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How to determine whether the dream CMS Dede:field has value

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A price tag, structured as follows

Original Price:￥{dede:field.id function= "Addtablerow (@me, Li_tour,price_low)"/}

How to judge whether the price of the background reading has a value, there is a display value, no display temporarily no price

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A price tag, structured as follows

Original Price:￥{dede:field.id function= "Addtablerow (@me, Li_tour,price_low)"/}

How to judge whether the price of the background reading has a value, there is a display value, no display temporarily no price

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