無法插入ansible寄存器輸出的CSV

Question

這裏是我的代碼：

- name: Check last usage history 
    shell: | 
    mysql -N --host={{ host }} \ 
    --user={{ user }} \ 
    --password={{ pass }} \ 
    -D db \ 
    -e "SELECT LEFT(CreationTime,LOCATE(' ',CreationTime) - 1) from table;" 
    register: last_usage 
    when: products != "1" and products != "2" and products != "3" 

- name: Check last modified 
    shell: | 
    mysql -N --host={{ host }} \ 
    --user={{ user }} \ 
    --password={{ password }} \ 
    -D db \ 
    -e "SELECT LEFT(ModificationTime,LOCATE(' ',ModificationTime) - 1) FROM table2" 
    register: last_modi 
    when: products == "1 or products == "3" or products == "2" 

- name: insert data in csv 
    shell: | 
     echo "{{ name }}{{ last_usage.stdout }} {{ last_modi.stdout }}" >> /home/test/test.csv 

我想，如果任務被跳過打印在csv文件NULL輸出的變量。 現在，它顯示

One or more undefined variables: 'dict object' has no attribute 'stdout' 

Answer 1

- name: insert data in csv 
    shell: | 
     echo "{{ name }}{{ last_usage.stdout | default('NULL') }} {{ last_modi.stdout | default('NULL') }}" >> /home/test/test.csv