[bash script] single quotes and double quotes break origin line code

[yogithesymbian]

https://www.onlinegdb.com/online_bash_shell

bash code

            while read -p 'input relations model_name : ' line
            do
                yo_associate=("${yo_associate[@]}" $line)
            done

            for i in ${!yo_associate[@]}; do
              yo_associate_str+=("
                models.${MODEL_NAME}.belongsTo(models.${yo_associate[$i]}, {
                  foreignKey: '"${yo_associate[$i]}"_id',
                  constraint: false,
                });
              ")
            done
            
echo '
"
code lain out echo with single quotes //

'${yo_associate_str[@]}'

code lain //
"
'

# beutiful
echo "
code lain out echo with double quotes 

'${yo_associate_str[@]}'

code lain
"

output :

input relations model_name : user
input relations model_name : company
input relations model_name : 
"
code lain out echo with single quotes //

 models..belongsTo(models.user, { foreignKey: 'user_id', constraint: false, }); models..belongsTo(models.company, { foreignKey: 'company_id', constraint: false, }); 

code lain //
"


code lain out echo with double quotes 

'
                models..belongsTo(models.user, {
                  foreignKey: 'user_id',
                  constraint: false,
                });
               
                models..belongsTo(models.company, {
                  foreignKey: 'company_id',
                  constraint: false,
                });
              '

code lain



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