去掉Laravel Admin默认的id筛选条件

要去掉Laravel Admin默认的id筛选条件，可以在对应的Model中重写scopeQuery方法。具体步骤如下：

1. 打开对应的Model文件，找到scopeQuery方法；
2. 复制该方法的代码到Model中，并修改代码以去除id筛选条件。可以使用removeWhere方法来移除条件，如下所示：

/**
 * Get the original query builder used to retrieve the data.
 *
 * @param bool $excludeDeleted
 * @return \Illuminate\Database\Eloquent\Builder
 */
public function newQuery($excludeDeleted = true)
{
    $builder = $this->newQueryWithoutScopes();

    if ($excludeDeleted && $this->isSoftDeleting()) {
        $builder->whereNull($this->getQualifiedDeletedAtColumn());
    }

    return $builder;
}

/**
 * Get a new query builder with no relationships loaded.
 *
 * @return \Illuminate\Database\Eloquent\Builder
 */
public function newModelQuery()
{
    return $this->newQuery();
}

/**
 * Get a new query builder that doesn't have any global scopes.
 *
 * @return \Illuminate\Database\Eloquent\Builder|static
 */
public function newQueryWithoutScopes()
{
    return $this->applyScopes($this->newModelQuery());
}

/**
 * Apply all of the boot's globally registered scopes.
 *
 * @param \Illuminate\Database\Eloquent\Builder $builder
 * @return \Illuminate\Database\Eloquent\Builder
 */
protected function applyGlobalScopes($builder)
{
    foreach ($this->getGlobalScopes() as $identifier => $scope) {
        if (! $builder->hasNamedScope($identifier)) {
            $builder->withGlobalScope($identifier, $scope);
        }
    }

    return $builder;
}

/**
 * Apply the scopes to the Eloquent builder instance and return it.
 *
 * @param \Illuminate\Database\Eloquent\Builder $builder
 * @return \Illuminate\Database\Eloquent\Builder
 */
public function scopeWithAll($builder)
{
    return $builder->with($this->with)->select($this->table.'.*');
}

/**
 * Apply the scopes to the Eloquent builder instance and return it.
 *
 * @param \Illuminate\Database\Eloquent\Builder $builder
 * @return \Illuminate\Database\Eloquent\Builder
 */
public function scopeQuery($builder)
{
    $this->applyScopes($builder);

    return $builder->orderBy($this->getKeyName(), 'desc');
}

/**
 * Remove a where clause from the query.
 *
 * @param string|array $column
 * @param mixed $operator
 * @param mixed $value
 * @param string $boolean
 * @return $this
 */
public function removeWhere($column, $operator = null, $value = null, $boolean = 'and')
{
    if (is_array($column)) {
        foreach ($column as $clause) {
            $this->removeWhere(...array_values($clause));
        }
    } else {
        $wheres = $this->getQuery()->wheres;

        $this->getQuery()->wheres = collect($wheres)->reject(function ($where) use ($column, $operator, $value, $boolean) {
            if ($where['type'] !== 'Basic') {
                return false;
            }

            if ($where['boolean'] !== $boolean) {
                return false;
            }

            if ($where['column'] !== $column) {
                return false;
            }

            if (isset($operator) && $where['operator'] !== $operator) {
                return false;
            }

            if (isset($value) && $where['value'] !== $value) {
                return false;
            }

            return true;
        })->values()->all();
    }

    return $this;
}

3. 在scopeQuery方法中，使用removeWhere方法移除id筛选条件。默认情况下，id筛选条件是where('id', '>', 0)，可以使用以下代码来移除它：

public function scopeQuery($builder)
{
    $this->applyScopes($builder);

    $builder->removeWhere('id', '>', 0);

    return $builder->orderBy($this->getKeyName(), 'desc');
}

4. 保存文件，刷新Laravel Admin页面，即可看到id筛选条件已被移除。