Python 如何更新Wagtail页面

我使用wagtail_钩子更新页面对象，遇到了麻烦。更具体地说，当最终用户从浏览器点击“保存草稿”按钮时，我希望触发以下代码。此代码的目的是根据下面列出的条件语句的结果动态更改知识库id

def sync_knowledge_base_page_with_zendesk2(request, page):
    if isinstance(page, ContentPage):
        page_instance = ContentPage.objects.get(pk=page.pk)
        pageJsonHolder = page_instance.get_latest_revision().content_json
        content = json.loads(pageJsonHolder)
        print("content at the start = ")
        print(content['knowledge_base_id'])
        kb_id_revision = content['knowledge_base_id']
        kb_active_revision = content['kb_active']
        if kb_active_revision == "T":
            if kb_id_revision == 0:
                print("create the article")
                content['knowledge_base_id'] = 456
                #page_instance.knowledge_base_id = 456 # change this API call
            else:
                print("update the article")
        elif kb_id_revision != 0:
            print("delete the article")
            content['knowledge_base_id'] = 0
            #page_instance.knowledge_base_id = 0
        print("content at the end = ")
        print(content['knowledge_base_id'])
        #page_instance.save_revision().publish

因此，当钩子代码触发时，它会用除知识库id之外的所有信息更新草稿

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但是，当我像这样更改知识库id时（参见上面的注释）

然后像这样保存它（也可以看到上面的注释）

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它保存更新的知识库id，但跳过其他修订。简言之，我到底做错了什么。提前感谢您的帮助。保重，祝你度过愉快的一天。

所以我解决了这个问题。我没有尝试使用页面方法save_revisions（），而是选择使用revisions.create（）。在revisions.create（）中，您将向其传递一个JSON对象和更新的值。除此之外，您还将传递用户的一个实例，以及提交供审核和批准的值。下面列出的是我的更新代码示例和注释。如果你有任何问题，请告诉我。我希望这篇文章能帮助其他人避免因更新版本而感到沮丧。谢谢你的阅读。保重，祝你度过愉快的一天

from wagtail.wagtailcore import hooks
from .models import ContentPage
import json


# Allows the latest page revision JSON to be updated based on conditionals
def sync_kb_page_with_zendesk(request, page):

    # Sanity check to ensure page is an instance of ContentPage
    if isinstance(page, ContentPage):

        # this sets the user variable
        user_var = request.user 

        # sets the Content Page
        page_instance = ContentPage.objects.get(pk=page.pk) 

        # this retrieves JSON str w/ latest revisions
        pageJsonHolder = page_instance.get_latest_revision().content_json 

        # this takes the json string and converts it into a json object
        content = json.loads(pageJsonHolder) 

        # this sets the kb id variable for use in the code
        kb_id_revision = content['knowledge_base_id'] 

        # this sets the kb active variable for use in the code
        kb_active_revision = content['kb_active'] 

        # this is the conditional logic 
        if kb_active_revision == "T":
            if kb_id_revision == 0:
                print("create the article")
                # updates the kb id value in the JSON object
                content['knowledge_base_id'] = 456 
            else:
                print("update the article")
        elif kb_id_revision != 0:
            print("delete the article")
            # updates the kb id value in the JSON object
            content['knowledge_base_id'] = 0 

        # this takes the JSON object and coverts it back to a JSON str
        revisionPageJsonHolder = json.dumps(content) 

        # this takes your JSON str and creates the latest revision of Page 
        revision = page_instance.revisions.create(
            content_json=revisionPageJsonHolder,
            user=user_var,
            submitted_for_moderation=False,
            approved_go_live_at=None,
        ) 


# registers the function to fire after page edit
hooks.register('after_edit_page', sync_kb_page_with_zendesk) 

# registers the function to fire after page creation
hooks.register('after_create_page', sync_kb_page_with_zendesk)

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您要将此函数附加到哪个钩子？hooks.register（'after_edit_page'，sync_knowledge_base_page_与\u zendesk2）hooks.register（'after_create_page'，sync_knowledge_base_page_与\u zendesk2）恐怕我无法从这个代码片段中提取特定于摇摆尾的细节-这段代码中似乎发生了很多事情（测试

kb\u active\u revision

，提及API调用…）这与您的问题没有直接关系。您能否将其细化为一个最小、完整且可验证的示例（），请？我想获取一个包含最新页面修订版信息的JSON对象。幸运的是，这一部分已经完成。根据条件语句的结果，我想更改其中一个键的一个值。这一部分也已经完成。我现在有一个JSON对象，其中包含所有正确的值。那么@gasman，我如何保存更新后的JSON对象ject作为最新版本，因此在页面刷新后，浏览器中显示的值？我尝试将JSON传递给save_revisions（）方法，但遇到了问题。使用save_revisions.publish（）将键值保存到模型，而不是上一个版本。

page_instance.save_revision().publish()

from wagtail.wagtailcore import hooks
from .models import ContentPage
import json


# Allows the latest page revision JSON to be updated based on conditionals
def sync_kb_page_with_zendesk(request, page):

    # Sanity check to ensure page is an instance of ContentPage
    if isinstance(page, ContentPage):

        # this sets the user variable
        user_var = request.user 

        # sets the Content Page
        page_instance = ContentPage.objects.get(pk=page.pk) 

        # this retrieves JSON str w/ latest revisions
        pageJsonHolder = page_instance.get_latest_revision().content_json 

        # this takes the json string and converts it into a json object
        content = json.loads(pageJsonHolder) 

        # this sets the kb id variable for use in the code
        kb_id_revision = content['knowledge_base_id'] 

        # this sets the kb active variable for use in the code
        kb_active_revision = content['kb_active'] 

        # this is the conditional logic 
        if kb_active_revision == "T":
            if kb_id_revision == 0:
                print("create the article")
                # updates the kb id value in the JSON object
                content['knowledge_base_id'] = 456 
            else:
                print("update the article")
        elif kb_id_revision != 0:
            print("delete the article")
            # updates the kb id value in the JSON object
            content['knowledge_base_id'] = 0 

        # this takes the JSON object and coverts it back to a JSON str
        revisionPageJsonHolder = json.dumps(content) 

        # this takes your JSON str and creates the latest revision of Page 
        revision = page_instance.revisions.create(
            content_json=revisionPageJsonHolder,
            user=user_var,
            submitted_for_moderation=False,
            approved_go_live_at=None,
        ) 


# registers the function to fire after page edit
hooks.register('after_edit_page', sync_kb_page_with_zendesk) 

# registers the function to fire after page creation
hooks.register('after_create_page', sync_kb_page_with_zendesk)