如何更新鹡鸰页面

Question

我正在使用 wagtail_hook 更新 Page 对象并且遇到了麻烦。更具体地说，当最终用户从浏览器中点击“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 Knowledge_base_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，当挂钩代码触发时，它会使用除知识库 ID 之外的所有信息来更新草稿。

---

但是，当我像这样更改 Knowledge_base_id 时（见上面的注释）

page_instance.knowledge_base_id = 0

并像这样保存（也可以在上面看到）

page_instance.save_revision().publish()

它保存更新的知识库 ID 但跳过其他修订。简而言之，我到底做错了什么。提前感谢您的帮助。保重，祝您有美好的一天。

Answer 1

所以我发现了问题所在。我没有尝试使用 Page 方法 save_revisions()，而是选择使用 revision.create()。在 revisions.create() 中，您将一个带有更新值的 JSON 对象传递给它。除此之外，您还传递了一个用户实例，以及提交的_for_moderation 和approved_go_live_at 的值。下面列出的是我更新的代码示例，带有 cmets。如果您对我有任何问题，请告诉我。我希望这篇文章可以帮助其他人避免在更新修订时遇到挫折。谢谢阅读。保重，有一个美好的一天。

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)