝试的字段通过{{ result.object.foo }}查找访问相关模型。

来源：http://django-haystack.readthedocs.io/en/v2.4.1/toc.html

Django Haystack - 无法构建solr架构

2 个答案: