How can you elegantly display the member status of users (such as: member, non-member, pending review) using the AnQiCMS template `yesno` filter?

In website operation, clearly displaying the user's membership status is a key factor in improving user experience and guiding user behavior.We often encounter situations where we need to display different texts or styles based on the different states of users (such as whether they are members, their membership level, whether their account is active, etc.).yesnoFilter is a very practical tool, which can help us handle these conditional judgments in an elegant and concise manner, making the template code cleaner and easier to read.

Understanding AnQiCMSyesnoFilter

AnQiCMS's template engine supports Django template syntax, making content operation very flexible.yesnoThe filter is one of the convenient tools for us to deal with boolean logic. Its core idea is: to output the preset text based on the 'truth value' of a variable.

By default,yesnoThe filter will determine if a variable is true (true) or false (false) or empty (nilorunknown) and output 'yes', 'no', or 'maybe' accordingly.

Take a simple example, suppose we have a boolean variableisActive:

{# 假设 isActive 为 true #}
<p>状态：{{ isActive|yesno }}</p> {# 输出：状态：yes #}

{# 假设 isActive 为 false #}
<p>状态：{{ isActive|yesno }}</p> {# 输出：状态：no #}

{# 假设 isActive 为 nil 或未定义 #}
<p>状态：{{ nonExistentVar|yesno }}</p> {# 输出：状态：maybe #}

This filter is powerful because it allows us to customize the output text for these three states, not just the default 'yes', 'no', 'maybe'. We can customize these three values by adding comma-separated strings at the end of the filter: "真值对应的文本,假值对应的文本,空值对应的文本".

Smart useyesnoDisplay user membership status

Now, let's apply this filter to a real-world scenario: how to elegantly display a user's membership status, such as 'Member', 'Non-member', and 'Pending Review'.

We can map the user's status as follows:

• Member: Corresponds to logicaltrue.
• Non-member: Corresponds to logicalfalse.
• Pending revieworUnknown status: Corresponds to logicalnilorunknown.

Assuming in our AnQiCMS backend, user data (such as throughuserDetailthe tags you getuseran object) contains a field, such asuser.IsMemberApprovedThis field may be a boolean value indicating whether the user has passed the membership review, or it may not exist at all (i.e., `nil`) when the user has not submitted the review.