As an experienced website operations expert, I am well aware that how to flexibly use various tags to meet complex business needs is crucial in a powerful content management system like AnQiCMS. Today, let's delve into a topic aboutarchiveFiltersLabel common issues：“archiveFiltersDoes the label support setting the default value for filter conditions?

AnQiCMSarchiveFiltersLabel: Can the default value for filter conditions be set? In-depth analysis and guide to practice

In AnQiCMS,archiveFilters

Then, let's return to today's topic,archiveFiltersDoes the label support setting the default value of the filter condition? To put it directly,archiveFiltersThe label itself does not provide a parameter to directly "set" a filter condition to be "selected" when the page is first loaded (i.e., the default value)。It is mainly responsible for parsing the URL parameters of the current page, and then marking a certain option in the filtered list as “selected” based on these parameters.IsCurrent).

To better understand this, let's delve into it a bit morearchiveFiltersThe working mechanism of the tag and the parameters it provides.

archiveFiltersThe core function of tags and parameter parsing

archiveFiltersThe tag is usually used in templates like this:{% archiveFilters filters with moduleId=1 allText="全部" %}...{% endarchiveFilters %}.

It will base on the content model you specified (moduleIdParameters) as well as the URL query parameters of the current page, output an array object containing multiple filtering dimensions (such as "region", "type")filtersEach filtering dimension includes a series of optional filtering values (such as “Beijing”, “Shanghai”), which are presented in an array format.ItemsThe optional values are presented in an array format.

One notable parameter isallText。It allows you to customize the display text for the "AllfalseFrom this perspective,allTextThis special option of "All" provides a "default display text

filtersEach object initem(Filter dimension) underItemsin the array, eachval(Filter value) contains three key attributes:

  • Label: The display name of the filter value, such as "Three bedrooms and one living room".
  • Link：Click this filter value to jump to the URL, which includes the corresponding query parameters, such as/fangchan?huxing=3shi.
  • IsCurrentAn English translation of 'auto' is 'English'. An English description would be: 'A boolean value indicating whether the filter value is selected as the current URL parameter state.'This is automatically judged and marked by the AnQiCMS system according to the actual query parameters in the current page URL.

[en] It is this one.IsCurrentAttribute, revealsarchiveFiltersThe logic of label processing for the default value: it is apassive reflectionThe label of the current URL status, rather than the label set by default actively.

How to achieve the filtering effect of 'default value'?

AlthougharchiveFiltersLabel is not set to default selected directly, but we can achieve the same effect through other strategies: to implement the effect of 'default selection' for a filtering condition:

  1. Select by default through URL parametersEnglish: This is the most common and recommended way.When you want the user to see a selected filter condition by default when accessing a page, you can directly add the corresponding URL query parameters in the link./fangchanIf you want to display the listings for "Three bedrooms and one living room" by default, then you can set the navigation link or advertising link to/fangchan?huxing=3shi. When the user accesses this URL,archiveFiltersthe tag will automatically detecthuxing=3shithis parameter, and mark the filter option corresponding to "three bedrooms and one living room".IsCurrent: true.

  2. Front-end JavaScript Helper (for visual defaults in the absence of URL parameters)In some cases, you may want a specific filter option on the page to be visually highlighted by default when the user first accesses the page without any filter parameters.This can be realized by JavaScript.activeClass name. This is just a visual "default" and does not change the actual filtering logic. If the user does not interact with the filter, it will not automatically trigger data filtering.

  3. Backend routing redirection or default query： For more advanced requirements, the backend of AnQiCMS (if you have permission for secondary development) can detect during request processing if no filtering parameters are specified in the URL, and then add a default filtering parameter internally.archiveFiltersLabels will still be marked correctly according to this parameter processed by the backendIsCurrent. But this goes beyondarchiveFiltersthe scope of the label itself.

In summary, AnQiCMS'sarchiveFiltersLabels are an efficient and flexible template tool, it is throughIsCurrentThe attribute perfectly responds to the filtering status in the URL parameters.Although it does not have a built-in 'default selected' setting, we can completely achieve the 'default filter condition' effect expected by users by cleverly constructing URL links, thus providing a more intelligent and convenient content browsing experience.

Common Questions (FAQ)

1. How can I make the 'red' products default when users visit the product list page?The most direct and effective method is to include the "red" filter parameter directly in the link to the product list page. For example, if your filter field iscolor，then you can set the link to/products?color=red.archiveFiltersThe tag will automatically parse this URL and mark the 'red' option as the current selection.

2.archiveFiltersTagsallTextWhat is the difference between parameters and 'setting the default value'? allTextThe parameter is used to set the display text of the 'All' option in the filter list, such as 'Unlimited' or 'All'.It simply modifies the text label of the “All” option.allTextParameter controlled.

3. If the user has not specified any filter conditions in the URL,archiveFilterswhat will the tag display?In this case,archiveFiltersThe tag will generate all available filter options, but none of the specific filter values will be marked asIsCurrent(Currently selected).通常，“全部”或“不限”选项会默认被高亮显示（如果模板设计中有此逻辑），因为它代表了未应用任何具体筛选的状态。