Default function treating variable as a string.

[farrukh ahmed]

Hello Team,

Hope you all are doing well.

Here is  a case:

### Templates/php_app.conf.j2

;# MANAGED BLOCK ###

php_admin_flag[display_errors] = {{server_config.display_errors}}

php_admin_value[error_log] = {{ server_config.error_log | default({"error_log":"{{base_directory_path }}/{{app_name}}/logs/php-fpm_error.log"}) }}

php_admin_flag[log_errors] = {{server_config.log_errors}}

php_admin_flag[short_open_tag] = {{server_config.short_open_tag}}

php_admin_value[memory_limit] = {{server_config.memory_limit}}

php_admin_value[post_max_size] = {{server_config.post_max_size}}

php_admin_value[upload_max_filesize] = {{server_config.upload_max_filesize}}

php_admin_value[max_input_time] = {{server_config.max_input_time}}

php_admin_value[max_execution_time] = {{server_config.max_execution_time}}

php_admin_value[max_file_uploads] = {{server_config.max_file_uploads}}

php_admin_value[max_input_vars] = {{server_config.max_input_vars}}

php_admin_value[date.timezone] = {{server_config.time_zone}}

;# MANAGED BLOCK ###

####

### Tasks/main.yml

- name: Copy template of PHP configuration

template:

src: "../templates/php_app.conf.j2"

dest: "{{ php_app_configs_path }}/{{ app_name }}.conf"

backup: yes

#####

### Defaults/main/yml

php_app_configs_path: "/home/farrukh/php"

server_config: {

display_errors: "On",

error_log: "{{ base_directory_path }}/{{ app_name }}/logs/php-fpm_error.log",

log_errors: "On",

short_open_tag: "Off",

memory_limit: 128M,

post_max_size: 8M,

upload_max_filesize: 2M,

max_input_time: 60,

max_execution_time: 30,

max_file_uploads: 20,

max_input_vars: 1000,

time_zone: UTC

}

####

Here is the command I ran:

ansible-playbook php_config.yml -i hosts -e '{"app_name":"test-80php","base_directory_path":"/var/www/html/applications/test-80php","server_config":{"display_errors":"Off","log_errors":"On","memory_limit":"200M","post_max_size":"8M","upload_max_filesize":"8M","max_input_time":"60","max_execution_time":"30","max_file_uploads":"20","max_input_vars":"2000","short_open_tag":"On","time_zone":"Asia/Karachi"}}' -vvv

After Running the command, the template file output. It is treated as a string but not as a variable.
For instance, If I don't pass the variable "error_log" variable from CLI, its value should put the value in the template file as the variables defined, should be like i.e(php_admin_value[error_log] = /var/www/html/applications/test-80php/logs/php-fpm_error.log) in the template file

But it is treated as the string like the below code:

;# MANAGED BLOCK ###

php_admin_flag[display_errors] = Off

php_admin_value[error_log] = {'error_log': '{{base_directory_path }}/{{app_name}}/logs/php-fpm_error.log'}

php_admin_flag[log_errors] = On

php_admin_flag[short_open_tag] = Off

php_admin_value[memory_limit] = 200M

php_admin_value[post_max_size] = 8M

php_admin_value[upload_max_filesize] = 8M

php_admin_value[max_input_time] = 120

php_admin_value[max_execution_time] = 30

php_admin_value[max_file_uploads] = 60

php_admin_value[max_input_vars] = 2000

php_admin_value[date.timezone] = Asia/Islamabad

;# MANAGED BLOCK ###

Am I doing it the right way? Any help or solution will be appreciated

Thanks

Farrukh Ahmed.

[Rowe, Walter P. (Fed)]

You need one more "}" on your -e string to close out the server_config.

ansible-playbook php_config.yml -i hosts -e '{"app_name":"test-80php","base_directory_path":"/var/www/html/applications/test-80php","server_config":{ "display_errors":"Off", "log_errors":"On", "memory_limit":"200M", "post_max_size":"8M", "upload_max_filesize":"8M", "max_input_time":"60", "max_execution_time":"30", "max_file_uploads":"20", "max_input_vars":"2000", "short_open_tag":"On", "time_zone":"Asia/Karachi"} }}' -vvv

                   ------------------------------^

Walter
--
Walter Rowe, Division Chief
Infrastructure Services, OISM
Mobile: 202.355.4123

[Walter Rowe]

That clearly didn't display correctly ...

You need three close braces at the end of your "-e" extra vars param.

} }}' -vvv

Hope that helps.

[farrukh ahmed]

Here is the command previously used, I hope it is clearly visible.

ansible-playbook php_config.yml -i hosts -e '{"app_name":"test-80php",

"base_directory_path":"/var/www/html/applications/test-80php",

"server_config":{"display_errors":"Off",

"log_errors":"On",

"memory_limit":"200M",

"post_max_size":"8M",

"upload_max_filesize":"8M",

"max_input_time":"60",

"max_execution_time":"30",

"max_file_uploads":"20",

"max_input_vars":"2000",

"short_open_tag":"On",

"time_zone":"Asia/Karachi"}}' -vvv

Walter, I have tried adding more braces, but unfortunately, it didn't work for me.

The number of openings and closings braces is the same.

Regards,

Farrukh Ahmed

 

[Todd Lewis]

Mustaches do not nest. The "error_log" line in templates/php_app.conf.j2 should be

php_admin_value[error_log] = {{ server_config.error_log | default(base_directory_path ~ "/" ~ "app_name/logs/php-fpm_error.log") }}

[farrukh ahmed]

Thanks, Lewis for the solution. It actually worked. But would you mind explaining or sharing the documentation of what you have done above inside the "default()"?

I actually want to learn and understand this.

Thanks & regards,

Farrukh Ahmed