Question

我已经加入了几个表，这些表生成了一个如下所示的数据集：

GroupName: "Products and Services";
GroupSortOrder: 0
TopicName: "Money Transfer"
TopicOrder: 11
Question: "Money Transfer question 1"
Answer: "Money Transfer answer 1"
ItemOrder: 0

[在许多项目的列表中重复]

我的目的是最终得到一个JSON结果，如下所示：

var jsonResult = [{ 
   title: 'Products and Services', 
   order: 0, 
   items: [{
       text: 'Money Transfer',
       order: 11,
       questionsAndAnswers: [{
           question: 'Money transfer question 1',
           answer: 'Money transfer answer 1',
           order: 0
        }]
   }]
}];

我尝试了很多东西，包括LINQ的GroupBy，遗憾的是，它将分组的值放在键中，也无法将相关值（顺序，项目）与＆＃34;组名称＆＃一起移动34。

以下是我最接近的尝试，最后是正确的群组和＆＃34;群组级数据＆＃34;但是每个群组都包含所有主题，每个主题都包含所有问题，而不仅仅是与该组和主题相关＆＃34;类别＆＃34;。

更新，更接近解决方案

        /// <summary>
        /// First organizes all FAQ items by topic property, removes topic data by from item level and groups results by topic desc
        /// </summary>
        /// <param name="allFaqItemsInSelectedSystem">2d collection of all faq items to be restructured.</param>
        /// <param name="outErrors">Errors out.</param>
        /// <returns>JSON string containing questionAnswer data inside of related topic objects</returns>
        public string SortAndRestructureFaqItemsData(List<FAQQuestionAnswer> allFaqItemsInSelectedSystem, out string outErrors)
        {
            string jsonResult = string.Empty;
            string errors = string.Empty;

            // Final result, collection of unique groups
            List<FAQGroupedTopicsItemsQuestionsAnswers> groupsCollection = new List<FAQGroupedTopicsItemsQuestionsAnswers>();

            // Collection for FAQQuestionAnswerOnly.
            List<FAQQuestionAnswerOnly> faqItemsForTopic = new List<FAQQuestionAnswerOnly>();

            foreach (var faq in allFaqItemsInSelectedSystem)
            {   
                // Get topic name from faq data.
                string topicName = faq.TopicName;

                // Get group name from faq data.
                string groupName = faq.GroupName;

                // New temp topic.
                FAQTopicsWithItemsResult newTopic = new FAQTopicsWithItemsResult(topicName, faq.TopicOrder, faqItemsForTopic);

                // Check if this group exists.
                if (groupsCollection.Any(faqGroup => faqGroup.GroupName == faq.GroupName))
                {
                    // Check if the topic exists inside of this group
                    if (groupsCollection.Any(faqGroup => faqGroup.GroupTopics.Any(faqTopic => faqTopic.Title == topicName)))
                    {
                        // Since the and group exists, add the newTopic to it which also contains the first item.
                        groupsCollection.Find(faqGroup => faqGroup.GroupName == groupName).GroupTopics.Find(faqTopic => faqTopic.Title == topicName).Items.Add(new FAQQuestionAnswerOnly(faq.Question, faq.Answer, faq.ItemOrder));
                    }
                    else
                    {
                        // Since the group exists but not the topic, add the new topic containing the new item to the matching group.
                        groupsCollection.Find(faqGroup => faqGroup.GroupName == groupName).GroupTopics.Add(newTopic);
                    }
                }
                else
                {
                    // Since this is a new group, add it along with the new topic, and faqItem
                    groupsCollection.Add(new FAQGroupedTopicsItemsQuestionsAnswers(groupName, faq.GroupSortOrder, new List<FAQTopicsWithItemsResult> { newTopic }));
                }
            }   

            try
            {
                jsonResult = JsonConvert.SerializeObject(groupsCollection);
            }
            catch (Exception error)
            {
                errors = error.Message;
            }

            outErrors = errors;

            return jsonResult;
        }

我会发布结果，但它太大了。这是一个缩写版本：

var jsonResult = [{ 
   title: 'Products and Services', 
   order: 0, 
   items: [{
       text: 'Money Transfer',
       order: 11,
       questionsAndAnswers: [{
           question: 'Money transfer question 1',
           answer: 'Money transfer answer 1',
           order: 0
        },
         { ... plus all items in all topics instead of just the ones in the 'Money Transfer' topic. }
      ]
   },
         { ... plus all topics in all groups, instead of just the ones in the 'Products and services' topic. }]
}];

提前感谢任何人都可以提供的任何帮助。如果有的话我会更容易解决。

Answer 1

我自己最终得到了这个，这正是我需要的东西:)

    /// <summary>
    /// First organizes all FAQ items by topic property, removes topic data by from item level and groups results by topic desc
    /// </summary>
    /// <param name="allFaqItemsInSelectedSystem">2d collection of all faq items to be restructured.</param>
    /// <param name="outErrors">Errors out.</param>
    /// <returns>JSON string containing questionAnswer data inside of related topic objects</returns>
    public string SortAndRestructureFaqItemsData(List<FAQQuestionAnswer> allFaqItemsInSelectedSystem, out string outErrors)
    {
        string jsonResult = string.Empty;
        string errors = string.Empty;

        // Final result, collection of unique groups
        List<FAQGroupedTopicsItemsQuestionsAnswers> groupsCollection = new List<FAQGroupedTopicsItemsQuestionsAnswers>();

        foreach (var faq in allFaqItemsInSelectedSystem)
        {   
            // Get topic name from faq data.
            string topicName = faq.TopicName;

            // Get group name from faq data.
            string groupName = faq.GroupName;

            // Is this a new group or existing?
            bool groupExists = groupsCollection.Any(faqGroup => faqGroup.GroupName == faq.GroupName);

            // Is this topic new or existing?
            bool topicExists = groupsCollection.Any(faqGroup => faqGroup.GroupTopics.Any(faqTopic => faqTopic.Title == topicName));

            // New temp topic.
            FAQTopicsWithItemsResult newTopic = new FAQTopicsWithItemsResult(topicName, faq.TopicOrder, new List<FAQQuestionAnswerOnly>());

            // Check if this group exists.
            if (groupExists)
            {
                // Check if the topic exists inside of this group
                if (topicExists)
                {
                    // Since the and group exists, add the newTopic to it which also contains the first item.
                    groupsCollection.Find(faqGroup => faqGroup.GroupName == groupName).GroupTopics.Find(faqTopic => faqTopic.Title == topicName).Items.Add(new FAQQuestionAnswerOnly(faq.Question, faq.Answer, faq.ItemOrder));
                }
                else
                {
                    // Since the group exists but not the topic, add the new topic containing the new item to the matching group.
                    groupsCollection.Find(faqGroup => faqGroup.GroupName == groupName).GroupTopics.Add(newTopic);
                }
            }
            else
            {
                // Since this is a new group, add it along with the new topic, and new faqItem
                groupsCollection.Add(new FAQGroupedTopicsItemsQuestionsAnswers(groupName, faq.GroupSortOrder, new List<FAQTopicsWithItemsResult> { newTopic }));
            }
        }   

        try
        {
            jsonResult = JsonConvert.SerializeObject(groupsCollection);
        }
        catch (Exception error)
        {
            errors = error.Message;
        }

        outErrors = errors;

        return jsonResult;
    }

有效地展平数据列表

1 个答案: